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Arm Cortex-A55 Core Technical Reference Manual : TRCPIDR4, ETM Peripheral Identification Register 4

TRCPIDR4, ETM Peripheral Identification Register 4

The TRCPIDR4 provides information to identify a trace component.

Bit field descriptions

Figure D8-56 TRCPIDR4 bit assignments

RES0, [31:8]
Size, [7:4]
0x0Size of the component. Log2 the number of 4KB pages from the start of the component to the end of the component ID registers.
DES_2, [3:0]
0x4Arm Limited. This is bits[3:0] of the JEP106 continuation code.

Bit fields and details not provided in this description are architecturally defined. See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile.

The TRCPIDR4 can be accessed through the external debug interface, offset 0xFD0.