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MIPI_CSI-2_specification_V1-1
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Copyright © 2005-2013 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
MIPI
®
Alliance Specification for
Camera Serial Interface 2 (CSI-2)
Version 1.1 – 18 July 2012
MIPI Board Approved 22-Jan-2013
Further technical changes to this document are expected as work continues in the Camera Working Group.
Version 1.1 MIPI Alliance Specification for CSI-2
18-Jul-2012
Copyright © 2005-2013 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
ii
NOTICE OF DISCLAIMER 1
The material contained herein is not a license, either expressly or impliedly, to any IPR owned or controlled 2
by any of the authors or developers of this material or MIPI
®
. The material contained herein is provided on 3
an “AS IS” basis and to the maximum extent permitted by applicable law, this material is provided AS IS 4
AND WITH ALL FAULTS, and the authors and developers of this material and MIPI hereby disclaim all 5
other warranties and conditions, either express, implied or statutory, including, but not limited to, any (if 6
any) implied warranties, duties or conditions of merchantability, of fitness for a particular purpose, of 7
accuracy or completeness of responses, of results, of workmanlike effort, of lack of viruses, and of lack of 8
negligence. 9
All materials contained herein are protected by copyright laws, and may not be reproduced, republished, 10
distributed, transmitted, displayed, broadcast or otherwise exploited in any manner without the express 11
prior written permission of MIPI Alliance. MIPI, MIPI Alliance and the dotted rainbow arch and all related 12
trademarks, tradenames, and other intellectual property are the exclusive property of MIPI Alliance and 13
cannot be used without its express prior written permission. 14
ALSO, THERE IS NO WARRANTY OF CONDITION OF TITLE, QUIET ENJOYMENT, QUIET 15
POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT WITH REGARD 16
TO THIS MATERIAL OR THE CONTENTS OF THIS DOCUMENT. IN NO EVENT WILL ANY 17
AUTHOR OR DEVELOPER OF THIS MATERIAL OR THE CONTENTS OF THIS DOCUMENT OR 18
MIPI BE LIABLE TO ANY OTHER PARTY FOR THE COST OF PROCURING SUBSTITUTE 19
GOODS OR SERVICES, LOST PROFITS, LOSS OF USE, LOSS OF DATA, OR ANY INCIDENTAL, 20
CONSEQUENTIAL, DIRECT, INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER 21
CONTRACT, TORT, WARRANTY, OR OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR 22
ANY OTHER AGREEMENT, SPECIFICATION OR DOCUMENT RELATING TO THIS MATERIAL, 23
WHETHER OR NOT SUCH PARTY HAD ADVANCE NOTICE OF THE POSSIBILITY OF SUCH 24
DAMAGES. 25
Without limiting the generality of this Disclaimer stated above, the user of the contents of this Document is 26
further notified that MIPI: (a) does not evaluate, test or verify the accuracy, soundness or credibility of the 27
contents of this Document; (b) does not monitor or enforce compliance with the contents of this Document; 28
and (c) does not certify, test, or in any manner investigate products or services or any claims of compliance 29
with the contents of this Document. The use or implementation of the contents of this Document may 30
involve or require the use of intellectual property rights (“IPR”) including (but not limited to) patents, 31
patent applications, or copyrights owned by one or more parties, whether or not Members of MIPI. MIPI 32
does not make any search or investigation for IPR, nor does MIPI require or request the disclosure of any 33
IPR or claims of IPR as respects the contents of this Document or otherwise. 34
Questions pertaining to this document, or the terms or conditions of its provision, should be addressed to: 35
MIPI Alliance, Inc. 36
c/o IEEE-ISTO 37
445 Hoes Lane 38
Piscataway, NJ 08854 39
Attn: Board Secretary 40
Version 1.1 MIPI Alliance Specification for CSI-2
18-Jul-2012
Copyright © 2005-2013 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
iii
Contents 41
Version 1.1 – 18 July 2012 ............................................................................................................................... i
42
1
Overview ............................................................................................................................................... 13 43
1.1
Scope ............................................................................................................................................. 13 44
1.2
Purpose .......................................................................................................................................... 13 45
2
Terminology .......................................................................................................................................... 14 46
2.1
Definitions ..................................................................................................................................... 14 47
2.2
Abbreviations ................................................................................................................................ 15 48
2.3
Acronyms ...................................................................................................................................... 15 49
3
References ............................................................................................................................................. 17 50
4
Overview of CSI-2 ................................................................................................................................ 18 51
5
CSI-2 Layer Definitions ........................................................................................................................ 19 52
6
Camera Control Interface (CCI) ............................................................................................................ 21 53
6.1
Data Transfer Protocol .................................................................................................................. 21 54
6.1.1
Message Type ........................................................................................................................ 21 55
6.1.2
Read/Write Operations .......................................................................................................... 22 56
6.2
CCI Slave Addresses ..................................................................................................................... 25 57
6.3
CCI Multi-Byte Registers .............................................................................................................. 25 58
6.3.1
Overview ............................................................................................................................... 25 59
