IHI0050D_amba_5_chi_architecture_spec.pdf_CHI协议

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ARM IHI 0050D (ID082919)

AMBA

5 CHI

Architecture Specification

Non-Confidential ID082919

AMBA 5 CHI

Release Information

The Change history lists the changes made to this specification.

Proprietary Notice

This document is NON-CONFIDENTIAL

and any use by you is subject to the terms of this notice and the Arm AMBA

Specification Licence set about below.

This document is protected by copyright and other related rights and the practice or implementation of the information contained

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LES-PRE-21451

Change history

Date Issue Confidentiality Change

12 June 2014 A Confidential First limited release

04 August 2017 B Non-Confidential First public release

08 May 2018 C Non-Confidential Second public release

28 August 2019 D Non-Confidential Third public release

ID082919 Non-Confidential

In this document, where the term Arm is used to refer to the company it means “Arm or any of its subsidiaries as appropriate”.

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THIS END USER LICENCE AGREEMENT (“LICENCE”) IS A LEGAL AGREEMENT BETWEEN YOU (EITHER A

SINGLE INDIVIDUAL, OR SINGLE LEGAL ENTITY) AND ARM LIMITED (“ARM”) FOR THE USE OF THE RELEVANT

AMBA SPECIFICATION ACCOMPANYING THIS LICENCE. ARM IS ONLY WILLING TO LICENSE THE RELEVANT

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RETURN THE RELEVANT AMBA SPECIFICATION TO ARM.

“LICENSEE” means You and your Subsidiaries.

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1. Subject to the provisions of Clauses 2, 3 and 4, Arm hereby grants to LICENSEE a perpetual, non-exclusive, non-transferable,

royalty free, worldwide licence to:

(i) use and copy the relevant AMBA Specification for the purpose of developing and having developed products that comply with

the relevant AMBA Specification;

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shall be construed as authority for LICENSEE to make any representations on behalf of Arm in respect of the relevant AMBA

Specification.

ID082919 Non-Confidential

Contents

AMBA 5 CHI Architecture Specification

Preface

About this specification ................................................................................................ x

Feedback ................................................................................................................... xv

Chapter 1 Introduction

1.1 Architecture overview ............................................................................................. 1-18

1.2 Topology ................................................................................................................ 1-20

1.3 Terminology ........................................................................................................... 1-21

1.4 Transaction classification ....................................................................................... 1-23

1.5 Coherence overview .............................................................................................. 1-25

1.6 Component naming ................................................................................................ 1-27

1.7 Read data source ................................................................................................... 1-29

Chapter 2 Transactions

2.1 Channels overview ................................................................................................. 2-32

2.2 Channel fields ........................................................................................................ 2-33

2.3 Transaction structure ............................................................................................. 2-39

2.4 Transaction identifier fields .................................................................................... 2-73

2.5 Details of transaction identifier fields ..................................................................... 2-74

2.6 Transaction identifier field flows ............................................................................. 2-77

2.7 Logical Processor Identifier .................................................................................... 2-98

2.8 Ordering ................................................................................................................. 2-99

2.9 Address, Control, and Data .................................................................................. 2-109

2.10 Data transfer ........................................................................................................ 2-118

2.11 Request Retry ...................................................................................................... 2-129

Chapter 3 Network Layer

3.1 System address map ........................................................................................... 3-134

3.2 Node ID ................................................................................................................ 3-135

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