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EDCIDR2, External Debug Component Identification Register 2

The EDCIDR2 characteristics are:

Purpose

Provides information to identify an external debug component.

For more information, see 'About the Component Identification scheme'.

Configuration

Implementation of this register is OPTIONAL.

If FEAT_DoPD is implemented, this register is in the Core power domain. If FEAT_DoPD is not implemented, this register is in the Debug power domain.

This register is required for CoreSight compliance.

Attributes

EDCIDR2 is a 32-bit register.

Field descriptions

The EDCIDR2 bit assignments are:

313029282726252423222120191817161514131211109876543210
RES0PRMBL_2

Bits [31:8]

Reserved, RES0.

PRMBL_2, bits [7:0]

Preamble.

Reads as 0x05.

Accessing the EDCIDR2

EDCIDR2 can be accessed through the external debug interface:

ComponentOffsetInstance
Debug0xFF8EDCIDR2

This interface is accessible as follows:

  • When FEAT_DoPD is not implemented or IsCorePowered() accesses to this register are RO.
  • Otherwise accesses to this register generate an error response.