6.3.2
The Transmission Byte Order for Multi-byte Register Values .............................................. 27 60
6.3.3
Multi-Byte Register Protocol ................................................................................................. 28 61
6.4
Electrical Specifications and Timing for I/O Stages ..................................................................... 32 62
7
Physical Layer ....................................................................................................................................... 35 63
8
Multi-Lane Distribution and Merging ................................................................................................... 36
64
8.1
Multi-Lane Interoperability ........................................................................................................... 40 65
9
Low Level Protocol ............................................................................................................................... 43 66
9.1
Low Level Protocol Packet Format ............................................................................................... 43 67
9.1.1
Low Level Protocol Long Packet Format .............................................................................. 43 68
9.1.2
Low Level Protocol Short Packet Format .............................................................................. 45 69
9.2
Data Identifier (DI) ........................................................................................................................ 45 70
9.3
Virtual Channel Identifier .............................................................................................................. 45 71
9.4
Data Type (DT) ............................................................................................................................. 46 72
9.5
Packet Header Error Correction Code ........................................................................................... 47 73
9.5.1
General Hamming Code Applied to Packet Header .............................................................. 48 74
9.5.2
Hamming-modified Code ...................................................................................................... 48 75
9.5.3
ECC Generation on TX Side ................................................................................................. 51 76
Version 1.1 MIPI Alliance Specification for CSI-2
18-Jul-2012
Copyright © 2005-2013 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
iv
9.5.4
Applying ECC on RX Side .................................................................................................... 52 77
9.6
Checksum Generation ................................................................................................................... 53 78
9.7
Packet Spacing .............................................................................................................................. 55 79
9.8
Synchronization Short Packet Data Type Codes ........................................................................... 56 80
9.8.1
Frame Synchronization Packets ............................................................................................. 56 81
9.8.2
Line Synchronization Packets ................................................................................................ 57 82
9.9
Generic Short Packet Data Type Codes ......................................................................................... 57 83
9.10
Packet Spacing Examples .............................................................................................................. 58 84
9.11
Packet Data Payload Size Rules .................................................................................................... 60 85
9.12
Frame Format Examples ................................................................................................................ 61 86
9.13
Data Interleaving ........................................................................................................................... 63 87
9.13.1
Data Type Interleaving .......................................................................................................... 63 88
9.13.2
Virtual Channel Identifier Interleaving .................................................................................. 66 89
10
Color Spaces ...................................................................................................................................... 68 90
10.1
RGB Color Space Definition ......................................................................................................... 68 91
10.2
YUV Color Space Definition ........................................................................................................ 68 92
11
Data Formats ..................................................................................................................................... 69 93
11.1
Generic 8-bit Long Packet Data Types .......................................................................................... 70 94
11.1.1
Null and Blanking Data ......................................................................................................... 70 95
11.1.2
Embedded Information .......................................................................................................... 70 96
11.2
YUV Image Data ........................................................................................................................... 71 97
11.2.1
Legacy YUV420 8-bit ........................................................................................................... 72 98
11.2.2
YUV420 8-bit ........................................................................................................................ 74 99
11.2.3
YUV420 10-bit ...................................................................................................................... 76 100
11.2.4
YUV422 8-bit ........................................................................................................................ 78 101
11.2.5
YUV422 10-bit ...................................................................................................................... 80 102
11.3
RGB Image Data ........................................................................................................................... 81 103
11.3.1
RGB888 ................................................................................................................................. 82 104
11.3.2
RGB666 ................................................................................................................................. 83 105
