Trace

The nRF9160 supports ETM and ITM trace.

Available trace sinks:

2 kB internal embedded trace buffer (ETB)
External trace port interface through TPIU

Trace data from the ETM and the ITM can be sent to an internal embedded trace buffer (ETB) or an external debugger via a 4-bit wide parallel trace port (TPIU), see TRACEDATA[0] through TRACEDATA[3], and TRACECLK in Debug and trace overview.

The following diagram shows the trace components architecture of the device's embedded Arm® CoreSight™ subsystem.

The standard Arm® components are documented in Arm CoreSight SoC-400 Technical Reference Manual, revision r3p2. For details on how to use the trace capabilities, please read the debug documentation of your IDE.

TPIU's trace pins are multiplexed with GPIOs, see Pin assignments for more information.

Note: To configure the trace data delivery to the device trace port, use the MDK system start-up file included as of MDK version 8.26.0.

Trace speed is configured in the TRACEPORTSPEED (Retained) register. The speed of the trace pins depends on the DRIVE setting of the GPIOs that the trace pins are multiplexed with. See GPIO — General purpose input/output for information about how to set drive settings. Only S0S1 and H0H1 drives are suitable for debugging. S0S1 is the default DRIVE at reset. If parallel or serial trace port signals are not fast enough in the debugging conditions, all GPIOs in use for tracing should be set to high drive (H0H1). The user shall make sure that DRIVE setting for these GPIOs is not overwritten by software during the debugging session.

ATB Funnel

The ARM® ATB Funnel funnels trace bus mesages from several sources into one output bus.

This document only provides a register-level description of this ARM component. See the ARM® CoreSight™ SoC-400 Technical Reference Manual for more details

Registers

Instances


Instance	Base address	TrustZone			Split access	Description
Instance	Base address	Map	Att	DMA	Split access	Description
ATBFUNNEL1	0xE005A000	HF	NS	NA	No	ATBFUNNEL unit 1
ATBFUNNEL2	0xE005B000	HF	NS	NA	No	ATBFUNNEL unit 2

Register overview


Register	Offset	Description
CTRLREG	0x000	The IDFILTER0 register enables the programming of ID filtering for master port 0.
PRIORITYCTRLREG	0x004	The Priority_Ctrl_Reg register defines the order in which inputs are selected. Each 3-bit field is a priority for each particular slave interface.
ITATBDATA0	0xEEC	The ITATBDATA0 register performs different functions depending on whether the access is a read or a write.
ITATBCTR2	0xEF0	The ITATBCTR2 register performs different functions depending on whether the access is a read or a write.
ITATBCTR1	0xEF4	The ITATBCTR1 register performs different functions depending on whether the access is a read or a write.
ITATBCTR0	0xEF8	The ITATBCTR0 register performs different functions depending on whether the access is a read or a write.
ITCTRL	0xF00	The ITCTRL register enables the component to switch from a functional mode, which is the default behavior, to integration mode where the inputs and outputs of the component can be directly controlled for the purposes of integration testing and topology detection.
CLAIMSET	0xFA0	Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMSET register sets bits in the claim tag, and determines the number of claim bits implemented.
CLAIMCLR	0xFA4	Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMCLR register sets the bits in the claim tag to 0 and determines the current value of the claim tag.
LAR	0xFB0	This is used to enable write access to device registers.
LSR	0xFB4	This indicates the status of the lock control mechanism. This lock prevents accidental writes by code under debug. Accesses to the extended stimulus port registers are not affected by the lock mechanism. This register must always be present although there might not be any lock access control mechanism. The lock mechanism, where present and locked, must block write accesses to any control register, except the Lock Access Register. For most components this covers all registers except for the Lock Access Register.
AUTHSTATUS	0xFB8	Indicates the current level of tracing permitted by the system
DEVID	0xFC8	Indicates the capabilities of the component.
DEVTYPE	0xFCC	The DEVTYPE register provides a debugger with information about the component when the Part Number field is not recognized. The debugger can then report this information.
PIDR4	0xFD0	Coresight peripheral identification registers.
PIDR[0]	0xFE0	Coresight peripheral identification registers.
PIDR[1]	0xFE4	Coresight peripheral identification registers.
PIDR[2]	0xFE8	Coresight peripheral identification registers.
PIDR[3]	0xFEC	Coresight peripheral identification registers.
CIDR[0]	0xFF0	Coresight component identification registers.
CIDR[1]	0xFF4	Coresight component identification registers.
CIDR[2]	0xFF8	Coresight component identification registers.
CIDR[3]	0xFFC	Coresight component identification registers.

CTRLREG

Address offset: 0x000

The IDFILTER0 register enables the programming of ID filtering for master port 0.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																								I	I	I	I	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	ENS[i] (i=0..7)										Enable slave port i.
			Disabled	0								Slave port disabled. This excludes the port from the priority selection scheme.
			Enabled	1								Slave port enabled.
I	RW	HT		[0:14]								Hold Time. The formatting scheme can become inefficient when fast switching occurs, and you can use this setting to minimize switching. When a source has nothing to transmit, then another source is selected irrespective of the minimum number of transactions. The ATB funnel holds for the minimum hold time and one additional transaction. The actual hold time is the register value plus 1. The maximum value that can be entered is 0b1110 and this equates to 15 transactions. 0b1111 is reserved.

PRIORITYCTRLREG

Address offset: 0x004

The Priority_Ctrl_Reg register defines the order in which inputs are selected. Each 3-bit field is a priority for each particular slave interface.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID												H	H	H	G	G	G	F	F	F	E	E	E	D	D	D	C	C	C	B	B	B	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	PRIPORT[i] (i=0..7)		[0:7]								Priority value of port number i.

ITATBDATA0

Address offset: 0xEEC

The ITATBDATA0 register performs different functions depending on whether the access is a read or a write.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																			Q	P	O	N	M	L	K	J	I	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-Q	RW	ATDATA[i] (i=0..16)										A read access returns the value of a pin on atdatas_x of the enabled port. A write access writes to the corresponding atdatam pin of the enabled port.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITATBCTR2

Address offset: 0xEF0

The ITATBCTR2 register performs different functions depending on whether the access is a read or a write.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATREADY										A read access returns the value of atreadym. A write access outputs the data to afvalids[n], where the value of the CTRLREG at 0x000 defines n.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
B	RW	AFVALID										A read access returns the value of afvalidm. A write access outputs the data to atreadys[n], where the value of the CTRLREG at 0x000 defines n.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITATBCTR1

Address offset: 0xEF4

The ITATBCTR1 register performs different functions depending on whether the access is a read or a write.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																													A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATVALIDM0										A read returns the value of the atids[n] signals, where the value of the Control Register at 0x000 defines n. A write outputs the value to the atidm port.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITATBCTR0

Address offset: 0xEF8

The ITATBCTR0 register performs different functions depending on whether the access is a read or a write.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																										C	C						B		A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATVALID										A read returns the value of the atvalids[n] signal, where the value of the CTRLREG at 0x000 defines n. A write outputs the value to atvalidm.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
B	RW	AFREADY										A read returns the value of the afreadys[n] signal, where the value of the Ctrl_Reg at 0x000 defines n. A write outputs the value to afreadym.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
C	RW	ATBYTES										A read returns the value of the atbytess[n] signal, where the value of the Ctrl_Reg at 0x000 defines n. A write outputs the value to atbytesm.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITCTRL

Address offset: 0xF00

The ITCTRL register enables the component to switch from a functional mode, which is the default behavior, to integration mode where the inputs and outputs of the component can be directly controlled for the purposes of integration testing and topology detection.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																			A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	IME										Integration Mode Enable.
			Disabled	0								Integration mode disabled.
			Enabled	1								Integration mode enabled.

CLAIMSET

Address offset: 0xFA0

Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMSET register sets bits in the claim tag, and determines the number of claim bits implemented.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	BIT[i] (i=0..3)										Set claim bit i and check if bit is implemented or not.
			NotImplemented	0								Claim bit i is not implemented.
			Implemented	1								Claim bit i is implemented.
			Set	1								Set claim bit i.

CLAIMCLR

Address offset: 0xFA4

Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMCLR register sets the bits in the claim tag to 0 and determines the current value of the claim tag.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	BIT[i] (i=0..3)										Read or clear claim bit i.
			Cleared	0								Claim bit i is not set.
			Set	1								Claim bit i is set.
			Clear	1								Clear claim bit i.

LAR

Address offset: 0xFB0

This is used to enable write access to device registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ACCESS										A write of 0xC5ACCE55 enables further write access to this device. Any other write removes write access.
			UnLock	0xC5ACCE55								Unlock register interface.

LSR

Address offset: 0xFB4

This indicates the status of the lock control mechanism. This lock prevents accidental writes by code under debug. Accesses to the extended stimulus port registers are not affected by the lock mechanism. This register must always be present although there might not be any lock access control mechanism. The lock mechanism, where present and locked, must block write accesses to any control register, except the Lock Access Register. For most components this covers all registers except for the Lock Access Register.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PRESENT										Indicates that a lock control mechanism exists for this device.
			NotImplemented	0								No lock control mechanism exists, writes to the Lock Access Register are ignored.
			Implemented	1								Lock control mechanism is present.
B	RW	LOCKED										Returns the current status of the Lock.
			UnLocked	0								Write access is allowed to this device.
			Locked	1								Write access to the component is blocked. All writes to control registers are ignored. Reads are permitted.
C	RW	TYPE										Indicates if the Lock Access Register is implemented as 8-bit or 32-bit.
			Bits32	0								This component implements a 32-bit Lock Access Register.
			Bits8	1								This component implements an 8-bit Lock Access Register.

AUTHSTATUS

Address offset: 0xFB8

Indicates the current level of tracing permitted by the system


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												D	D	C	C	B	B	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	NSID										Non-secure Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
B	RW	NSNID										Non-secure Non-Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
C	RW	SID										Secure Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
D	RW	SNID										Secure Non-Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.

DEVID

Address offset: 0xFC8

Indicates the capabilities of the component.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	PORTCOUNT		[2:8]								Indicates the number of input ports connected. 0x0 and 0x1 are illegal values.

DEVTYPE

Address offset: 0xFCC

The DEVTYPE register provides a debugger with information about the component when the Part Number field is not recognized. The debugger can then report this information.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	MAJOR										The main type of the component
			InputOutputDevice	2								Indicates that this component has ATB inputs and outputs.
B	R	SUB										The sub-type of the component
			Replicator	1								This component arbitrates ATB inputs mapping to ATB outputs.

PIDR4

Address offset: 0xFD0

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[0]

Address offset: 0xFE0

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[1]

Address offset: 0xFE4

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[2]

Address offset: 0xFE8

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[3]

Address offset: 0xFEC

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[0]

Address offset: 0xFF0

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[1]

Address offset: 0xFF4

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[2]

Address offset: 0xFF8

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[3]

Address offset: 0xFFC

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

ATB Replicator

The ARM® ATB Replicator replicates incoming trace bus mesages across its outputs.

