Cortex™-A9 NEON™ Media Processing Engine Technical Reference Manual

Revision: r4p1

Table of Contents

About this book
Product revision status
Intended audience
Using this book
Additional reading
Feedback on this product
Feedback on content
1. Introduction
1.1. About the Cortex-A9 NEON MPE
1.1.1. VFPv3 architecture hardware support
1.2. Applications
1.3. Product revisions
2. Programmers Model
2.1. About this programmers model
2.1.1. Advanced SIMD and VFP feature identification registers
2.1.2. Enabling Advanced SIMD and floating-point support
2.2. New Advanced SIMD and VFP features
2.2.1. Half-precision floating-point value conversion
2.2.2. Independent Advanced SIMD and VFP disable
2.2.3. Dynamically configurable VFP register bank size
2.3. Supported formats
2.4. Advanced SIMD and VFP register access
2.4.1. Coprocessor Access Control Register
2.4.2. Non-secure Access Control Register
2.5. Register summary
2.6. Register descriptions
2.6.1. Floating-Point System ID Register
2.6.2. Floating-Point Status and Control Register
2.6.3. Floating-Point Exception Register
3. Instruction Timing
3.1. About instruction cycle timing
3.2. Writing optimal VFP and Advanced SIMD code
3.3. Cortex-A9 NEON MPE instructions
3.4. Instruction-specific scheduling
3.4.1. Instruction timing tables
3.4.2. VFP instruction timing
3.4.3. VFP load and store instruction timing
3.4.4. Advanced SIMD integer arithmetic instructions
3.4.5. Advanced SIMD integer multiply instructions
3.4.6. Advanced SIMD integer shift instructions
3.4.7. Advanced SIMD permute instructions
3.4.8. Advanced SIMD floating-point instructions
3.4.9. Advanced SIMD load-store instructions
3.4.10. Inter-pipeline data-transfers
A. Revisions

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Product Status

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Revision History
Revision A04 April 2008First release for r0p0
Revision B10 July 2008Second release for r0p0
Revision C12 Dec 2008First release for r1p0
Revision D24 September 2009First release for r2p0
Revision E27 November 2009Second release for r2p0
Revision F27 April 2010First release for r2p2
Revision G21 July 2011First release for r3p0
Revision H26 March 2012First release for r4p0
Revision I15 June 2012First release for r4p1
Copyright © 2008-2012 ARM. All rights reserved.ARM DDI 0409I