TRCPIDR1

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TRCPIDR1, Trace Peripheral Identification Register 1

Purpose

Configuration

This register is present only when FEAT_ETE is implemented and FEAT_TRC_EXT is implemented. Otherwise, direct accesses to TRCPIDR1 are RES0.

Attributes

Field descriptions

Bits [31:8]

DES_0, bits [7:4]

Designer, JEP106 identification code, bits [3:0].

JEP106 identification and continuation codes, which are stored as follows:

TRCPIDR1.DES_0: JEP106 identification code bits[3:0].
TRCPIDR2.DES_1: JEP106 identification code bits[6:4].
TRCPIDR4.DES_2: JEP106 continuation code.

These codes indicate the designer of the component and not the implementer, except where the two are the same. To obtain a number, or to see the assignment of these codes, contact JEDEC http://www.jedec.org.

A JEDEC code takes the following form:

A sequence of zero or more numbers, all having the value 0x7F.
A following 8-bit number, that is not 0x7F, and where bit[7] is an odd parity bit.

The parity bit in the JEP106 identification code is not included.

Note

For example, Arm Limited is assigned the code 0x7F 0x7F 0x7F 0x7F 0x3B.

The continuation code is the number of times 0x7F appears before the final number. For example, a component designed by Arm Limited has the code 0x4.
The identification code is bits[6:0] of the final number. For example, a component designed by Arm Limited has the code 0x3B.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

PART_1, bits [3:0]

Part number, bits [11:8].

The part number is selected by the designer of the component, and is stored in TRCPIDR1.PART_1 and TRCPIDR0.PART_0.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

Accessing TRCPIDR1

TRCPIDR1 can be accessed through the external debug interface:

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																								DES_0				PART_1