This document only provides a register-level description of this ARM component. See the ARM® CoreSight™ SoC-400 Technical Reference Manual for more details

Registers

Instances


Instance	Base address	TrustZone			Split access	Description
Instance	Base address	Map	Att	DMA	Split access	Description
ATBREPLICATOR	0xE0058000	HF	NS	NA	No	ATBREPLICATOR

Register overview


Register	Offset	Description
IDFILTER0	0x000	The IDFILTER0 register enables the programming of ID filtering for master port 0.
IDFILTER1	0x004	The IDFILTER1 register enables the programming of ID filtering for master port 1.
ITATBCTR1	0xEF8	The ITATBCTR1 register returns the value of the atreadym0, atreadym1, and atvalids inputs in integration mode.
ITATBCTR0	0xEFC	The ITATBCTR0 register controls the value of the atvalidm0, atvalidm1, and atreadys outputs in integration mode.
ITCTRL	0xF00	The ITCTRL register enables the component to switch from a functional mode, which is the default behavior, to integration mode where the inputs and outputs of the component can be directly controlled for the purposes of integration testing and topology detection.
CLAIMSET	0xFA0	Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMSET register sets bits in the claim tag, and determines the number of claim bits implemented.
CLAIMCLR	0xFA4	Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMCLR register sets the bits in the claim tag to 0 and determines the current value of the claim tag.
LAR	0xFB0	This is used to enable write access to device registers.
LSR	0xFB4	This indicates the status of the lock control mechanism. This lock prevents accidental writes by code under debug. Accesses to the extended stimulus port registers are not affected by the lock mechanism. This register must always be present although there might not be any lock access control mechanism. The lock mechanism, where present and locked, must block write accesses to any control register, except the Lock Access Register. For most components this covers all registers except for the Lock Access Register.
AUTHSTATUS	0xFB8	Indicates the current level of tracing permitted by the system
DEVID	0xFC8	Indicates the capabilities of the component.
DEVTYPE	0xFCC	The DEVTYPE register provides a debugger with information about the component when the Part Number field is not recognized. The debugger can then report this information.
PIDR4	0xFD0	Coresight peripheral identification registers.
PIDR[0]	0xFE0	Coresight peripheral identification registers.
PIDR[1]	0xFE4	Coresight peripheral identification registers.
PIDR[2]	0xFE8	Coresight peripheral identification registers.
PIDR[3]	0xFEC	Coresight peripheral identification registers.
CIDR[0]	0xFF0	Coresight component identification registers.
CIDR[1]	0xFF4	Coresight component identification registers.
CIDR[2]	0xFF8	Coresight component identification registers.
CIDR[3]	0xFFC	Coresight component identification registers.

IDFILTER0

Address offset: 0x000

The IDFILTER0 register enables the programming of ID filtering for master port 0.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	ID0_[i]0_[i]F (i=0..7)										Enable or disable ID filtering for IDs 0xi0_0xiF.
			NotFiltered	0								Transactions with these IDs are passed on to ATB master port 0.
			Selected	1								Transactions with these IDs are discarded by the replicator.

IDFILTER1

Address offset: 0x004

The IDFILTER1 register enables the programming of ID filtering for master port 1.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	ID1_[i]0_[i]F (i=0..7)										Enable or disable ID filtering for IDs 0xi0_0xiF.
			NotFiltered	0								Transactions with these IDs are passed on to ATB master port 1.
			Selected	1								Transactions with these IDs are discarded by the replicator.

ITATBCTR1

Address offset: 0xEF8

The ITATBCTR1 register returns the value of the atreadym0, atreadym1, and atvalids inputs in integration mode.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																C		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATREADYM0										Reads the value of the atreadym0 input.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
B	RW	ATREADYM1										Reads the value of the atreadym1 input.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
C	RW	ATVALIDS										Reads the value of the atvalids input.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITATBCTR0

Address offset: 0xEFC

The ITATBCTR0 register controls the value of the atvalidm0, atvalidm1, and atreadys outputs in integration mode.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																C	B		A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATVALIDM0										Sets the value of the atvalidm0 output.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
B	RW	ATVALIDM1										Sets the value of the atvalidm1 output.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
C	RW	ATREADYS										Sets the value of the atreadys output.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITCTRL

Address offset: 0xF00


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																			A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	IME										Integration Mode Enable.
			Disabled	0								Integration mode disabled.
			Enabled	1								Integration mode enabled.

CLAIMSET

Address offset: 0xFA0


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	BIT[i] (i=0..3)										Set claim bit i and check if bit is implemented or not.
			NotImplemented	0								Claim bit i is not implemented.
			Implemented	1								Claim bit i is implemented.
			Set	1								Set claim bit i.

CLAIMCLR

Address offset: 0xFA4

Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMCLR register sets the bits in the claim tag to 0 and determines the current value of the claim tag.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	BIT[i] (i=0..3)										Read or clear claim bit i.
			Cleared	0								Claim bit i is not set.
			Set	1								Claim bit i is set.
			Clear	1								Clear claim bit i.

LAR

Address offset: 0xFB0

This is used to enable write access to device registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ACCESS										A write of 0xC5ACCE55 enables further write access to this device. Any other write removes write access.
			UnLock	0xC5ACCE55								Unlock register interface.

LSR

Address offset: 0xFB4


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PRESENT										Indicates that a lock control mechanism exists for this device.
			NotImplemented	0								No lock control mechanism exists, writes to the Lock Access Register are ignored.
			Implemented	1								Lock control mechanism is present.
B	RW	LOCKED										Returns the current status of the Lock.
			UnLocked	0								Write access is allowed to this device.
			Locked	1								Write access to the component is blocked. All writes to control registers are ignored. Reads are permitted.
C	RW	TYPE										Indicates if the Lock Access Register is implemented as 8-bit or 32-bit.
			Bits32	0								This component implements a 32-bit Lock Access Register.
			Bits8	1								This component implements an 8-bit Lock Access Register.

AUTHSTATUS

Address offset: 0xFB8

Indicates the current level of tracing permitted by the system


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												D	D	C	C	B	B	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	NSID										Non-secure Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
B	RW	NSNID										Non-secure Non-Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
C	RW	SID										Secure Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
D	RW	SNID										Secure Non-Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.

DEVID

Address offset: 0xFC8

Indicates the capabilities of the component.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	PORTNUM		[0:15]								Indicates the number of master ports implemented.

DEVTYPE

Address offset: 0xFCC

The DEVTYPE register provides a debugger with information about the component when the Part Number field is not recognized. The debugger can then report this information.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	MAJOR										The main type of the component
			InputOutputDevice	2								Indicates that this component has ATB inputs and outputs.
B	R	SUB										The sub-type of the component
			Replicator	2								Indicates that this component replicates trace from a single source to multiple targets.

PIDR4

Address offset: 0xFD0

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[0]

Address offset: 0xFE0

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[1]

Address offset: 0xFE4

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[2]

Address offset: 0xFE8

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[3]

Address offset: 0xFEC

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[0]

Address offset: 0xFF0

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[1]

Address offset: 0xFF4

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[2]

Address offset: 0xFF8

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[3]

Address offset: 0xFFC

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

ETB — Embedded trace buffer

The ARM embedded trace buffer captures trace and stores it in an on-chip RAM for later inspection.

This document only provides a register-level description of this ARM component. See the Arm® CoreSight SoC-400 Technical Reference Manual for more details.

Registers

Instances


Instance	Base address	TrustZone			Split access	Description
Instance	Base address	Map	Att	DMA	Split access	Description
ETB	0xE0051000	HF	NS	NA	No	ETB

Register overview


Register	Offset	Description
RDP	0x4	ETB RAM Depth Register
STS	0xC	ETB Status Register
RRD	0x10	ETB RAM Read Data Register
RRP	0x14	ETB RAM Read Pointer Register
RWP	0x18	ETB RAM Write Pointer Register
TRG	0x1C	ETB Trigger Counter Register
CTL	0x20	ETB Control Register
RWD	0x24	ETB RAM Write Data Register
FFSR	0x300	ETB Formatter and Flush Status Register
FFCR	0x304	ETB Formatter and Flush Control Register
ITMISCOP0	0xEE0	Integration Test Miscellaneous Output Register 0
ITTRFLINACK	0xEE4	Integration Test Trigger In and Flush In Acknowledge Register
ITTRFLIN	0xEE8	Integration Test Trigger In and Flush In Register
ITATBDATA0	0xEEC	Integration Test ATB Data Register 0
ITATBCTR2	0xEF0	Integration Test ATB Control Register 2
ITATBCTR1	0xEF4	Integration Test ATB Control Register 1
ITATBCTR0	0xEF8	Integration Test ATB Control Register 0
ITCTRL	0xF00	Integration Mode Control Register
CLAIMSET	0xFA0	Claim Tag Set Register
CLAIMCLR	0xFA4	Claim Tag Clear Register
LAR	0xFB0	Lock Access Register
LSR	0xFB4	Lock Status Register
AUTHSTATUS	0xFB8	Authentication Status Register
DEVID	0xFC8	Device Configuration Register
DEVTYPE	0xFCC	Device Type Identifier Register
PERIPHID4	0xFD0	Peripheral ID4 Register
PERIPHID0	0xFE0	Peripheral ID0 Register
PERIPHID1	0xFE4	Peripheral ID1 Register
PERIPHID2	0xFE8	Peripheral ID2 Register
PERIPHID3	0xFEC	Peripheral ID3 Register
COMPID0	0xFF0	Component ID0 Register
COMPID1	0xFF4	Component ID1 Register
COMPID2	0xFF8	Component ID2 Register
COMPID3	0xFFC	Component ID3 Register

RDP

Address offset: 0x4

ETB RAM Depth Register

Defines the depth, in words, of the trace RAM. This value is configurable in the RTL, but fixed at synthesis. Supported depth in powers of 2 only.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	ETB_RAM_DEPTH										Defines the depth, in words, of the trace RAM.

STS

Address offset: 0xC

ETB Status Register

This register indicates the status of the ETB.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000008				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	FULL										RAM Full. The flag indicates when the RAM write pointer has wrapped around.
B	R	TRIGGERED										The Triggered bit is set when a trigger has been observed. This does not indicate that a trigger has been embedded in the trace data by the formatter, but is determined by the programming of the Formatter and Flush Control Register.
C	R	ACQCOMP										The acquisition complete flag indicates that capture has been completed when the formatter stops because of any of the methods defined in the Formatter and Flush Control Register, or TraceCaptEn = 0. This also results in FtStopped in the Formatter and Flush Status Register going HIGH.
D	R	FTEMPTY										Formatter pipeline empty. All data stored to RAM.

RRD

Address offset: 0x10

ETB RAM Read Data Register

When trace capture is disabled, the contents of the ETB Trace RAM at the location addressed by the RAM Read Pointer Registers are placed in this register. Reading this register increments the RAM Read Pointer Register and triggers a RAM access cycle. If trace capture is enabled (FtStopped=0, TraceCaptEn=1), and ETB RAM reading is attempted, a read from this register outputs 0xFFFFFFFF and the RAM Read Pointer Register does not auto-increment. A constant stream of 1s being output corresponds to a synchronization output in the formatter protocol, which is not applicable to the ETB, and so can be used to signify a read error, when formatting is enabled.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	RAM_READ_DATA										Data read from the ETB Trace RAM.

RRP

Address offset: 0x14

ETB RAM Read Pointer Register

The RAM Read Pointer Register sets the read pointer used to read entries from the Trace RAM over the APB interface. When this register is written to, a RAM access is initiated. The RAM Read Data Register is then updated. The register can also be read to determine the current memory location being referenced. This register must not be written to when trace capture is enabled (FtStopped=0, TraceCaptEn=1). If access is attempted, the register is not updated.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																										A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	RAM_READ_POINTER										Sets the read pointer used to read entries from the Trace RAM over the APB interface.

RWP

Address offset: 0x18

ETB RAM Write Pointer Register

The RAM Write Pointer Register sets the write pointer used to write entries from the CoreSight bus into Trace RAM. During trace capture the pointer increments when the DataValid flag is asserted by the Formatter. When this register increments from its maximum value back to zero, the Full flag is set. This register can also be written to over APB to set the pointer for write accesses carried out through the APB interface. This register must not be written to when trace capture is enabled (FtStopped=0, TraceCaptEn=1). If access is attempted, the register is not updated. The register can also be read to determine the current memory location being referenced. It is recommended that addresses are 128-bit aligned when the formatter is used in normal or continuous modes.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																										A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	RAM_WRITE_POINTER										Sets the write pointer used to write entries from the CoreSight bus into the Trace RAM.

