TRBDEVTYPE, Device Type Register

The TRBDEVTYPE characteristics are:

Purpose

Provides discovery information for the component. If the part number field is not recognized, a debugger can report the information that is provided by TRBDEVTYPE about the component instead.

For additional information, see the CoreSight Architecture Specification.

Configuration

TRBDEVTYPE is in the Core power domain.

This register is present only when FEAT_TRBE_EXT is implemented. Otherwise, direct accesses to TRBDEVTYPE are RES0.

Attributes

TRBDEVTYPE 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																								SUB				MAJOR

Bits [31:8]

Reserved, RES0.

SUB, bits [7:4]

Component sub-type.

SUB	Meaning
0b0010	When MAJOR == 0x1 (Trace sink), Trace buffer or router.

This field reads as 0x2.

Access to this field is RO.

MAJOR, bits [3:0]

Component major type.

MAJOR	Meaning
0b0001	Trace sink.

This field reads as 0x1.

Access to this field is RO.

Accessing TRBDEVTYPE

TRBDEVTYPE can be accessed through the external debug interface:

Component	Offset	Instance
TRBE	0xFCC	TRBDEVTYPE

Accessible as follows:

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

15/12/2024 22:27; 5e0a212688c6bd7aee92394b6f5e491b4d0fee1d