AMBA协议手册

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【核心代码】

Contents
AMBA Specification (Rev 2.0)
Preface
About this specification ................................................................................ viii
Feedback ....................................................................................................... xi
Chapter 1 Introduction to the AMBA Buses
1.1 Overview of the AMBA specification ........................................................... 1-2
1.2 Objectives of the AMBA specification ......................................................... 1-3
1.3 A typical AMBA-based microcontroller ........................................................ 1-4
1.4 Terminology ................................................................................................ 1-6
1.5 Introducing the AMBA AHB ......................................................................... 1-7
1.6 Introducing the AMBA ASB ......................................................................... 1-9
1.7 Introducing the AMBA APB ....................................................................... 1-10
1.8 Choosing the right bus for your system ..................................................... 1-12
1.9 Notes on the AMBA specification .............................................................. 1-14
Chapter 2 AMBA Signals
2.1 AMBA signal names .................................................................................... 2-2
2.2 AMBA AHB signal list .................................................................................. 2-3
2.3 AMBA ASB signal list .................................................................................. 2-6
2.4 AMBA APB signal list .................................................................................. 2-8
Contents
iv Copyright © 1999 ARM Limited. All rights reserved. ARM IHI 0011A
Chapter 3 AMBA AHB
3.1 About the AMBA AHB ................................................................................. 3-3
3.2 Bus interconnection .................................................................................... 3-4
3.3 Overview of AMBA AHB operation ............................................................. 3-5
3.4 Basic transfer .............................................................................................. 3-6
3.5 Transfer type .............................................................................................. 3-9
3.6 Burst operation ......................................................................................... 3-11
3.7 Control signals .......................................................................................... 3-17
3.8 Address decoding ..................................................................................... 3-19
3.9 Slave transfer responses .......................................................................... 3-20
3.10 Data buses ............................................................................................... 3-25
3.11 Arbitration ................................................................................................. 3-28
3.12 Split transfers ............................................................................................ 3-35
3.13 Reset ........................................................................................................ 3-40
3.14 About the AHB data bus width .................................................................. 3-41
3.15 Implementing a narrow slave on a wider bus ........................................... 3-42
3.16 Implementing a wide slave on a narrow bus ............................................ 3-43
3.17 About the AHB AMBA components .......................................................... 3-44
3.18 AHB bus slave .......................................................................................... 3-45
3.19 AHB bus master ....................................................................................... 3-49
3.20 AHB arbiter ............................................................................................... 3-53
3.21 AHB decoder ............................................................................................ 3-57
Chapter 4 AMBA ASB
4.1 About the AMBA ASB ................................................................................. 4-2
4.2 AMBA ASB description ............................................................................... 4-4
4.3 ASB transfers ............................................................................................. 4-6
4.4 Address decode ........................................................................................ 4-13
4.5 Transfer response .................................................................................... 4-15
4.6 Multi-master operation .............................................................................. 4-18
4.7 Reset operation ........................................................................................ 4-22
4.8 Description of ASB signals ....................................................................... 4-24
4.9 About the ASB AMBA components .......................................................... 4-44
4.10 ASB bus slave .......................................................................................... 4-45
4.11 ASB bus master ........................................................................................ 4-50
4.12 ASB decoder ............................................................................................ 4-61
4.13 ASB arbiter ............................................................................................... 4-69
Chapter 5 AMBA APB
5.1 About the AMBA APB ................................................................................. 5-2
5.2 APB specification ........................................................................................ 5-4
5.3 About the APB AMBA components ............................................................ 5-7
5.4 APB bridge ................................................................................................. 5-8
5.5 APB slave ................................................................................................. 5-11
5.6 Interfacing APB to AHB ............................................................................ 5-14
5.7 Interfacing APB to ASB ............................................................................ 5-20
5.8 Interfacing rev D APB peripherals to rev 2.0 APB .................................... 5-22
Contents
ARM IHI 0011A Copyright © 1999 ARM Limited. All rights reserved. v
Chapter 6 AMBA Test Methodology
6.1 About the AMBA test interface .................................................................... 6-2
6.2 External interface ........................................................................................ 6-4
6.3 Test vector types ......................................................................................... 6-6
6.4 Test interface controller .............................................................................. 6-7
6.5 The AHB Test Interface Controller ............................................................ 6-11
6.6 Example AMBA AHB test sequences ....................................................... 6-16
6.7 The ASB test interface controller .............................................................. 6-23
6.8 Example AMBA ASB test sequences ........................................................ 6-25
Contents