- •AMBA
- •Contents
- •List of Tables
- •List of Figures
- •Preface
- •About this document
- •Intended audience
- •Using this specification
- •Conventions
- •Typographical
- •Timing diagrams
- •Signals
- •Further reading
- •ARM publications
- •Feedback
- •Feedback on this product
- •Feedback on this specification
- •Introduction
- •1.1 About the AXI protocol
- •1.2 Architecture
- •1.2.1 Channel definition
- •Read and write address channels
- •Read data channel
- •Write data channel
- •Write response channel
- •1.2.2 Interface and interconnect
- •1.2.3 Register slices
- •1.3 Basic transactions
- •1.3.1 Read burst example
- •1.3.2 Overlapping read burst example
- •1.3.3 Write burst example
- •1.3.4 Transaction ordering
- •1.4 Additional features
- •Signal Descriptions
- •2.1 Global signals
- •2.2 Write address channel signals
- •2.3 Write data channel signals
- •2.4 Write response channel signals
- •2.5 Read address channel signals
- •2.6 Read data channel signals
- •Channel Handshake
- •3.1 Handshake process
- •3.1.1 Write address channel
- •3.1.2 Write data channel
- •3.1.3 Write response channel
- •3.1.4 Read address channel
- •3.1.5 Read data channel
- •3.2 Relationships between the channels
- •3.3 Dependencies between channel handshake signals
- •Addressing Options
- •4.1 About addressing options
- •4.2 Burst length
- •4.3 Burst size
- •4.4 Burst type
- •4.4.1 Fixed burst
- •4.4.2 Incrementing burst
- •4.4.3 Wrapping burst
- •4.5 Burst address
- •Additional Control Information
- •5.1 Cache support
- •5.2 Protection unit support
- •Atomic Accesses
- •6.1 About atomic accesses
- •6.2 Exclusive access
- •6.2.1 Exclusive access process
- •6.2.2 Exclusive access from the perspective of the master
- •6.2.3 Exclusive access from the perspective of the slave
- •6.2.4 Exclusive access restrictions
- •6.2.5 Slaves that do not support exclusive access
- •6.3 Locked access
- •Response Signaling
- •7.1 About response signaling
- •7.2 Response types
- •7.2.1 Normal access success
- •7.2.2 Exclusive access
- •7.2.3 Slave error
- •7.2.4 Decode error
- •Ordering Model
- •8.1 About the ordering model
- •8.2 Transfer ID fields
- •8.3 Read ordering
- •8.4 Normal write ordering
- •8.5 Write data interleaving
- •8.6 Read and write interaction
- •8.7 Interconnect use of ID fields
- •8.8 Recommended width of ID fields
- •Data Buses
- •9.1 About the data buses
- •9.2 Write strobes
- •9.3 Narrow transfers
- •9.4 Byte invariance
- •Unaligned Transfers
- •10.1 About unaligned transfers
- •10.2 Examples
- •Clock and Reset
- •11.1 Clock and reset requirements
- •11.1.1 Clock
- •11.1.2 Reset
- •Low-power Interface
- •12.2.4 Clock control sequence summary
- •Index
AMBA® AXI Protocol
v1.0
Specification
Copyright © 2003, 2004 ARM Limited. All rights reserved.
ARM IHI 0022B
AMBA AXI Protocol
Specification
Copyright © 2003, 2004 ARM Limited. All rights reserved.
Release Information
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Date |
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June, 2003 |
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First release |
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March 2004 |
B |
Define read and write address channels |
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This document is intended only to assist the reader in the use of the product. ARM Limited shall not be liable for any loss or damage arising from the use of any information in this document, or any error or omission in such information, or any incorrect use of the product.
AMBA Specification License
1.Subject to the provisions of Clauses 2 and 3, ARM hereby grants to LICENSEE a perpetual, non-exclusive, nontransferable, royalty free, worldwide licence to use and copy the AMBA Specification for the purpose of developing, having developed, manufacturing, having manufactured, offering to sell, selling, supplying or otherwise distributing products which comply with the AMBA Specification.
2.THE AMBA SPECIFICATION IS PROVIDED “AS IS” WITH NO WARRANTIES EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT LIMITED TO ANY WARRANTY OF SATISFACTORY QUALITY, MERCHANTABILITY, NONINFRINGEMENT OR FITNESS FOR A PARTICULAR PURPOSE.
3. No licence, express, implied or otherwise, is granted to LICENSEE, under the provisions of Clause 1, to use the ARM tradename, or AMBA trademark in connection with the AMBA Specification or any products based thereon. Nothing in Clause 1 shall be construed as authority for LICENSEE to make any representations on behalf of ARM in respect of the AMBA Specification.
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Copyright © 2003, 2004 ARM Limited. All rights reserved. |
ARM IHI 0022B |
Confidentiality Status
This document is Open Access. This document has no restriction on distribution.
Product Status
The information in this document is Final (information on a developed product).
Web Address
http://www.arm.com
ARM IHI 0022B |
Copyright © 2003, 2004 ARM Limited. All rights reserved. |
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Copyright © 2003, 2004 ARM Limited. All rights reserved. |
ARM IHI 0022B |