D10.58 TRCPIDR4, ETM Peripheral Identification Register 4
The TRCPIDR4 provides information to identify a trace component.
Bit field descriptions
The TRCPIDR4 is a 32-bit register.
D10-55 TRCPIDR4 bit assignments
- RES0, [31:8]
- Size, [7:4]
|Size 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]
|Arm Limited. This is bits[3:0] of the JEP106 continuation
Bit fields and details not provided in this description are
architecturally defined. See the Arm® Embedded Trace Macrocell Architecture Specification ETMv4.
The TRCPIDR4 can be accessed through the external debug interface, offset