Preface

About this document

This is the AMBA AXI Protocol Specification v1.0. This issue supersedes the previous r0p0 version of the specification.

Intended audience

This specification is written to help hardware and software engineers who want to become familiar with the Advanced Microcontroller Bus Architecture (AMBA) and design systems and modules that are compatible with the AXI protocol.

Using this specification

This specification is organized into the following chapters:

Chapter 1 Introduction

Read this chapter to learn about the AXI protocol architecture and the basic transactions that it defines.

Chapter 2 Signal Descriptions

Refer to this chapter for definitions of the AXI global, write address channel, write data channel, write response channel, read address channel, read data channel, and low-power interface signals.

Chapter 3 Channel Handshake

Read this chapter to learn about the AXI channel handshake process.

Chapter 4 Addressing Options

Read this chapter to learn about AXI burst types and how to calculate addresses and byte lanes for transfers within a burst.

Chapter 5 Additional Control Information

Read this chapter to learn how to use the AXI protocol to support system level caches and protection units.

Chapter 6 Atomic Accesses

Read this chapter to learn how to perform exclusive accesses and locked accesses.

Chapter 7 Response Signaling

Read this chapter to learn about the four transaction responses of AXI slaves.