10.8.7. External Debug Device ID Register 0

The EDDEVID characteristics are:

Purpose

Provides extra information for external debuggers about features of the debug implementation.

Usage constraints

Accessible through the internal memory-mapped interface and the external debug interface. The access conditions are:

OffDLKOSLKEDADSLKDefault
-----RO

Table 10.1 describes the access conditions.

Configurations

The EDDEVID is in the Debug power domain.

Attributes

See the register summary in Table 10.10.

Figure 10.13 shows the EDDEVID bit assignments.

Figure 10.13. EDDEVID bit assignments

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Table 10.17 shows the EDDEVID bit assignments.

Table 10.17. EDDEVID bit assignments

BitsNameFunction
[31:28]-

Reserved, res0.

[27:24]AuxRegs

Indicates support for auxiliary registers. The possible values are:

0x1

External Debug Auxiliary Control Register, EDACR, is implemented.

[23:4]-

Reserved, res0.

[3:0]PC Sample

Indicates the level of sample-based profiling support using external debug registers 40 through 43. Valid values of this field in v8-A are:

0x3

EDPCSR, EDCIDSR, and EDVIDSR are implemented.


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