TRG

Address offset: 0x1C

ETB Trigger Counter Register

The Trigger Counter Register disables write access to the Trace RAM by stopping the Formatter after a defined number of words have been stored following the trigger event. The number of 32-bit words written into the Trace RAM following the trigger event is equal to the value stored in this register+1.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																										A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	TRIGGER_COUNTER										The counter is used as follows:Trace after - The counter is set to a large value, slightly less than the number of entries in the RAM. Trace before - The counter is set to a small value. Trace about - The counter is set to half the depth of the Trace RAM. This register must not be written to when trace capture is enabled (FtStopped=0, TraceCaptEn=1). If a write is attempted, the register is not updated. A read access is permitted with trace capture enabled.

CTL

Address offset: 0x20

ETB Control Register

This register controls trace capture by the ETB.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																			A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	TRACECAPTEN										ETB Trace Capture Enable. This is the master enable bit forcing FtStopped HIGH when TraceCaptEn is LOW. When capture is disabled, any remaining data in the ATB formatter is stored to RAM. When all data is stored the formatter outputs FtStopped. Capture is fully disabled, or complete, when FtStopped goes HIGH. See ETB Formatter and Flush Status Register, FFSR, 0x300.

RWD

Address offset: 0x24

ETB RAM Write Data Register

Data written to the ETB Trace RAM.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	RAM_WRITE_DATA										Data written to the ETB Trace RAM. When trace capture is disabled, the contents of this register are placed into the ETB Trace RAM when this register is written to. Writing to this register increments the RAM Write Pointer Register. If trace capture is enabled, and this register is accessed, then a read from this register outputs 0xFFFFFFFF. Reads of this register never increment the RAM Write Pointer Register. A constant stream of 1s being output corresponds to a synchronization output from the ETB. If a write access is attempted, the data is not written into Trace RAM.

FFSR

Address offset: 0x300

ETB Formatter and Flush Status Register

This register indicates the implemented Trigger Counter multipliers and other supported features of the trigger system.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000002				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0
ID	R/W	Field	Value ID	Value								Description
A	R	FLINPROG										Flush In Progress. This is an indication of the current state of afvalids.
B	R	FTSTOPPED										Formatter stopped. The formatter has received a stop request signal and all trace data and post-amble has been output. Any more trace data on the ATB interface is ignored and atreadys goes HIGH.

FFCR

Address offset: 0x304

ETB Formatter and Flush Control Register

This register controls the generation of stop, trigger, and flush events. To disable formatting and put the formatter into bypass mode, bits 1 and 0 must be clear. If both bits are set, then the formatter inserts triggers into the formatted stream. All three flush generating conditions can be enabled together. However, if a second or third flush event is generated then the current flush completes before the next flush is serviced. Flush from flushin takes priority over flush from Trigger, which in turn completes before a manually activated flush. All Trigger indication conditions can be enabled simultaneously although this can cause the appearance of multiple triggers if flush using trigger is also enabled. Both 'Stop On' settings can be enabled, although if flush on trigger, FOnTrig, is set up then none of the flushed data is stored. When the system stops, it returns ATREADY and does not store the accepted data packets. This is to avoid stalling of any other connected devices using a Trace Replicator. If an event in the Formatter and Flush Control Register is required, it must be enabled before the originating event starts. Because requests from flushes and triggers can originate in an asynchronous clock domain, the exact time the component acts on the request cannot be determined with respect to configuring the control. Note - To perform a stop on flush completion through a manually-generated flush request, two write operations to the register are required: one to enable the stop event, if it is not already enabled; one to generate the manual flush.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																						J	I		H	G	F		E	D	C			B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ENFTC										Do not embed Triggers into the formatted stream. Trace disable cycles and triggers are indicated by TRACECTL, where fitted. Can only be changed when FtStopped is HIGH. This bit is clear on reset.
B	RW	ENFCONT										Continuous mode in the ETB corresponds to normal mode with the embedding of triggers. Can only be changed when FtStopped is HIGH. This bit is clear on reset.
C	RW	FONFLIN										Set this bit to enable use of the flushin connection. This is clear on reset.
D	RW	FONTRIG										Generate flush using Trigger event. Set this bit to cause a flush of data in the system when a Trigger Event occurs. This bit is clear on reset. A Trigger Event is defined as when the Trigger counter reaches zero (where fitted) or, in the case of the trigger counter being zero (or not fitted), when trigin is HIGH.
E	RW	FONMAN										Setting this bit causes a flush to be generated. This is cleared when this flush has been serviced. This bit is clear on reset.
F	RW	TRIGIN										Indicate a trigger on trigin being asserted.
G	RW	TRIGEVT										Indicate a trigger on a Trigger Event.
H	RW	TRIGFL										Indicates a trigger on Flush completion (afreadys being returned).
I	RW	STOPFL										This forces the FIFO to drain off any part-completed packets. Setting this bit enables this function but this is clear on reset (disabled).
J	RW	STOPTRIG										Stop the formatter after a Trigger Event is observed. Reset to disabled (zero).

ITMISCOP0

Address offset: 0xEE0

Integration Test Miscellaneous Output Register 0

The Integration Test Miscellaneous Output Register 0 controls the values of some outputs from the ETB.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	W	ACQCOMP										Set the value of acqcomp.
B	W	FULL										Set the value of full output port.

ITTRFLINACK

Address offset: 0xEE4

Integration Test Trigger In and Flush In Acknowledge Register

The Integration Test Trigger In and Flush In Acknowledge Register enables control of the triginack and flushinack outputs from the ETB.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	W	TRIGINACK										Set the value of triginack.
B	W	FLUSHINACK										Set the value of flushinack.

ITTRFLIN

Address offset: 0xEE8

Integration Test Trigger In and Flush In Register

The Integration Test Trigger In and Flush In Register contains the values of the flushin and trigin inputs to the ETB.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	TRIGIN										Read the value of trigin.
B	R	FLUSHIN										Read the value of flushin.

ITATBDATA0

Address offset: 0xEEC

Integration Test ATB Data Register 0

The Integration Test ATB Data Register 0 contains the value of the atdatas inputs to the ETB. The values are only valid when atvalids is HIGH.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																															E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	ATDATA_0										Read the value of atdatas[0].
B	R	ATDATA_7										Read the value of atdatas[7].
C	R	ATDATA_15										Read the value of atdatas[15].
D	R	ATDATA_23										Read the value of atdatas[23].
E	R	ATDATA_31										Read the value of atdatas[31].

ITATBCTR2

Address offset: 0xEF0

Integration Test ATB Control Register 2

The Integration Test ATB Control Register 2 enables control of the atreadys and afvalids outputs of the ETB.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	W	ATREADYS										Set the value of atreadys.
B	W	AFVALIDS										Set the value of afvalids.

ITATBCTR1

Address offset: 0xEF4

Integration Test ATB Control Register 1

The Integration Test ATB Control Register 1 contains the value of the atids input to the ETB. This is only valid when atvalids is HIGH.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																													A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	ATID										Read the value of atids.

ITATBCTR0

Address offset: 0xEF8

Integration Test ATB Control Register 0

The Integration Test ATB Control Register 0 captures the values of the atvalids, afreadys, and atbytess inputs to the ETB. To ensure the integration registers work correctly in a system, the value of atbytess is only valid when atvalids, bit [0], is HIGH.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																										C	C							B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	ATVALID										Read the value of atvalids.
B	R	AFREADY										Read the value of afreadys.
C	R	ATBYTES										Read the value of atbytess.

ITCTRL

Address offset: 0xF00

Integration Mode Control Register

This register is used to enable topology detection. For more information see the CoreSight Architecture Specification. This register enables the component to switch from a functional mode, the default behavior, to integration mode where the inputs and outputs of the component can be directly controlled for the purpose of integration testing and topology solving. Note: When a device has been in integration mode, it might not function with the original behavior. After performing integration or topology detection, you must reset the system to ensure correct behavior of CoreSight and other connected system components that are affected by the integration or topology detection.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																			A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	INTEGRATION_MODE										Allows the component to switch from functional mode to integration mode or back.

CLAIMSET

Address offset: 0xFA0

Claim Tag Set Register

This is used in conjunction with Claim Tag Clear Register, CLAIMCLR. This register forms one half of the Claim Tag value. This location allows individual bits to be set, write, and returns the number of bits that can be set, read.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																A	A	A	A
Reset 0x0000000F				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1
ID	R/W	Field	Value ID	Value								Description
A	RW	CLAIMSET										This claim tag bit is implemented

CLAIMCLR

Address offset: 0xFA4

Claim Tag Clear Register

This register is used in conjunction with Claim Tag Set Register, CLAIMSET. This register forms one half of the Claim Tag value. This location enables individual bits to be cleared, write, and returns the current Claim Tag value, read.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	CLAIMCLR										The value present reflects the current setting of the Claim Tag.

LAR

Address offset: 0xFB0

Lock Access Register

This is used to enable write access to device registers. External accesses from a debugger (paddrdbg31 = 1) are not subject to the Lock Registers. A debugger does not have to unlock the component in order to write and modify the registers in the component.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	W	ACCESS_W										A write of 0xC5ACCE55 enables further write access to this device. A write of any value other than 0xC5ACCE55 will have the affect of removing write access.

LSR

Address offset: 0xFB4

Lock Status Register

This indicates the status of the Lock control mechanism. This lock prevents accidental writes by code under debug. When locked, write access is blocked to all registers, except the Lock Access Register. External accesses from a debugger (paddrdbg31 = 1) are not subject to the Lock Registers. This register reads as 0 when read from an external debugger (paddrdbg31 = 1).


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																	C	B	A
Reset 0x00000003				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1
ID	R/W	Field	Value ID	Value								Description
A	R	LOCKEXIST										Indicates that a lock control mechanism exists for this device. This bit reads as 0 when read from an external debugger (paddrdbg31 = 1) since external debugger accesses are not subject to Lock Registers.
B	R	LOCKGRANT										Returns the current status of the Lock. This bit reads as 0 when read from an external debugger (paddrdbg31 = 1) since external debugger accesses are not subject to Lock Registers.
C	R	LOCKTYPE										Indicates if the Lock Access Register (0xFB0) is implemented as 8-bit or 32-bit

AUTHSTATUS

Address offset: 0xFB8

Authentication Status Register

Reports what functionality is currently permitted by the authentication interface.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												D	D	C	C	B	B	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	NSID										Indicates the security level for non-secure invasive debug
B	R	NSNID										Indicates the security level for non-secure non-invasive debug
C	R	SID										Indicates the security level for secure invasive debug
D	R	SNID										Indicates the security level for secure non-invasive debug

DEVID

Address offset: 0xFC8

Device Configuration Register

This register indicates the capabilities of the ETB.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																														B	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	EXTMUXNUM										When non-zero this value indicates the type/number of ATB multiplexing present on the input to the ATB.
B	R	RAMCLK										This bit returns 0 on reads indicating that the ETB RAM operates synchronously to atclk.

DEVTYPE

Address offset: 0xFCC

Device Type Identifier Register

It provides a debugger with information about the component when the Part Number field is not recognized. The debugger can then report this information.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x00000021				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	MAJOR_TYPE										Major classification grouping for this debug/trace component
B	R	SUB_TYPE										Sub-classification within the major category

PERIPHID4

Address offset: 0xFD0

Peripheral ID4 Register

Part of the set of Peripheral Identification registers. Contains part of the designer identity and the memory footprint indicator.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x00000004				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	DES_2										JEDEC continuation code indicating the designer of the component (along with the identity code)
B	R	SIZE										This is a 4-bit value that indicates the total contiguous size of the memory window used by this component in powers of 2 from the standard 4KB. If a component only requires the standard 4KB then this should read as 0x0, 4KB only, for 8KB set to 0x1, 16KB == 0x2, 32KB == 0x3, and so on.

PERIPHID0

Address offset: 0xFE0

Peripheral ID0 Register

Part of the set of Peripheral Identification registers. Contains part of the designer specific part number.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x00000007				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1
ID	R/W	Field	Value ID	Value								Description
A	R	PART_0										Bits [7:0] of the component's part number. This is selected by the designer of the component.