11.3.3
RGB565 ................................................................................................................................. 84 106
11.3.4
RGB555 ................................................................................................................................. 85 107
11.3.5
RGB444 ................................................................................................................................. 86 108
11.4
RAW Image Data .......................................................................................................................... 86 109
11.4.1
RAW6 .................................................................................................................................... 87 110
11.4.2
RAW7 .................................................................................................................................... 88 111
11.4.3
RAW8 .................................................................................................................................... 89 112
11.4.4
RAW10 .................................................................................................................................. 90 113
Version 1.1 MIPI Alliance Specification for CSI-2
18-Jul-2012
Copyright © 2005-2013 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
v
11.4.5
RAW12 .................................................................................................................................. 91 114
11.4.6
RAW14 .................................................................................................................................. 92 115
11.5
User Defined Data Formats ........................................................................................................... 93 116
12
Recommended Memory Storage ....................................................................................................... 95 117
12.1
General/Arbitrary Data Reception ................................................................................................. 95 118
12.2
RGB888 Data Reception ............................................................................................................... 96 119
12.3
RGB666 Data Reception ............................................................................................................... 96 120
12.4
RGB565 Data Reception ............................................................................................................... 97 121
12.5
RGB555 Data Reception ............................................................................................................... 97 122
12.6
RGB444 Data Reception ............................................................................................................... 98 123
12.7
YUV422 8-bit Data Reception ...................................................................................................... 98 124
12.8
YUV422 10-bit Data Reception .................................................................................................... 99 125
12.9
YUV420 8-bit (Legacy) Data Reception ....................................................................................... 99 126
12.10
YUV420 8-bit Data Reception ................................................................................................ 101 127
12.11
YUV420 10-bit Data Reception .............................................................................................. 102 128
12.12
RAW6 Data Reception ............................................................................................................ 103 129
12.13
RAW7 Data Reception ............................................................................................................ 103 130
12.14
RAW8 Data Reception ............................................................................................................ 104 131
12.15
RAW10 Data Reception .......................................................................................................... 104 132
12.16
RAW12 Data Reception .......................................................................................................... 105 133
12.17
RAW14 Data Reception .......................................................................................................... 105 134
Annex A
JPEG8 Data Format (informative) ........................................................................................... 106 135
A.1
Introduction ................................................................................................................................. 106 136
A.2
JPEG Data Definition .................................................................................................................. 107 137
A.3
Image Status Information ............................................................................................................ 107 138
A.4
Embedded Images ....................................................................................................................... 109 139
A.5
JPEG8 Non-standard Markers ..................................................................................................... 110 140
A.6
JPEG8 Data Reception ................................................................................................................ 110 141
Annex B
CSI-2 Implementation Example (informative) ........................................................................ 111 142
B.1
Overview ..................................................................................................................................... 111 143
B.2
CSI-2 Transmitter Detailed Block Diagram ................................................................................ 111 144
B.3
CSI-2 Receiver Detailed Block Diagram .................................................................................... 112 145
B.4
Details on the D-PHY implementation ........................................................................................ 113 146
B.4.1
CSI-2 Clock Lane Transmitter ............................................................................................. 115 147
B.4.2
CSI-2 Clock Lane Receiver ................................................................................................. 116 148
B.4.3
CSI-2 Data Lane Transmitter ............................................................................................... 117 149
B.4.4
CSI-2 Data Lane Receiver ................................................................................................... 118 150
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