TRCPIDR3, Trace Peripheral Identification Register 3

The TRCPIDR3 characteristics are:

Purpose

Provides discovery information about the component.

For additional information, see the CoreSight Architecture Specification.

Configuration

This register is present only when FEAT_ETE is implemented and FEAT_TRC_EXT is implemented. Otherwise, direct accesses to TRCPIDR3 are RES0.

Attributes

TRCPIDR3 is a 32-bit register.

Field descriptions

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
RES0																								REVAND				CMOD

Bits [31:8]

Reserved, RES0.

REVAND, bits [7:4]

Component minor revision.

TRCPIDR2.REVISION and TRCPIDR3.REVAND together form the revision number of the component, with TRCPIDR2.REVISION being the most significant part and TRCPIDR3.REVAND the least significant part. When a component is changed, TRCPIDR2.REVISION or TRCPIDR3.REVAND are increased to ensure that software can differentiate the different revisions of the component. TRCPIDR3.REVAND should be set to 0b0000 when TRCPIDR2.REVISION is increased.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

CMOD, bits [3:0]

Customer Modified.

Indicates the component has been modified.

A value of 0b0000 means the component is not modified from the original design.

Any other value means the component has been modified in an IMPLEMENTATION DEFINED way.

For any two components with the same Unique Component Identifier:

If the value of the CMOD fields of both components equals zero, the components are identical.
If the CMOD fields of both components have the same nonzero value, it does not necessarily mean that they have the same modifications.
If the value of the CMOD field of either of the two components is nonzero, they might not be identical, even though they have the same Unique Component Identifier.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

Accessing TRCPIDR3

External debugger accesses to this register are unaffected by the OS Lock.

TRCPIDR3 can be accessed through the external debug interface:

Component	Offset	Instance
ETE	0xFEC	TRCPIDR3

This interface is accessible as follows:

When !IsTraceCorePowered(), accesses to this register generate an error response.
Otherwise, accesses to this register are RO.

26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6