ARM® CoreLink™ CCI-400 Cache Coherent Interconnect Technical Reference Manual

Revision: r1p2

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 CoreLink Cache Coherent Interconnect
1.2. Compliance
1.3. Features
1.4. Interfaces
1.5. Configurable options
1.6. Test features
1.7. Product documentation, design flow, and architecture
1.7.1. Documentation
1.7.2. Design flow
1.8. Product revisions
2. Functional Description
2.1. About the functions
2.2. Snoop connectivity and control
2.2.1. Removing a master from the coherent domain
2.3. Speculative fetch
2.4. Performance Monitoring Unit
2.4.1. PMU event list
2.4.2. PMU registers
2.4.3. Using the PMU
2.5. Security
2.5.1. Internal programmers view
2.5.2. Non-TrustZone-aware masters made secure
2.5.3. Security of master interfaces
2.5.4. Security and the PMU
2.6. Error responses
2.6.1. Imprecise errors
2.7. Cache maintenance operations
2.8. Barriers
2.9. Exclusive accesses
2.10. DVM messages
2.11. Quality of Service
2.11.1. QoS value
2.11.2. Regulation based on outstanding transactions
2.11.3. QoS programmable registers
2.11.4. QoS Virtual Networks (QVN)
2.12. Clock and reset
2.12.1. Clocking
2.12.2. Reset
3. Programmers Model
3.1. About this programmers model
3.2. Register summary
3.3. Register descriptions
3.3.1. Control Override Register
3.3.2. Speculation Control Register
3.3.3. Secure Access Register
3.3.4. Status Register
3.3.5. Imprecise Error Register
3.3.6. Performance Monitor Control Register (PMCR)
3.3.7. Component and Peripheral ID Registers
3.3.8. Snoop Control Registers
3.3.9. Shareable Override Register
3.3.10. Read Channel QoS Value Override Register
3.3.11. Write Channel QoS Value Override Register
3.3.12. QoS Control Register
3.3.13. Max OT Registers
3.3.14. Regulator Target Registers
3.3.15. QoS Regulator Scale Factor Registers
3.3.16. QoS Range Register
3.3.17. Event Select Register
3.3.18. Event and Cycle Count Registers
3.3.19. Counter Control Registers
3.3.20. Overflow Flag Status Register
3.4. Address map
A. Signal Descriptions
A.1. Signal descriptions
A.1.1. Clock and reset signals
A.1.2. Configuration signals
A.1.3. Debug signals
A.1.4. DFT signal
A.1.5. Slave interface signals
A.1.6. Master interface signals
A.2. Miscellaneous signals
B. Revisions

List of Tables

1. Typographical conventions
2.1. 3-bit source code for events
2.2. 5-bit event codes, sources: slave interfaces S0-S4
2.3. 5-bit event codes, sources: master interfaces M0-M2
2.4. EVNTBUS bit allocation
2.5. Imprecise errors
3.1. Register summary
3.2. Control Override Register
3.3. Speculation Control Register
3.4. Secure Access Register
3.5. Status Register
3.6. Imprecise Error Register
3.7. Performance Monitor Control Register
3.8. Relationship between non-invasive debug enable input, NIDEN, and PMCR register settings
3.9. Component and Peripheral ID registers
3.10. Snoop Control Registers
3.11. Shareable Override Register
3.12. Read Channel QoS Value Override Register
3.13. Write Channel QoS Value Override Register
3.14. QoS Control Register
3.15. Max OT Register
3.16. Regulator Target Register
3.17. QoS Regulator Scale Factor Register
3.18. Mapping of Scale Factor Register value to Regulator scale factor
3.19. QoS Range Register
3.20. Event Select Register
3.21. Counter Control Register bit assignments
3.22. Overflow Flag Status Register
3.23. Decoder mapping
A.1. Clock and reset signals
A.2. Configuration signals
A.3. Debug signals
A.4. DFT signal
A.5. Write address channel signals
A.6. Write data channel signals
A.7. Write data response channel signals
A.8. Read address channel signals
A.9. Read data channel signals
A.10. Coherency address channel signals
A.11. Coherency response channel signals
A.12. Coherency data channel signals, full ACE interfaces, S3 and S4 only
A.13. Acknowledge signals, full ACE interfaces, S3 and S4 only
A.14. Write address channel signals
A.15. Write data channel signals
A.16. Write data response channel signals
A.17. Read address channel signals
A.18. Read data channel signals
A.19. Power control signals, C-channel
A.20. QVN signals
A.21. Miscellaneous signals
B.1. Issue A
B.2. Differences between issue A and issue B
B.3. Differences between issue B and issue C
B.4. Differences between issue C and issue D
B.5. Differences between issue D and issue E
B.6. Differences between issue E and issue F
B.7. Differences between issue F and issue G
B.8. Differences between issue G and issue H

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Neither the whole nor any part of the information contained in, or the product described in, this document may be adapted or reproduced in any material form except with the prior written permission of the copyright holder.

The product described in this document is subject to continuous developments and improvements. All particulars of the product and its use contained in this document are given by ARM in good faith. However, all warranties implied or expressed, including but not limited to implied warranties of merchantability, or fitness for purpose, are excluded.

This document is intended only to assist the reader in the use of the product. ARM 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.

Where the term ARM is used it means “ARM or any of its subsidiaries as appropriate”.

Confidentiality Status

This document is Non-Confidential. The right to use, copy and disclose this document may be subject to license restrictions in accordance with the terms of the agreement entered into by ARM and the party that ARM delivered this document to.

Product Status

The information in this document is final, that is for a developed product.

Revision History
Revision A16 May 2011First release for r0p0.
Revision B07 July 2011First release for r0p1.
Revision C16 September 2011First release for r0p2.
Revision D12 March 2012First release for r0p3.
Revision E13 September 2012First release for r0p4.
Revision F25 September 2012First release for r1p0.
Revision G16 November 2012First release for r1p1.
Revision H18 June 2013First release for r1p2.
Copyright © 2011-2013 ARM. All rights reserved.ARM DDI 0470H