PERIPHID1

Address offset: 0xFE4

Peripheral ID1 Register

Part of the set of Peripheral Identification registers. Contains part of the designer specific part number and part of the designer identity.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x000000B9				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	1	1	0	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PART_1										Bits [11:8] of the component's part number. This is selected by the designer of the component.
B	R	DES_0										Bits 3:0 of the JEDEC identity code indicating the designer of the component (along with the continuation code)

PERIPHID2

Address offset: 0xFE8

Peripheral ID2 Register

Part of the set of Peripheral Identification registers. Contains part of the designer identity and the product revision.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												C	C	C	C	B	A	A	A
Reset 0x0000004B				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	1	0	1	1
ID	R/W	Field	Value ID	Value								Description
A	R	DES_1										Bits 6:4 of the JEDEC identity code indicating the designer of the component (along with the continuation code)
B	R	JEDEC										Always set. Indicates that a JEDEC assigned value is used
C	R	REVISION										The Revision field is an incremental value starting at 0x0 for the first design of this component. This only increases by 1 for both major and minor revisions and is simply used as a look-up to establish the exact major/minor revision.

PERIPHID3

Address offset: 0xFEC

Peripheral ID3 Register

Part of the set of Peripheral Identification registers. Contains the RevAnd and Customer Modified fields.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	CMOD										Where the component is reusable IP, this value indicates if the customer has modified the behavior of the component. In most cases this field is zero.
B	R	REVAND										This field indicates minor errata fixes specific to this design, for example metal fixes after implementation. In most cases this field is zero. It is recommended that component designers ensure this field can be changed by a metal fix if required, for example by driving it from registers that reset to zero.

COMPID0

Address offset: 0xFF0

Component ID0 Register

A component identification register, that indicates that the identification registers are present.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x0000000D				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PRMBL_0										Contains bits [7:0] of the component identification

COMPID1

Address offset: 0xFF4

Component ID1 Register

A component identification register, that indicates that the identification registers are present. This register also indicates the component class.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x00000090				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	1	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	PRMBL_1										Contains bits [11:8] of the component identification
B	R	CLASS										Class of the component. E. g. ROM table, CoreSight component etc. Constitutes bits [15:12] of the component identification.

COMPID2

Address offset: 0xFF8

Component ID2 Register

A component identification register, that indicates that the identification registers are present.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x00000005				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PRMBL_2										Contains bits [23:16] of the component identification

COMPID3

Address offset: 0xFFC

Component ID3 Register

A component identification register, that indicates that the identification registers are present.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x000000B1				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1	1	0	0	0	1
ID	R/W	Field	Value ID	Value								Description
A	R	PRMBL_3										Contains bits [31:24] of the component identification

ETM — Embedded trace macrocell

The ARM embedded trace macorcell implements instruction, data and event tracing.

This document only provides a register-level description of this ARM component. See the Arm® Embedded Trace Macrocell Architecture Specification for more details

Registers

Instances


Instance	Base address	TrustZone			Split access	Description
Instance	Base address	Map	Att	DMA	Split access	Description
ETM	0xE0041000	HF	NS	NA	No	ETM

Register overview


Register	Offset	Description
TRCPRGCTLR	0x004	Enables the trace unit.
TRCPROCSELR	0x008	Controls which PE to trace. Might ignore writes when the trace unit is enabled or not idle. Before writing to this register, ensure that TRCSTATR.IDLE == 1 so that the trace unit can synchronize with the chosen PE. Implemented if TRCIDR3.NUMPROC is greater than zero.
TRCSTATR	0x00C	Idle status bit
TRCCONFIGR	0x010	Controls the tracing options This register must always be programmed as part of trace unit initialization. Might ignore writes when the trace unit is enabled or not idle.
TRCEVENTCTL0R	0x20	Controls the tracing of arbitrary events. If the selected event occurs a trace element is generated in the trace stream according to the settings in TRCEVENTCTL1R.DATAEN and TRCEVENTCTL1R.INSTEN.
TRCEVENTCTL1R	0x24	Controls the behavior of the events that TRCEVENTCTL0R selects. This register must always be programmed as part of trace unit initialization. Might ignore writes when the trace unit is enabled or not idle.
TRCSTALLCTLR	0x2C	Enables trace unit functionality that prevents trace unit buffer overflows. Might ignore writes when the trace unit is enabled or not idle. Must be programmed if TRCIDR3.STALLCTL == 1.
TRCTSCTLR	0x30	Controls the insertion of global timestamps in the trace streams. When the selected event is triggered, the trace unit inserts a global timestamp into the trace streams. Might ignore writes when the trace unit is enabled or not idle. Must be programmed if TRCCONFIGR.TS == 1.
TRCSYNCPR	0x34	Controls how often trace synchronization requests occur. Might ignore writes when the trace unit is enabled or not idle. If writes are permitted then the register must be programmed.
TRCCCCTLR	0x38	Sets the threshold value for cycle counting. Might ignore writes when the trace unit is enabled or not idle. Must be programmed if TRCCONFIGR.CCI==1.
TRCBBCTLR	0x3C	Controls which regions in the memory map are enabled to use branch broadcasting. Might ignore writes when the trace unit is enabled or not idle. Must be programmed if TRCCONFIGR.BB == 1.
TRCTRACEIDR	0x40	Sets the trace ID for instruction trace. If data trace is enabled then it also sets the trace ID for data trace, to (trace ID for instruction trace) + 1. This register must always be programmed as part of trace unit initialization. Might ignore writes when the trace unit is enabled or not idle.
TRCQCTLR	0x44	Controls when Q elements are enabled. Might ignore writes when the trace unit is enabled or not idle. This register must be programmed if it is implemented and TRCCONFIGR.QE is set to any value other than 0b00.
TRCVICTLR	0x080	Controls instruction trace filtering. Might ignore writes when the trace unit is enabled or not idle. Only returns stable data when TRCSTATR.PMSTABLE == 1. Must be programmed, particularly to set the value of the SSSTATUS bit, which sets the state of the start/stop logic.
TRCVIIECTLR	0x084	ViewInst exclude control. Might ignore writes when the trace unit is enabled or not idle. This register must be programmed when one or more address comparators are implemented.
TRCVISSCTLR	0x088	Use this to set, or read, the single address comparators that control the ViewInst start/stop logic. The start/stop logic is active for an instruction which causes a start and remains active up to and including an instruction which causes a stop, and then the start/stop logic becomes inactive. Might ignore writes when the trace unit is enabled or not idle. If implemented then this register must be programmed.
TRCVIPCSSCTLR	0x08C	Use this to set, or read, which PE comparator inputs can control the ViewInst start/stop logic. Might ignore writes when the trace unit is enabled or not idle. If implemented then this register must be programmed.
TRCVDCTLR	0x0A0	Controls data trace filtering. Might ignore writes when the trace unit is enabled or not idle. This register must be programmed when data tracing is enabled, that is, when either TRCCONFIGR.DA == 1 or TRCCONFIGR.DV == 1.
TRCVDSACCTLR	0x0A4	ViewData include / exclude control. Might ignore writes when the trace unit is enabled or not idle. This register must be programmed when one or more address comparators are implemented.
TRCVDARCCTLR	0x0A8	ViewData include / exclude control. Might ignore writes when the trace unit is enabled or not idle. This register must be programmed when one or more address comparators are implemented.
TRCSEQEVR[n]	0x100	Moves the sequencer state according to programmed events. Might ignore writes when the trace unit is enabled or not idle. When the sequencer is used, all sequencer state transitions must be programmed with a valid event.
TRCSEQRSTEVR	0x118	Moves the sequencer to state 0 when a programmed event occurs. Might ignore writes when the trace unit is enabled or not idle. When the sequencer is used, all sequencer state transitions must be programmed with a valid event.
TRCSEQSTR	0x11C	Use this to set, or read, the sequencer state. Might ignore writes when the trace unit is enabled or not idle. Only returns stable data when TRCSTATR.PMSTABLE == 1. When the sequencer is used, all sequencer state transitions must be programmed with a valid event.
TRCEXTINSELR	0x120	Use this to set, or read, which external inputs are resources to the trace unit. Might ignore writes when the trace unit is enabled or not idle. Only returns stable data when TRCSTATR.PMSTABLE == 1. When the sequencer is used, all sequencer state transitions must be programmed with a valid event.
TRCCNTRLDVR[n]	0x140	This sets or returns the reload count value for counter n. Might ignore writes when the trace unit is enabled or not idle.
TRCCNTCTLR[n]	0x150	Controls the operation of counter n. Might ignore writes when the trace unit is enabled or not idle.
TRCCNTVR[n]	0x160	This sets or returns the value of counter n. The count value is only stable when TRCSTATR.PMSTABLE == 1. If software uses counter n then it must write to this register to set the initial counter value. Might ignore writes when the trace unit is enabled or not idle.
TRCRSCTLR[n]	0x200	Controls the selection of the resources in the trace unit. Might ignore writes when the trace unit is enabled or not idle. If software selects a non-implemented resource then CONSTRAINED UNPREDICTABLE behavior of the resource selector occurs, so the resource selector might fire unexpectedly or might not fire. Reads of the TRCRSCTLRn might return UNKNOWN.
TRCSSCCR0	0x280	Controls the single-shot comparator.
TRCSSCSR0	0x2A0	Indicates the status of the single-shot comparators. TRCSSCSR0 is sensitive toinstruction addresses.
TRCSSPCICR0	0x2C0	Selects the processor comparator inputs for Single-shot control.
TRCPDCR	0x310	Controls the single-shot comparator.
TRCPDSR	0x314	Indicates the power down status of the ETM.
TRCITATBIDR	0xEE4	Sets the state of output pins.
TRCITIATBINR	0xEF4	Reads the state of the input pins.
TRCITIATBOUTR	0xEFC	Sets the state of the output pins.
TRCITCTRL	0xF00	Enables topology detection or integration testing, by putting ETM-M33 into integration mode.
TRCCLAIMSET	0xFA0	Sets bits in the claim tag and determines the number of claim tag bits implemented.
TRCCLAIMCLR	0xFA4	Clears bits in the claim tag and determines the current value of the claim tag.
TRCAUTHSTATUS	0xFB8	Indicates the current level of tracing permitted by the system
TRCDEVARCH	0xFBC	The TRCDEVARCH identifies ETM-M33 as an ETMv4.2 component
TRCDEVTYPE	0xFCC	Controls the single-shot comparator.
TRCPIDR[n]	0xFD0	Coresight peripheral identification registers.
TRCCIDR[n]	0xFF0	Coresight component identification registers.

TRCPRGCTLR

Address offset: 0x004

Enables the trace unit.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																			A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	EN										Trace unit enable bit
			Disabled	0								The trace unit is disabled. All trace resources are inactive and no trace is generated.
			Enabled	1								The trace unit is enabled.

TRCPROCSELR

Address offset: 0x008

Controls which PE to trace.

Might ignore writes when the trace unit is enabled or not idle.

Before writing to this register, ensure that TRCSTATR.IDLE == 1 so that the trace unit can synchronize with the chosen PE.

Implemented if TRCIDR3.NUMPROC is greater than zero.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																															A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PROCSEL										PE select bits that select the PE to trace.

TRCSTATR

Address offset: 0x00C

Idle status bit


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	IDLE										Trace unit enable bit
			NotIdle	0								The trace unit is not idle.
			Idle	1								The trace unit is idle.
B	RW	PMSTABLE										Programmers' model stable bit
			NotStable	0								The programmers' model is not stable.
			Stable	1								The programmers' model is stable.

TRCCONFIGR

Address offset: 0x010

Controls the tracing options

This register must always be programmed as part of trace unit initialization.

