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# EDDEVTYPE, External Debug Device Type register

The EDDEVTYPE characteristics are:

## Purpose

Indicates to a debugger that this component is part of a PE's debug logic.

## Configuration

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

Implementation of this register is OPTIONAL.

## Attributes

EDDEVTYPE is a 32-bit register.

## Field descriptions

31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
RES0 | SUB | MAJOR

#### Bits [31:8]

Reserved, RES0.

#### SUB, bits [7:4]

Subtype. Indicates this is a component within a PE.

Reads as 0b0001.

Access to this field is RO.

#### MAJOR, bits [3:0]

Major type. Indicates this is a debug logic component.

Reads as 0b0101.

Access to this field is RO.

## Accessing EDDEVTYPE

#### EDDEVTYPE can be accessed through the external debug interface:

Component | Offset | Instance
--- | --- | ---
Debug | 0xFCC | EDDEVTYPE

This interface is 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.

AArch32 Registers | AArch64 Registers | AArch32 Instructions | AArch64 Instructions | Index by Encoding | External Registers | External Registers by Offset | Registers by Functional Group | Proprietary Notice

26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6

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