TRCIDR9, ID Register 9

The TRCIDR9 characteristics are:

Purpose

Returns the tracing capabilities of the trace unit.

Configuration

External register TRCIDR9 bits [31:0] are architecturally mapped to AArch64 System register TRCIDR9[31:0].

This register is present only when FEAT_ETE is implemented and FEAT_TRC_EXT is implemented. Otherwise, direct accesses to TRCIDR9 are RES0.

Attributes

TRCIDR9 is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
NUMP0KEY

NUMP0KEY, bits [31:0]
When TRCIDR0.TRCDATA != 0b00:

Indicates the number of P0 right-hand keys. Data tracing is not implemented in ETE and this field is reserved for other trace architectures. Allocated in other trace architectures.


Otherwise:

Reserved, RES0.

Accessing TRCIDR9

TRCIDR9 can be accessed through the external debug interface:

ComponentOffsetInstance
ETE0x184TRCIDR9

This interface is accessible as follows:


30/09/2022 15:58; 21c5a6dd0fdaf10a712e2f2d6fffbdbd66d4d96f

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