Might ignore writes when the trace unit is enabled or not idle.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																		M	L	K	J	J	I	H	G	G	G	F	E		D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	LOADASP0INST										Instruction P0 load field. This field controls whether load instructions are traced as P0 instructions.
			No	0								Do not trace load instructions as P0 instructions.
			Yes	1								Trace load instructions as P0 instructions.
B	RW	STOREASP0INST										Instruction P0 field. This field controls whether store instructions are traced as P0 instructions.
			No	0								Do not trace store instructions as P0 instructions.
			Yes	1								Trace store instructions as P0 instructions.
C	RW	BB										Branch broadcast mode bit.
			Disabled	0								Branch broadcast mode is disabled.
			Enabled	1								Branch broadcast mode is enabled.
D	RW	CCI										Cycle counting instruction trace bit.
			Disabled	0								Cycle counting in the instruction trace is disabled.
			Enabled	1								Cycle counting in the instruction trace is enabled.
E	RW	CID										Context ID tracing bit.
			Disabled	0								Context ID tracing is disabled.
			Enabled	1								Context ID tracing is enabled.
F	RW	VMID										Virtual context identifier tracing bit.
			Disabled	0								Virtual context identifier tracing is disabled.
			Enabled	1								Virtual context identifier tracing is enabled.
G	RW	COND										Conditional instruction tracing bit.
			Disabled	0								Conditional instruction tracing is disabled.
			LoadOnly	1								Conditional load instructions are traced.
			StoreOnly	2								Conditional store instructions are traced.
			LoadAndStore	3								Conditional load and store instructions are traced.
			All	7								All conditional instructions are traced.
H	RW	TS										Global timestamp tracing bit.
			Disabled	0								Global timestamp tracing is disabled.
			Enabled	1								Global timestamp tracing is enabled.
I	RW	RS										Return stack enable bit.
			Disabled	0								Return stack is disabled.
			Enabled	1								Return stack is enabled.
J	RW	QE										Q element enable field.
			Disabled	0								Q elements are disabled.
			OnlyWithoutInstCounts	1								Q elements with instruction counts are enabled. Q elements without instruction counts are disabled.
			Enabled	3								Q elements with and without instruction counts are enabled.
K	RW	VMIDOPT										Control bit to select the Virtual context identifier value used by the trace unit, both for trace generation and in the Virtual context identifier comparators.
			VTTBR_EL2	0								VTTBR_EL2.VMID is used. If the trace unit supports a Virtual context identifier larger than the VTTBR_EL2.VMID, the upper unused bits are always zero. If the trace unit supports a Virtual context identifier larger than 8 bits and if the VTCR_EL2.VS bit forces use of an 8-bit Virtual context identifier, bits [15:8] of the trace unit Virtual context identifier are always zero.
			CONTEXTIDR_EL2	1								CONTEXTIDR_EL2 is used.
L	RW	DA										Data address tracing bit.
			Disabled	0								Data address tracing is disabled.
			Enabled	1								Data address tracing is enabled.
M	RW	DV										Data value tracing bit.
			Disabled	0								Data value tracing is disabled.
			Enabled	1								Data value tracing is enabled.

TRCEVENTCTL0R

Address offset: 0x20

Controls the tracing of arbitrary events.

If the selected event occurs a trace element is generated in the trace stream according to the settings in TRCEVENTCTL1R.DATAEN and TRCEVENTCTL1R.INSTEN.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	EVENT		[0:255]								Select which event should generate trace elements.

TRCEVENTCTL1R

Address offset: 0x24

Controls the behavior of the events that TRCEVENTCTL0R selects.

This register must always be programmed as part of trace unit initialization.

Might ignore writes when the trace unit is enabled or not idle.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																							G	F							E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	INSTEN[i] (i=0..3)										Instruction event enable field.
			Disabled	0								The trace unit does not generate an Event element.
			Enabled	1								The trace unit generates an Event element for event i, in the instruction trace stream.
E	RW	DATAEN										Data event enable bit.
			Disabled	0								The trace unit does not generate an Event element if event 0 occurs.
			Enabled	1								The trace unit generates an Event element in the data trace stream if event 0 occurs.
F	RW	ATB										AMBA Trace Bus (ATB) trigger enable bit.
			Disabled	0								ATB trigger is disabled.
			Enabled	1								ATB trigger is enabled. If a CoreSight ATB interface is implemented then when event 0 occurs the trace unit generates an ATB event.
G	RW	LPOVERRIDE										Low-power state behavior override bit. Controls how a trace unit behaves in low-power state.
			Disabled	0								Trace unit low-power state behavior is not affected. That is, the trace unit is enabled to enter low-power state.
			Enabled	1								Trace unit low-power state behavior is overridden. That is, entry to a low-power state does not affect the trace unit resources or trace generation.

TRCSTALLCTLR

Address offset: 0x2C

Enables trace unit functionality that prevents trace unit buffer overflows.

Might ignore writes when the trace unit is enabled or not idle.

Must be programmed if TRCIDR3.STALLCTL == 1.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																						G	F	E	D	C	B					A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	LEVEL		[15:0]								Threshold level field. If LEVEL is nonzero then a trace unit might suppress the generation of: Global timestamps in the instruction trace stream and the data trace stream. Cycle counting in the instruction trace stream, although the cumulative cycle count remains correct.
			Min	0								Zero invasion. This setting has a greater risk of a FIFO overflow
			Max	15								Maximum invasion occurs but there is less risk of a FIFO overflow.
B	RW	ISTALL										Instruction stall bit. Controls if a trace unit can stall the PE when the instruction trace buffer space is less than LEVEL.
			Disabled	0								The trace unit must not stall the PE.
			Enabled	1								The trace unit can stall the PE.
C	RW	DSTALL										Data stall bit. Controls if a trace unit can stall the PE when the data trace buffer space is less than LEVEL.
			Disabled	0								The trace unit must not stall the PE.
			Enabled	1								The trace unit can stall the PE.
D	RW	INSTPRIORITY										Prioritize instruction trace bit. Controls if a trace unit can prioritize instruction trace when the instruction trace buffer space is less than LEVEL.
			Disabled	0								The trace unit must not prioritize instruction trace.
			Enabled	1								The trace unit can prioritize instruction trace. A trace unit might prioritize instruction trace by preventing output of data trace, or other means which ensure that the instruction trace has a higher priority than the data trace.
E	RW	DATADISCARDLOAD										Data discard field. Controls if a trace unit can discard data trace elements on a load when the data trace buffer space is less than LEVEL.
			Disabled	0								The trace unit must not discard any data trace elements.
			Enabled	1								The trace unit can discard P1 and P2 elements associated with data loads.
F	RW	DATADISCARDSTORE										Data discard field. Controls if a trace unit can discard data trace elements on a store when the data trace buffer space is less than LEVEL.
			Disabled	0								The trace unit must not discard any data trace elements.
			Enabled	1								The trace unit can discard P1 and P2 elements associated with data stores.
G	RW	NOOVERFLOW										Trace overflow prevention bit.
			Disabled	0								Trace overflow prevention is disabled.
			Enabled	1								Trace overflow prevention is enabled. This might cause a significant performance impact.

TRCTSCTLR

Address offset: 0x30

Controls the insertion of global timestamps in the trace streams.

When the selected event is triggered, the trace unit inserts a global timestamp into the trace streams.

Might ignore writes when the trace unit is enabled or not idle.

Must be programmed if TRCCONFIGR.TS == 1.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	EVENT		[0:255]								Select which event should generate time stamps.

TRCSYNCPR

Address offset: 0x34

Controls how often trace synchronization requests occur.

Might ignore writes when the trace unit is enabled or not idle.

If writes are permitted then the register must be programmed.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																															A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PERIOD		[31:0]								Controls how many bytes of trace, the sum of instruction and data, that a trace unit can generate before a trace synchronization request occurs. The number of bytes is always a power of two, calculated by 2^PERIOD
			Disabled	0								Trace synchronization requests are disabled. This setting does not disable other types of trace synchronization request.

TRCCCCTLR

Address offset: 0x38

Sets the threshold value for cycle counting.

Might ignore writes when the trace unit is enabled or not idle.

Must be programmed if TRCCONFIGR.CCI==1.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																								A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	THRESHOLD		[2047:0]								Sets the threshold value for instruction trace cycle counting.

TRCBBCTLR

Address offset: 0x3C

Controls which regions in the memory map are enabled to use branch broadcasting.

Might ignore writes when the trace unit is enabled or not idle.

Must be programmed if TRCCONFIGR.BB == 1.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	RANGE[i] (i=0..7)										Address range field. Selects which address range comparator pairs are in use with branch broadcasting. Each field represents an address range comparator pair, so field[i] controls the selection of address range comparator pair i.
			Disabled	0								The address range that address range comparator pair i defines, is not selected.
			Enabled	1								The address range that address range comparator pair n defines, is selected.

TRCTRACEIDR

Address offset: 0x40

Sets the trace ID for instruction trace. If data trace is enabled then it also sets the trace ID for data trace, to (trace ID for instruction trace) + 1.

This register must always be programmed as part of trace unit initialization.

Might ignore writes when the trace unit is enabled or not idle.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																													A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	TRACEID										Trace ID field. Sets the trace ID value for instruction trace. Bit[0] must be zero if data trace is enabled. If data trace is enabled then a trace unit sets the trace ID for data trace, to TRACEID+1.

TRCQCTLR

Address offset: 0x44

Controls when Q elements are enabled.

Might ignore writes when the trace unit is enabled or not idle.

This register must be programmed if it is implemented and TRCCONFIGR.QE is set to any value other than 0b00.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																											I	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	RANGE[i] (i=0..7)										Specifies the address range comparators to be used for controlling Q elements.
			Disabled	0								Address range comparator i is disabled.
			Enabled	1								Address range comparator i is selected for use.
I	RW	MODE										Selects whether the address range comparators selected by the RANGE field indicate address ranges where the trace unit is permitted to generate Q elements or address ranges where the trace unit is not permitted to generate Q elements:
			Exclude	0								Exclude mode. The address range comparators selected by the RANGE field indicate address ranges where the trace unit cannot generate Q elements. If no ranges are selected, Q elements are permitted across the entire memory map.
			Include	1								Include mode. The address range comparators selected by the RANGE field indicate address ranges where the trace unit can generate Q elements. If all the implemented bits in RANGE are set to 0 then Q elements are disabled.

TRCVICTLR

Address offset: 0x080

Controls instruction trace filtering.

Might ignore writes when the trace unit is enabled or not idle.

Only returns stable data when TRCSTATR.PMSTABLE == 1.

Must be programmed, particularly to set the value of the SSSTATUS bit, which sets the state of the start/stop logic.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID												L	K	J	I	H	G	F	E					D	C	B					A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	EVENT_SEL										Select which resource number should be filtered.
			Disabled	0								This event is not filtered.
			Enabled	1								This event is filtered.
B	RW	SSSTATUS										When TRCIDR4.NUMACPAIRS > 0 or TRCIDR4.NUMPC > 0, this bit returns the status of the start/stop logic.
			Stopped	0								The start/stop logic is in the stopped state.
			Started	1								The start/stop logic is in the started state.
C	RW	TRCRESET										Controls whether a trace unit must trace a Reset exception.
			Disabled	0								The trace unit does not trace a Reset exception unless it traces the exception or instruction immediately prior to the Reset exception.
			Enabled	1								The trace unit always traces a Reset exception.
D	RW	TRCERR										When TRCIDR3.TRCERR==1, this bit controls whether a trace unit must trace a System error exception.
			Disabled	0								The trace unit does not trace a System error exception unless it traces the exception or instruction immediately prior to the System error exception.
			Enabled	1								The trace unit always traces a System error exception, regardless of the value of ViewInst.
E-H	RW	EXLEVEL[i]_S (i=0..3)										In Secure state, each bit controls whether instruction tracing is enabled for the corresponding Exception level i.
			Disabled	1								The trace unit does not generate instruction trace, in Secure state, for Exception level i.
			Enabled	0								The trace unit generates instruction trace, in Secure state, for Exception level i.
I-L	RW	EXLEVEL[i]_NS (i=0..3)										In Non-secure state, each bit controls whether instruction tracing is enabled for the corresponding Exception level i.
			Disabled	1								The trace unit does not generate instruction trace, in Non-secure state, for Exception level i.
			Enabled	0								The trace unit generates instruction trace, in Non-secure state, for Exception level i.

