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EDPIDR2, External Debug Peripheral Identification Register 2

The EDPIDR2 characteristics are:

Purpose

Provides information to identify an external debug component.

For more information, see 'About the Peripheral identification scheme'.

Configuration

When FEAT_DoPD is implemented, EDPIDR2 is in the Core power domain. Otherwise, EDPIDR2 is in the Debug power domain.

Implementation of this register is OPTIONAL.

This register is required for CoreSight compliance.

Attributes

EDPIDR2 is a 32-bit register.

Field descriptions

Bits [31:8]

REVISION, bits [7:4]

JEDEC, bit [3]

DES_1, bits [2:0]

Accessing EDPIDR2

EDPIDR2 can be accessed through the external debug interface:

Accessible as follows:

• When FEAT_DoPD is implemented and !IsCorePowered(), accesses to this register generate an error response.
• Otherwise, accesses to this register are RO.

2026-03-12 12:23:09, 2025-09_rel_asl1

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