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

# TRCDEVTYPE, Device Type Register

The TRCDEVTYPE characteristics are:

## Purpose

Provides discovery information for the component. If the part number field is not recognised, a debugger can report the information that is provided by TRCDEVTYPE about the component instead.

For additional information see the CoreSight Architecture Specification.

## Configuration

This register is present only when ETE is implemented. Otherwise, direct accesses to TRCDEVTYPE are RES0.

There are no configuration notes.

## Attributes

TRCDEVTYPE is a 32-bit register.

## Field descriptions

The TRCDEVTYPE bit assignments are:

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]

Component sub-type.

SUB | Meaning
--- | ---
0b0001 | When MAJOR == 0x3 (Trace source): Associated with a PE.

This field reads as 0x1.

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

Component major type.

MAJOR | Meaning
--- | ---
0b0011 | Trace source.

Other values are defined by the CoreSight Architecture.

This field reads as 0x3.

## Accessing the TRCDEVTYPE

External debugger accesses to this register are unaffected by the OS Lock.

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

Component | Offset
--- | ---
ETE | 0xFCC

This interface is accessible as follows:

- When !IsTraceCorePowered() access to this register returns an Error.
- Otherwise access to this register is RO.

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

15/04/2019 16:47; 8c23526ba8a13a72aada4137daf3e3977b49036e

Copyright © 2010-2019 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.

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