TRCVIIECTLR

Address offset: 0x084

ViewInst exclude control.

Might ignore writes when the trace unit is enabled or not idle.

This register must be programmed when one or more address comparators are implemented.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID												P	O	N	M	L	K	J	I									H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	INCLUDE[i] (i=0..7)										Include range field. Selects which address range comparator pairs are in use with ViewInst include control.
			Disabled	0								The address range that address range comparator pair i defines, is not selected for ViewInst include control.
			Enabled	1								The address range that address range comparator pair i defines, is selected for ViewInst include control.
I-P	RW	EXCLUDE[i] (i=0..7)										Exclude range field. Selects which address range comparator pairs are in use with ViewInst exclude control.
			Disabled	0								The address range that address range comparator pair i defines, is not selected for ViewInst exclude control.
			Enabled	1								The address range that address range comparator pair i defines, is selected for ViewInst exclude control.

TRCVISSCTLR

Address offset: 0x088

Use this to set, or read, the single address comparators that control the ViewInst start/stop logic. The start/stop logic is active for an instruction which causes a start and remains active up to and including an instruction which causes a stop, and then the start/stop logic becomes inactive.

Might ignore writes when the trace unit is enabled or not idle.

If implemented then this register must be programmed.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID												P	O	N	M	L	K	J	I									H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	START[i] (i=0..7)										Selects which single address comparators are in use with ViewInst start/stop control, for the purpose of starting trace.
			Disabled	0								The single address comparator i, is not selected as a start resource.
			Enabled	1								The single address comparator i, is selected as a start resource.
I-P	RW	STOP[i] (i=0..7)										Selects which single address comparators are in use with ViewInst start/stop control, for the purpose of stopping trace
			Disabled	0								The single address comparator i, is not selected as a stop resource.
			Enabled	1								The single address comparator i, is selected as a stop resource.

TRCVIPCSSCTLR

Address offset: 0x08C

Use this to set, or read, which PE comparator inputs can control the ViewInst start/stop logic.

Might ignore writes when the trace unit is enabled or not idle.

If implemented then this register must be programmed.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID												P	O	N	M	L	K	J	I									H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	START[i] (i=0..7)										Selects which PE comparator inputs are in use with ViewInst start/stop control, for the purpose of starting trace
			Disabled	0								The single PE comparator input i, is not selected as a start resource.
			Enabled	1								The single PE comparator input i, is selected as a start resource.
I-P	RW	STOP[i] (i=0..7)										Selects which PE comparator inputs are in use with ViewInst start/stop control, for the purpose of stopping trace.
			Disabled	0								The single PE comparator input i, is not selected as a stop resource.
			Enabled	1								The single PE comparator input i, is selected as a stop resource.

TRCVDCTLR

Address offset: 0x0A0

Controls data trace filtering.

Might ignore writes when the trace unit is enabled or not idle.

This register must be programmed when data tracing is enabled, that is, when either TRCCONFIGR.DA == 1 or TRCCONFIGR.DV == 1.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																							L	K	J	I	I	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	EVENT[i] (i=0..7)										Event unit enable bit.
			Disabled	0								The trace event is not selected for trace filtering.
			Enabled	1								The trace event is selected for trace filtering.
I	RW	SPREL										Controls whether a trace unit traces data for transfers that are relative to the Stack Pointer (SP).
			Enabled	0								The trace unit does not affect the tracing of SP-relative transfers.
			DataOnly	2								The trace unit does not trace the address portion of SP-relative transfers. If data value tracing is enabled then the trace unit generates a P1 data address element.
			Disabled	3								The trace unit does not trace the address or value portions of SP-relative transfers.
J	RW	PCREL										Controls whether a trace unit traces data for transfers that are relative to the Program Counter (PC).
			Enabled	0								The trace unit does not affect the tracing of PC-relative transfers.
			Disabled	1								The trace unit does not trace the address or value portions of PC-relative transfers.
K	RW	TBI										Controls which information a trace unit populates in bits[63:56] of the data address.
			SignExtend	0								The trace unit assigns bits[63:56] to have the same value as bit[55] of the data address, that is, it sign-extends the value.
			Copy	1								The trace unit assigns bits[63:56] to have the same value as bits[63:56] of the data address.
L	RW	TRCEXDATA										Controls the tracing of data transfers for exceptions and exception returns on Armv6-M, Armv7-M, and Armv8-M PEs.
			Disabled	0								Exception and exception return data transfers are not traced.
			Enabled	1								Exception and exception return data transfers are traced if the other aspects of ViewData indicate that the data transfers must be traced.

TRCVDSACCTLR

Address offset: 0x0A4

ViewData include / exclude control.

Might ignore writes when the trace unit is enabled or not idle.

This register must be programmed when one or more address comparators are implemented.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID												P	O	N	M	L	K	J	I									H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	INCLUDE[i] (i=0..7)										Selects which single address comparators are in use with ViewData include control.
			Disabled	0								The single address comparator i, is not selected for ViewData include control.
			Enabled	1								The single address comparator i, is selected for ViewData include control.
I-P	RW	EXCLUDE[i] (i=0..7)										Selects which single address comparators are in use with ViewData exclude control.
			Disabled	0								The single address comparator i, is not selected for ViewData exclude control.
			Enabled	1								The single address comparator i, s selected for ViewData exclude control.

TRCVDARCCTLR

Address offset: 0x0A8

ViewData include / exclude control.

Might ignore writes when the trace unit is enabled or not idle.

This register must be programmed when one or more address comparators are implemented.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID												P	O	N	M	L	K	J	I									H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	INCLUDE[i] (i=0..7)										Include range field. Selects which address range comparator pairs are in use with ViewData include control.
			Disabled	0								The address range that address range comparator i defines, is not selected for ViewData include control.
			Enabled	1								The address range that address range comparator i defines, is selected for ViewData include control.
I-P	RW	EXCLUDE[i] (i=0..7)										Exclude range field. Selects which address range comparator pairs are in use with ViewData exclude control.
			Disabled	0								The address range that address range comparator i defines, is not selected for ViewData exclude control.
			Enabled	1								The address range that address range comparator i defines, s selected for ViewData exclude control.

TRCSEQEVR[n] (n=0..2)

Address offset: 0x100 + (n × 0x4)

Moves the sequencer state according to programmed events.

Might ignore writes when the trace unit is enabled or not idle.

When the sequencer is used, all sequencer state transitions must be programmed with a valid event.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																				P	O	N	M	L	K	J	I	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	F[i] (i=0..7)										Forward field.
			Disabled	0								The trace event does not affect the sequencer.
			Enabled	1								When the event occurs then the sequencer state moves from state n to state n+1.
I-P	RW	B[i] (i=0..7)										Backward field.
			Disabled	0								The trace event does not affect the sequencer.
			Enabled	1								When the event occurs then the sequencer state moves from state n+1 to state n.

TRCSEQRSTEVR

Address offset: 0x118

Moves the sequencer to state 0 when a programmed event occurs.

Might ignore writes when the trace unit is enabled or not idle.

When the sequencer is used, all sequencer state transitions must be programmed with a valid event.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	EVENT		[0:255]								Select which event should reset the sequencer.

TRCSEQSTR

Address offset: 0x11C

Use this to set, or read, the sequencer state.

Might ignore writes when the trace unit is enabled or not idle.

Only returns stable data when TRCSTATR.PMSTABLE == 1.

When the sequencer is used, all sequencer state transitions must be programmed with a valid event.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	STATE										Sets or returns the state of the sequencer.
			State0	0								The sequencer is in state 0.
			State1	1								The sequencer is in state 1.
			State2	2								The sequencer is in state 2.
			State3	3								The sequencer is in state 3.

TRCEXTINSELR

Address offset: 0x120

Use this to set, or read, which external inputs are resources to the trace unit.

Might ignore writes when the trace unit is enabled or not idle.

Only returns stable data when TRCSTATR.PMSTABLE == 1.

When the sequencer is used, all sequencer state transitions must be programmed with a valid event.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				D	D	D	D	D	D	D	D	C	C	C	C	C	C	C	C	B	B	B	B	B	B	B	B	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	SEL[i] (i=0..3)		[0:255]								Each field in this collection selects an external input as a resource for the trace unit.

TRCCNTRLDVR[n] (n=0..3)

Address offset: 0x140 + (n × 0x4)

This sets or returns the reload count value for counter n.

Might ignore writes when the trace unit is enabled or not idle.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	VALUE		[0:65535]								Contains the reload value for counter n. When a reload event occurs for counter n then the trace unit copies the VALUEn field into counter n.

TRCCNTCTLR[n] (n=0..3)

Address offset: 0x150 + (n × 0x4)

Controls the operation of counter n.

Might ignore writes when the trace unit is enabled or not idle.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																		D	C	B	B	B	B	B	B	B	B	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	CNTEVENT		[0:255]								Selects an event, that when it occurs causes counter n to decrement.
B	RW	RLDEVENT		[0:255]								Selects an event, that when it occurs causes a reload event for counter n.
C	RW	RLDSELF										Controls whether a reload event occurs for counter n, when counter n reaches zero.
			Disabled	0								The counter is in Normal mode.
			Enabled	1								The counter is in Self-reload mode.
D	RW	CNTCHAIN										For TRCCNTCTLR3 and TRCCNTCTLR1, this bit controls whether counter n decrements when a reload event occurs for counter n-1.
			Disabled	0								Counter n does not decrement when a reload event for counter n-1 occurs.
			Enabled	1								Counter n decrements when a reload event for counter n-1 occurs. This concatenates counter n and counter n-1, to provide a larger count value.

TRCCNTVR[n] (n=0..3)

Address offset: 0x160 + (n × 0x4)

This sets or returns the value of counter n.

The count value is only stable when TRCSTATR.PMSTABLE == 1.

If software uses counter n then it must write to this register to set the initial counter value.

Might ignore writes when the trace unit is enabled or not idle.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	VALUE		[0:65535]								Contains the count value of counter n.

TRCRSCTLR[n] (n=2..31)

Address offset: 0x200 + (n × 0x4)

Controls the selection of the resources in the trace unit.

Might ignore writes when the trace unit is enabled or not idle.

If software selects a non-implemented resource then CONSTRAINED UNPREDICTABLE behavior of the resource selector occurs, so the resource selector might fire unexpectedly or might not fire. Reads of the TRCRSCTLRn might return UNKNOWN.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																			A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	EN										Trace unit enable bit
			Disabled	0								The trace unit is disabled. All trace resources are inactive and no trace is generated.
			Enabled	1								The trace unit is enabled.

TRCSSCCR0

Address offset: 0x280

Controls the single-shot comparator.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID											A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	RST										Enables the single-shot comparator resource to be reset when it occurs, to enable another comparator match to be detected
			Disabled	0								Multiple matches can not be detected.
			Enabled	1								Multiple matches can occur.

TRCSSCSR0

Address offset: 0x2A0

Indicates the status of the single-shot comparators. TRCSSCSR0 is sensitive toinstruction addresses.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				E																												D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	INST										Instruction address comparator support
			False	0								Single-shot instruction address comparisons not supported.
			True	1								Single-shot instruction address comparisons supported.
B	RW	DA										Data address comparator support
			False	0								Data address comparisons not supported.
			True	1								Data address comparisons supported.
C	RW	DV										Data value comparator support
			False	0								Data value comparisons not supported.
			True	1								Data value comparisons supported.
D	RW	PC										Process counter value comparator support
			False	0								Process counter value comparisons not supported.
			True	1								Process counter value comparisons supported.
E	RW	STATUS										Single-shot status. This indicates whether any of the selected comparators have matched.
			NoMatch	0								Match has not occurred.
			Match	1								Match has occurred at least once.

TRCSSPCICR0

Address offset: 0x2C0

Selects the processor comparator inputs for Single-shot control.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	PC[i] (i=0..3)										Selects processor comparator i inputs for Single-shot control
			Disabled	0								Processor comparator i is not selected for Single-shot control.
			Enabled	1								Processor comparator i is selected for Single-shot control.

