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MIPI Alliance Standard for Camera Serial Interface 2 (CSI-2)

The Camera Serial Interface 2 specification defines an interface between a peripheral device (camera) and a host processor (baseband, application engine).
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Version 1.00 29-Nov-2005 MIPI Alliance Standard for CSI-2
Copyright © 2005 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
i
MIPI Alliance Standard for Camera Serial Interface
2 (CSI-2)
Version 1.00 – 29 November 2005
MIPI Board Approved 29-Nov-2005
Further technical changes to CSI are expected as work continues in the Camera Working Group

Version 1.00 29-Nov-2005 MIPI Alliance Standard for CSI-2
Copyright © 2005 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
ALSO, THERE IS NO WARRANTY OF CONDITION OF TITLE, QUIET ENJOYMENT, QUIET 10
POSSESSION, CORRESPONDENCE TO DESCRIPTION OR NON-INFRINGEMENT WITH REGARD 11
TO THIS MATERIAL OR THE CONTENTS OF THIS DOCUMENT. IN NO EVENT WILL ANY 12
AUTHOR OR DEVELOPER OF THIS MATERIAL OR THE CONTENTS OF THIS DOCUMENT OR 13
MIPI BE LIABLE TO ANY OTHER PARTY FOR THE COST OF PROCURING SUBSTITUTE 14
GOODS OR SERVICES, LOST PROFITS, LOSS OF USE, LOSS OF DATA, OR ANY INCIDENTAL, 15
CONSEQUENTIAL, DIRECT, INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER 16
CONTRACT, TORT, WARRANTY, OR OTHERWISE, ARISING IN ANY WAY OUT OF THIS OR 17
ANY OTHER AGREEMENT, SPECIFICATION OR DOCUMENT RELATING TO THIS MATERIAL, 18
WHETHER OR NOT SUCH PARTY HAD ADVANCE NOTICE OF THE POSSIBILITY OF SUCH 19
DAMAGES. 20
Without limiting the generality of this Disclaimer stated above, the user of the contents of this Document is 21
further notified that MIPI: (a) does not evaluate, test or verify the accuracy, soundness or credibility of the 22
contents of this Document; (b) does not monitor or enforce compliance with the contents of this Document; 23
and (c) does not certify, test, or in any manner investigate products or services or any claims of compliance 24
with the contents of this Document. The use or implementation of the contents of this Document may 25
involve or require the use of intellectual property rights ("IPR") including (but not limited to) patents, 26
patent applications, or copyrights owned by one or more parties, whether or not Members of MIPI. MIPI 27
does not make any search or investigation for IPR, nor does MIPI require or request the disclosure of any 28
IPR or claims of IPR as respects the contents of this Document or otherwise. 29
Questions pertaining to this document, or the terms or conditions of its provision, should be addressed to: 30
MIPI Alliance, Inc. 31
c/o IEEE-ISTO 32
445 Hoes Lane 33
Piscataway, NJ 08854 34
Attn: Board Secretary 35

Version 1.00 29-Nov-2005 MIPI Alliance Standard for CSI-2
Copyright © 2005 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
iii
Contents 36
Version 1.00 – 29 November 2005...................................................................................................................i 37
1 Overview .................................................................................................................................................6 38
1.1 Scope ...............................................................................................................................................6 39
1.2 Purpose ............................................................................................................................................6 40
2 Terminology ............................................................................................................................................7 41
2.1 Definitions .......................................................................................................................................7 42
2.2 Abbreviations ..................................................................................................................................7 43
2.3 Acronyms ........................................................................................................................................8 44
3 References .............................................................................................................................................10 45
4 Overview of CSI-2 ................................................................................................................................11 46
5 CSI-2 Layer Definitions ........................................................................................................................12 47
6 Camera Control Interface (CCI) ............................................................................................................14 48
6.1 Data Transfer Protocol...................................................................................................................14 49
6.2 CCI Slave Addresses .....................................................................................................................18 50
6.3 CCI Multi-Byte Registers..............................................................................................................18 51
6.4 Electrical Specifications and Timing for I/O Stages......................................................................25 52
7 Physical Layer .......................................................................................................................................29 53
8 Multi-Lane Distribution and Merging ...................................................................................................30 54
8.1 Multi-Lane Interoperability ...........................................................................................................34 55
9 Low Level Protocol ...............................................................................................................................37 56
9.1 Low Level Protocol Packet Format ...............................................................................................37 57
9.2 Data Identifier (DI)........................................................................................................................39 58
9.3 Virtual Channel Identifier..............................................................................................................40 59
9.4 Data Type (DT) .............................................................................................................................41 60
9.5 Packet Header Error Correction Code ...........................................................................................42 61
9.6 Checksum Generation....................................................................................................................48 62

Version 1.00 29-Nov-2005 MIPI Alliance Standard for CSI-2
Copyright © 2005 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
iv
9.7 Packet Spacing...............................................................................................................................50 63
9.8 Synchronization Short Packet Data Type Codes ...........................................................................51 64
9.9 Generic Short Packet Data Type Codes.........................................................................................52 65
9.10 Packet Spacing Examples..............................................................................................................53 66
9.11 Packet Data Payload Size Rules ....................................................................................................56 67
9.12 Frame Format Examples................................................................................................................56 68
9.13 Data Interleaving ...........................................................................................................................59 69
10 Color Spaces......................................................................................................................................65 70
10.1 RGB Color Space Definition.........................................................................................................65 71
10.2 YUV Color Space Definition.........................................................................................................65 72
11 Data Formats .....................................................................................................................................66 73
11.1 Generic 8-bit Long Packet Data Types..........................................................................................67 74
11.2 YUV Image Data...........................................................................................................................68 75
11.3 RGB Image Data ...........................................................................................................................78 76
11.4 RAW Image Data ..........................................................................................................................83 77
11.5 User Defined Data Formats ...........................................................................................................90 78
12 Recommended Memory Storage .......................................................................................................93 79
12.1 General/Arbitrary Data Reception.................................................................................................93 80
12.2 RGB888 Data Reception ...............................................................................................................93 81
12.3 RGB666 Data Reception ...............................................................................................................94 82
12.4 RGB565 Data Reception ...............................................................................................................95 83
12.5 RGB555 Data Reception ...............................................................................................................95 84
12.6 RGB444 Data Reception ...............................................................................................................95 85
12.7 YUV422 8-bit Data Reception ......................................................................................................96 86
12.8 YUV422 10-bit Data Reception ....................................................................................................96 87
12.9 YUV420 8-bit (Legacy) Data Reception .......................................................................................97 88
12.10 YUV420 8-bit Data Reception ..................................................................................................98 89
12.11 YUV420 10-bit Data Reception ................................................................................................99 90

Version 1.00 29-Nov-2005 MIPI Alliance Standard for CSI-2
Copyright © 2005 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
v
12.12 RAW6 Data Reception ............................................................................................................101 91
12.13 RAW7 Data Reception ............................................................................................................101 92
12.14 RAW8 Data Reception ............................................................................................................101 93
12.15 RAW10 Data Reception ..........................................................................................................102 94
12.16 RAW12 Data Reception ..........................................................................................................102 95
12.17 RAW14 Data Reception ..........................................................................................................103 96
Annex A (informative) JPEG8 Data Format ...............................................................................................104 97
Annex B (informative) CSI-2 Implementation Example.............................................................................110 98
Annex C (informative) CSI-2 Recommended Receiver Error Behavior .....................................................119 99
Annex D (informative) CSI-2 Sleep Mode..................................................................................................123 100
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