TRCPDCR

Address offset: 0x310

Controls the single-shot comparator.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID											A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PU										Power up request, to request that power to ETM and access to the trace registers is maintained.
			Disabled	0								Power not requested.
			Enabled	1								Power requested.

TRCPDSR

Address offset: 0x314

Indicates the power down status of the ETM.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	POWER										Indicates ETM is powered up
			NotPoweredUp	0								ETM is not powered up. All registers are not accessible.
			PoweredUp	1								ETM is powered up. All registers are accessible.
B	RW	STICKYPD										Sticky power down state. This bit is set to 1 when power to the ETM registers is removed, to indicate that programming state has been lost. It is cleared after a read of the TRCPDSR
			NotPoweredDown	0								Trace register power has not been removed since the TRCPDSR was last read.
			PoweredDown	1								Trace register power has been removed since the TRCPDSR was last read.

TRCITATBIDR

Address offset: 0xEE4

Sets the state of output pins.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																													G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-G	RW	ID[i] (i=0..6)										Drives the ATIDMI[i] output pin.

TRCITIATBINR

Address offset: 0xEF4

Reads the state of the input pins.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATVALID										Returns the value of the ATVALIDMI input pin.
B	RW	AFREADY										Returns the value of the AFREADYMI input pin.

TRCITIATBOUTR

Address offset: 0xEFC

Sets the state of the output pins.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATVALID										Drives the ATVALIDMI output pin.
B	RW	AFREADY										Drives the AFREADYMI output pin.

TRCITCTRL

Address offset: 0xF00

Enables topology detection or integration testing, by putting ETM-M33 into integration mode.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																			A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	IME										Integration mode enable
			Disabled	0								ETM is not in integration mode.
			Enabled	1								ETM is in integration mode.

TRCCLAIMSET

Address offset: 0xFA0

Sets bits in the claim tag and determines the number of claim tag bits implemented.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	SET[i] (i=0..3)										Claim tag set register
			NotSet	0								Claim tag i is not set.
			Set	1								Claim tag i is set.
			Claim	1								Set claim tag i.

TRCCLAIMCLR

Address offset: 0xFA4

Clears bits in the claim tag and determines the current value of the claim tag.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	CLR[i] (i=0..3)										Claim tag clear register
			NotSet	0								Claim tag i is not set.
			Set	1								Claim tag i is set.
			Clear	1								Clear claim tag i.

TRCAUTHSTATUS

Address offset: 0xFB8

Indicates the current level of tracing permitted by the system


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												D	D	C	C	B	B	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	NSID										Non-secure Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
B	RW	NSNID										Non-secure Non-Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
C	RW	SID										Secure Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
D	RW	SNID										Secure Non-Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.

TRCDEVARCH

Address offset: 0xFBC

The TRCDEVARCH identifies ETM-M33 as an ETMv4.2 component


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				D	D	D	D	D	D	D	D	D	D	D	C	B	B	B	B	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	ARCHID										Architecture ID
			ETMv42	0x4A13								Component is an ETMv4 component
B	R	REVISION										Architecture revision
			v2	2								Component is part of architecture 4.2
C	R	PRESENT										This register is implemented
			Absent	0								The register is not implemented.
			Present	1								The register is implemented.
D	R	ARCHITECT										Defines the architect of the component
			Arm	0x23B								This peripheral was architected by Arm.

TRCDEVTYPE

Address offset: 0xFCC

Controls the single-shot comparator.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	MAJOR										The main type of the component
			TraceSource	3								Peripheral is a trace source.
B	R	SUB										The sub-type of the component
			ProcessorTrace	1								Peripheral is a processor trace source.

TRCPIDR[n] (n=0..7)

Address offset: 0xFD0 + (n × 0x4)

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

TRCCIDR[n] (n=0..3)

Address offset: 0xFF0 + (n × 0x4)

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

TPIU — Trace port interface unit

The ARM® CoreSight™ TPIU connects an ATB to an external trace port.

This document only provides a register-level description of this ARM component. See the ARM® CoreSight™ SoC-400 Technical Reference Manual for more details

Registers

Instances


Instance	Base address	TrustZone			Split access	Description
Instance	Base address	Map	Att	DMA	Split access	Description
TPIU	0xE0054000	HF	NS	NA	No	TPIU

Register overview


Register	Offset	Description
SUPPORTEDPORTSIZES	0x000	Each bit location is a single port size that is supported on the device.
CURRENTPORTSIZE	0x004	Each bit location is a single port size. One bit can be set, and indicates the current port size.
SUPPORTEDTRIGGERMODES	0x100	The Supported_trigger_modes register indicates the implemented trigger counter multipliers and other supported features of the trigger system.
TRIGGERCOUNTERVALUE	0x104	The Trigger_counter_value register enables delaying the indication of triggers to any external connected trace capture or storage devices.
TRIGGERMULTIPLIER	0x108	The Trigger_multiplier register contains the selectors for the trigger counter multiplier.
SUPPPORTEDTESTPATTERNMODES	0x200	The Supported_test_pattern_modes register provides a set of known bit sequences or patterns that can be output over the trace port and can be detected by the TPA or other associated trace capture device.
CURRENTTESTPATTERNMODES	0x204	Current_test_pattern_mode indicates the current test pattern or mode selected.
TPRCR	0x208	The TPRCR register is an 8-bit counter start value that is decremented. A write sets the initial counter value and a read returns the programmed value.
FFSR	0x300	The FFSR register indicates the current status of the formatter and flush features available in the TPIU.
FFCR	0x304	The FFCR register controls the generation of stop, trigger, and flush events.
FSCR	0x308	The FSCR register enables the frequency of synchronization information to be optimized to suit the Trace Port Analyzer (TPA) capture buffer size.
EXTCTLINPORT	0x400	Two ports can be used as a control and feedback mechanism for any serializers, pin sharing multiplexers, or other solutions that might be added to the trace output pins either for pin control or a high-speed trace port solution.
EXTCTLOUTPORT	0x404	Two ports can be used as a control and feedback mechanism for any serializers, pin sharing multiplexers, or other solutions that might be added to the trace output pins either for pin control or a high speed trace port solution. These ports are raw register banks that sample or export the corresponding external pins.
ITTRFLINACK	0xEE4	The ITTRFLINACK register enables control of the triginack and flushinack outputs from the TPIU.
ITTRFLIN	0xEE8	The ITTRFLIN register contains the values of the flushin and trigin inputs to the TPIU.
ITATBDATA0	0xEEC	The ITATBDATA0 register contains the value of the atdatas inputs to the TPIU. The values are valid only when atvalids is HIGH.
ITATBCTR2	0xEF0	Enables control of the atreadys and afvalids outputs of the TPIU.
ITATBCTR1	0xEF4	The ITATBCTR1 register contains the value of the atids input to the TPIU. This is only valid when atvalids is HIGH.
ITATBCTR0	0xEF8	The ITATBCTR0 register captures the values of the atvalids, afreadys, and atbytess inputs to the TPIU. To ensure the integration registers work correctly in a system, the value of atbytess is only valid when atvalids, bit[0], is HIGH.
ITCTRL	0xF00	Used to enable topology detection. This register enables the component to switch from a functional mode, the default behavior, to integration mode where the inputs and outputs of the component can be directly controlled for integration testing and topology solving.
CLAIMSET	0xFA0	Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMSET register sets bits in the claim tag, and determines the number of claim bits implemented.
CLAIMCLR	0xFA4	Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMCLR register sets the bits in the claim tag to 0 and determines the current value of the claim tag.
LAR	0xFB0	This is used to enable write access to device registers.
LSR	0xFB4	This indicates the status of the lock control mechanism. This lock prevents accidental writes by code under debug. Accesses to the extended stimulus port registers are not affected by the lock mechanism. This register must always be present although there might not be any lock access control mechanism. The lock mechanism, where present and locked, must block write accesses to any control register, except the Lock Access Register. For most components this covers all registers except for the Lock Access Register.
AUTHSTATUS	0xFB8	Indicates the current level of tracing permitted by the system
DEVID	0xFC8	Indicates the capabilities of the component.
DEVTYPE	0xFCC	The DEVTYPE register provides a debugger with information about the component when the Part Number field is not recognized. The debugger can then report this information.
PIDR4	0xFD0	Coresight peripheral identification registers.
PIDR[0]	0xFE0	Coresight peripheral identification registers.
PIDR[1]	0xFE4	Coresight peripheral identification registers.
PIDR[2]	0xFE8	Coresight peripheral identification registers.
PIDR[3]	0xFEC	Coresight peripheral identification registers.
CIDR[0]	0xFF0	Coresight component identification registers.
CIDR[1]	0xFF4	Coresight component identification registers.
CIDR[2]	0xFF8	Coresight component identification registers.
CIDR[3]	0xFFC	Coresight component identification registers.

SUPPORTEDPORTSIZES

Address offset: 0x000

Each bit location is a single port size that is supported on the device.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				f	e	d	c	b	a	Z	Y	X	W	V	U	T	S	R	Q	P	O	N	M	L	K	J	I	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-f	RW	PORT_SIZE_[i+1] (i=0..31)										Indicates whether the TPIU supports port size of i+1-bit.
			NotSupported	0								Port size i+1 is not supported.
			Supported	1								Port size i+1 is supported.

CURRENTPORTSIZE

Address offset: 0x004

Each bit location is a single port size. One bit can be set, and indicates the current port size.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				f	e	d	c	b	a	Z	Y	X	W	V	U	T	S	R	Q	P	O	N	M	L	K	J	I	H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-f	RW	PORT_SIZE_[i+1] (i=0..31)										Indicates which port size is currently selected.
			NotSelected	0								Port size i+1 is not selected.
			Selected	1								Port size i+1 is selected.

SUPPORTEDTRIGGERMODES

Address offset: 0x100

The Supported_trigger_modes register indicates the implemented trigger counter multipliers and other supported features of the trigger system.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																		H	G								F				E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-E	RW	MULT[i] (i=0..4)										Indicates whether multiplying the trigger counter by 2^(i+1) is supported.
			NotSelected	0								Multiplying the trigger counter by 2^(i+1) is supported.
			Selected	1								Multiplying the trigger counter by 2^(i+1) is supported.
F	RW	TCOUNT8										Indicates whether an 8-bit wide counter register is implemented.
			NotImplemented	0								An 8-bit wide counter register is implemented.
			Implemented	1								An 8-bit wide counter register is implemented.
G	RW	TRIGGERED										A trigger has occurred and the counter has reached 0.
			NotOccured	0								Trigger has not occurred.
			Occured	1								Trigger has occurred.
H	RW	TRGRUN										A trigger has occurred but the counter is not at 0.
			NotOccured	0								Either a trigger has not occurred or the counter is at 0.
			Occured	1								A trigger has occurred but the counter is not at 0.

TRIGGERCOUNTERVALUE

Address offset: 0x104

The Trigger_counter_value register enables delaying the indication of triggers to any external connected trace capture or storage devices.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	TrigCount		[0:255]								8-bit counter value for the number of words to be output from the formatter before a trigger is inserted.

TRIGGERMULTIPLIER

Address offset: 0x108

The Trigger_multiplier register contains the selectors for the trigger counter multiplier.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																															E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-E	RW	MULT[i] (i=0..4)										Multiply the Trigger Counter by 2^n.
			Disabled	0								Multiplier disabled.
			Enabled	1								Multiplier enabled.

SUPPPORTEDTESTPATTERNMODES

Address offset: 0x200

The Supported_test_pattern_modes register provides a set of known bit sequences or patterns that can be output over the trace port and can be detected by the TPA or other associated trace capture device.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																		F	E													D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PATW1										Indicates whether the walking 1s pattern is supported as output over the trace port.
			NotSupported	0								Test pattern is not supported.
			Supported	1								Test pattern is supported.
B	RW	PATW0										Indicates whether the walking 0s pattern is supported as output over the trace port.
			NotSupported	0								Test pattern is not supported.
			Supported	1								Test pattern is supported.
C	RW	PATA5										Indicates whether the AA/55 pattern is supported as output over the trace port.
			NotSupported	0								Test pattern is not supported.
			Supported	1								Test pattern is supported.
D	RW	PATF0										Indicates whether the FF/00 pattern is supported as output over the trace port.
			NotSupported	0								Test pattern is not supported.
			Supported	1								Test pattern is supported.
E	RW	PTIMEEN										Indicates whether timed mode is supported.
			NotSupported	0								Mode is not supported.
			Supported	1								Mode is supported.
F	RW	PCONTEN										Indicates whether continuous mode is supported.
			NotSupported	0								Mode is not supported.
			Supported	1								Mode is supported.

CURRENTTESTPATTERNMODES

Address offset: 0x204

Current_test_pattern_mode indicates the current test pattern or mode selected.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																		F	E													D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PATW1										Indicates whether the walking 1s pattern is supported as output over the trace port.
			Disabled	0								Test pattern is disabled.
			Enabled	1								Test pattern is enabled.
B	RW	PATW0										Indicates whether the walking 0s pattern is supported as output over the trace port.
			Disabled	0								Test pattern is disabled.
			Enabled	1								Test pattern is enabled.
C	RW	PATA5										Indicates whether the AA/55 pattern is supported as output over the trace port.
			Disabled	0								Test pattern is disabled.
			Enabled	1								Test pattern is enabled.
D	RW	PATF0										Indicates whether the FF/00 pattern is supported as output over the trace port.
			Disabled	0								Test pattern is disabled.
			Enabled	1								Test pattern is enabled.
E	RW	PTIMEEN										Indicates whether timed mode is supported.
			Disabled	0								Mode is disabled.
			Enabled	1								Mode is enabled.
F	RW	PCONTEN										Indicates whether continuous mode is supported.
			Disabled	0								Mode is disabled.
			Enabled	1								Mode is enabled.

TPRCR

Address offset: 0x208

The TPRCR register is an 8-bit counter start value that is decremented. A write sets the initial counter value and a read returns the programmed value.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PATTCOUNT		[0:255]								8-bit counter value to indicate the number of traceclkin cycles for which a pattern runs before it switches to the next pattern.

FFSR

Address offset: 0x300

The FFSR register indicates the current status of the formatter and flush features available in the TPIU.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	FLINPROG										Flush in progress.
			NotInProgress	0								A flush is not in progress.
			InProgress	1								A flush is in progress.
B	RW	FTSTOPPED										The formatter has received a stop request signal and all trace data and post-amble is sent. Any additional trace data on the ATB interface is ignored and atreadys goes HIGH.
			Running	0								Formatter has not stopped.
			Stopped	1								Formatter has stopped.
C	RW	TCPRESENT										Indicates whether the TRACECTL pin is available for use.
			NotPresent	0								TRACECTL pin is not present.
			Present	1								TRACECTL pin is present.

FFCR

Address offset: 0x304

The FFCR register controls the generation of stop, trigger, and flush events.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																						K	J		I	H	G	F	E	D	C			B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ENFTC										Do not embed triggers into the formatted stream. Trace disable cycles and triggers are indicated by tracectl, where present.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
B	RW	ENFCONT										Is embedded in trigger packets and indicates that no cycle is using sync packets.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
C	RW	FONFLIN										Enables the use of the flushin connection.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
D	RW	FONTRIG										Initiates a manual flush of data in the system when a trigger event occurs.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
E	RW	FONMANR										Generates a flush. This bit is set to 0 when this flush is serviced.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
F	RW	FONMANW										Generates a flush. This bit is set to 1 when this flush is serviced.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
G	RW	TRIGIN										Indicates a trigger when trigin is asserted.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
H	RW	TRIGEVT										Indicates a trigger on a trigger event.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
I	RW	TRIGFL										Indicates a trigger when flush completion on afreadys is returned.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
J	RW	STOPFL										Forces the FIFO to drain off any part-completed packets.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.
K	RW	STOPTRIG										Stops the formatter after a trigger event is observed. Reset to disabled or 0.
			Disabled	0								The formatting feature is disabled.
			Enabled	1								The formatting feature is enabled.

FSCR

Address offset: 0x308

The FSCR register enables the frequency of synchronization information to be optimized to suit the Trace Port Analyzer (TPA) capture buffer size.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																								A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	CYCCOUNT		[0:1024]								12-bit counter reload value. Indicates the number of complete frames between full synchronization packets.

EXTCTLINPORT

Address offset: 0x400

Two ports can be used as a control and feedback mechanism for any serializers, pin sharing multiplexers, or other solutions that might be added to the trace output pins either for pin control or a high-speed trace port solution.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	EXTCTLIN[i] (i=0..7)										EXTCTL inputs.
			Low	0								Input EXTCTLi is low.
			High	1								Input EXTCTLi is high.

EXTCTLOUTPORT

Address offset: 0x404


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												H	G	F	E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-H	RW	EXTCTLOUT[i] (i=0..7)										EXTCTL outputs.
			Low	0								Output EXTCTLi is low.
			High	1								Output EXTCTLi is high.

ITTRFLINACK

Address offset: 0xEE4

The ITTRFLINACK register enables control of the triginack and flushinack outputs from the TPIU.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	TRIGINACK										Sets the value of triginack.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
B	RW	FLUSHINACK										Sets the value of flushinack.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITTRFLIN

Address offset: 0xEE8

The ITTRFLIN register contains the values of the flushin and trigin inputs to the TPIU.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	TRIGIN										Reads the value of trigin.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
B	RW	FLUSHIN										Reads the value of flushin.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITATBDATA0

Address offset: 0xEEC

The ITATBDATA0 register contains the value of the atdatas inputs to the TPIU. The values are valid only when atvalids is HIGH.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																															E	D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-E	RW	ATDATA[i] (i=0..4)										A read access returns the value of a pin on atdatas_x of the enabled port. A write access writes to the corresponding atdatam pin of the enabled port.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITATBCTR2

Address offset: 0xEF0

Enables control of the atreadys and afvalids outputs of the TPIU.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																		B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATREADY										Sets the value of afvalid.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
B	RW	AFVALID										Sets the value of atready.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITATBCTR1

Address offset: 0xEF4

The ITATBCTR1 register contains the value of the atids input to the TPIU. This is only valid when atvalids is HIGH.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																													A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATID										Reads the value of atids.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITATBCTR0

Address offset: 0xEF8

The ITATBCTR0 register captures the values of the atvalids, afreadys, and atbytess inputs to the TPIU. To ensure the integration registers work correctly in a system, the value of atbytess is only valid when atvalids, bit[0], is HIGH.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																										C	C						B		A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ATVALID										Reads the value of atvalids.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
B	RW	AFREADY										Reads the value of afreadys.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.
C	RW	ATBYTES										Reads the value of atbytess.
			Low	0								Pin is logic 0.
			High	1								Pin is logic 1.

ITCTRL

Address offset: 0xF00

Used to enable topology detection. This register enables the component to switch from a functional mode, the default behavior, to integration mode where the inputs and outputs of the component can be directly controlled for integration testing and topology solving.

Note: When a device has been in integration mode, it might not function with the original behavior. After performing integration or topology detection, you must reset the system to ensure correct behavior of CoreSight and other connected system components that are affected by the integration or topology detection.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																			A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	INTEGRATIONMODE										Enables the component to switch from functional mode to integration mode and back. If no integration functionality is implemented, this register must read as zero.
			Disabled	0								Integration mode is disabled.
			Enabled	1								Integration mode is Enabled.

CLAIMSET

Address offset: 0xFA0


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	BIT[i] (i=0..3)										Set claim bit i and check if bit is implemented or not.
			NotImplemented	0								Claim bit i is not implemented.
			Implemented	1								Claim bit i is implemented.
			Set	1								Set claim bit i.

CLAIMCLR

Address offset: 0xFA4

Software can use the claim tag to coordinate application and debugger access to trace unit functionality. The claim tags have no effect on the operation of the component. The CLAIMCLR register sets the bits in the claim tag to 0 and determines the current value of the claim tag.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																D	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A-D	RW	BIT[i] (i=0..3)										Read or clear claim bit i.
			Cleared	0								Claim bit i is not set.
			Set	1								Claim bit i is set.
			Clear	1								Clear claim bit i.

LAR

Address offset: 0xFB0

This is used to enable write access to device registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID				A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	ACCESS										A write of 0xC5ACCE55 enables further write access to this device. Any other write removes write access.
			UnLock	0xC5ACCE55								Unlock register interface.

LSR

Address offset: 0xFB4


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																	C	B	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	PRESENT										Indicates that a lock control mechanism exists for this device.
			NotImplemented	0								No lock control mechanism exists, writes to the Lock Access Register are ignored.
			Implemented	1								Lock control mechanism is present.
B	RW	LOCKED										Returns the current status of the Lock.
			UnLocked	0								Write access is allowed to this device.
			Locked	1								Write access to the component is blocked. All writes to control registers are ignored. Reads are permitted.
C	RW	TYPE										Indicates if the Lock Access Register is implemented as 8-bit or 32-bit.
			Bits32	0								This component implements a 32-bit Lock Access Register.
			Bits8	1								This component implements an 8-bit Lock Access Register.

AUTHSTATUS

Address offset: 0xFB8

Indicates the current level of tracing permitted by the system


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												D	D	C	C	B	B	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	NSID										Non-secure Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
B	RW	NSNID										Non-secure Non-Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
C	RW	SID										Secure Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.
D	RW	SNID										Secure Non-Invasive Debug
			NotImplemented	0								The feature is not implemented.
			Implemented	1								The feature is implemented.

DEVID

Address offset: 0xFC8

Indicates the capabilities of the component.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																								F	E	D	C	C	C	B	A	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	MUXNUM										Indicates the hidden level of input multiplexing. When non-zero, this value indicates the type of multiplexing on the input to the ATB. Currently only 0x00 is supported, that is, no multiplexing is present. This value helps detect the ATB structure.
B	R	CLKRELAT										Indicates the relationship between atclk and traceclkin.
			Synchronous	0								atclk and traceclkin are synchronous.
			ASynchronous	1								atclk and traceclkin are asynchronous.
C	R	FIFOSIZE										FIFO size in powers of 2.
			Entries4	2								FIFO size of 4 entries, that is, 16 bytes.
D	R	TCLKDATA										Indicates whether trace clock plus data is supported.
			Supported	0								Trace clock and data is supported.
			NotSupported	1								Trace clock and data is not supported.
E	R	SWOMAN										Indicates whether Serial Wire Output, Manchester encoded format, is supported.
			NotSupported	0								Serial Wire Output, Manchester encoded format, is not supported.
			Supported	1								Serial Wire Output, Manchester encoded format, is supported.
F	R	SWOUARTNRZ										Indicates whether Serial Wire Output, UART or NRZ, is supported.
			NotSupported	0								Serial Wire Output, UART or NRZ, is not supported.
			Supported	1								Serial Wire Output, UART or NRZ, is supported.

DEVTYPE

Address offset: 0xFCC

The DEVTYPE register provides a debugger with information about the component when the Part Number field is not recognized. The debugger can then report this information.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																												B	B	B	B	A	A	A	A
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	R	MAJOR										The main type of the component
			TraceSource	1								Peripheral is a trace sink.
B	R	SUB										The sub-type of the component
			TracePort	1								Indicates that this component is a trace port component.

PIDR4

Address offset: 0xFD0

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[0]

Address offset: 0xFE0

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[1]

Address offset: 0xFE4

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[2]

Address offset: 0xFE8

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

PIDR[3]

Address offset: 0xFEC

Coresight peripheral identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[0]

Address offset: 0xFF0

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[1]

Address offset: 0xFF4

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[2]

Address offset: 0xFF8

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description

CIDR[3]

Address offset: 0xFFC

Coresight component identification registers.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID
Reset 0x00000000				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description