Version 1.01.00 r0.05 15-Dec-2009 DRAFT MIPI Alliance Specification for CSI-2
Copyright © 2005-2009 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
DRAFT MIPI Alliance Specification for
Camera Serial Interface 2 (CSI-2)
Draft Version 1.01.00 Revision 0.05 – 15 December 2009
Further technical changes to this document are expected as work continues in the Camera Working Group
Version 1.01.00 r0.05 15-Dec-2009 DRAFT MIPI Alliance Specification for CSI-2
Copyright © 2005-2009 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
ii
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Version 1.01.00 r0.05 15-Dec-2009 DRAFT MIPI Alliance Specification for CSI-2
Copyright © 2005-2009 MIPI Alliance, Inc. All rights reserved.
MIPI Alliance Member Confidential.
iii
Contents 41
Draft Version 1.01.00 Revision 0.05 – 15 December 2009..............................................................................i 42
1 Overview ...............................................................................................................................................16 43
1.1 Scope .............................................................................................................................................16 44
1.2 Purpose ..........................................................................................................................................16 45
2 Terminology ..........................................................................................................................................17 46
2.1 Definitions .....................................................................................................................................17 47
2.2 Abbreviations ................................................................................................................................18 48
2.3 Acronyms ......................................................................................................................................18 49
3 References .............................................................................................................................................20 50
4 Overview of CSI-2 ................................................................................................................................21 51
5 CSI-2 Layer Definitions ........................................................................................................................22 52
6 Camera Control Interface (CCI) ............................................................................................................24 53
6.1 Data Transfer Protocol...................................................................................................................24 54
6.1.1 Message Type........................................................................................................................24 55
6.1.2 Read/Write Operations ..........................................................................................................25 56
6.2 CCI Slave Addresses .....................................................................................................................28 57
6.3 CCI Multi-Byte Registers..............................................................................................................28 58
6.3.1 Overview ...............................................................................................................................28 59
6.3.2 The Transmission Byte Order for Multi-byte Register Values..............................................30 60
6.3.3 Multi-Byte Register Protocol.................................................................................................31 61
6.4 Electrical Specifications and Timing for I/O Stages......................................................................35 62
7 Physical Layer .......................................................................................................................................38 63
8 Multi-Lane Distribution and Merging ...................................................................................................39 64
8.1 Multi-Lane Interoperability ...........................................................................................................43 65
9 Low Level Protocol ...............................................................................................................................46 66
9.1 Low Level Protocol Packet Format ...............................................................................................46 67
Version 1.01.00 r0.05 15-Dec-2009 DRAFT MIPI Alliance Specification for CSI-2
Copyright © 2005-2009 MIPI Alliance, Inc. All rights reserved.
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iv
9.1.1 Low Level Protocol Long Packet Format..............................................................................46 68
9.1.2 Low Level Protocol Short Packet Format..............................................................................48 69
9.2 Data Identifier (DI)........................................................................................................................48 70
9.3 Virtual Channel Identifier..............................................................................................................48 71
9.4 Data Type (DT) .............................................................................................................................49 72
9.5 Packet Header Error Correction Code ...........................................................................................50 73
9.5.1 General Hamming Code Applied to Packet Header ..............................................................51 74
9.5.2 Hamming-modified Code ......................................................................................................51 75
9.5.3 ECC Generation on TX Side .................................................................................................54 76
9.5.4 Applying ECC on RX Side....................................................................................................55 77
9.6 Checksum Generation....................................................................................................................56 78
9.7 Packet Spacing...............................................................................................................................58 79
9.8 Synchronization Short Packet Data Type Codes ...........................................................................59 80
9.8.1 Frame Synchronization Packets.............................................................................................59 81
9.8.2 Line Synchronization Packets................................................................................................60 82
9.9 Generic Short Packet Data Type Codes.........................................................................................60 83
9.10 Packet Spacing Examples..............................................................................................................61 84
9.11 Packet Data Payload Size Rules ....................................................................................................63 85
9.12 Frame Format Examples................................................................................................................64 86
9.13 Data Interleaving ...........................................................................................................................66 87
9.13.1 Data Type Interleaving ..........................................................................................................66 88
9.13.2 Virtual Channel Identifier Interleaving..................................................................................69 89
10 Color Spaces......................................................................................................................................71 90
10.1 RGB Color Space Definition.........................................................................................................71 91
10.2 YUV Color Space Definition.........................................................................................................71 92
11 Data Formats .....................................................................................................................................72 93
11.1 Generic 8-bit Long Packet Data Types..........................................................................................73 94
11.1.1 Null and Blanking Data .........................................................................................................73 95
Version 1.01.00 r0.05 15-Dec-2009 DRAFT MIPI Alliance Specification for CSI-2
Copyright © 2005-2009 MIPI Alliance, Inc. All rights reserved.
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v
11.1.2 Embedded Information ..........................................................................................................73 96
11.2 YUV Image Data...........................................................................................................................73 97
11.2.1 Legacy YUV420 8-bit ...........................................................................................................74 98
11.2.2 YUV420 8-bit........................................................................................................................76 99
11.2.3 YUV420 10-bit......................................................................................................................79 100
11.2.4 YUV422 8-bit........................................................................................................................81 101
11.2.5 YUV422 10-bit......................................................................................................................82 102
11.3 RGB Image Data ...........................................................................................................................83 103
11.3.1 RGB888.................................................................................................................................84 104
11.3.2 RGB666.................................................................................................................................85 105
11.3.3 RGB565.................................................................................................................................86 106
11.3.4 RGB555.................................................................................................................................87 107
11.3.5 RGB444.................................................................................................................................88 108
11.4 RAW Image Data ..........................................................................................................................88 109
11.4.1 RAW6....................................................................................................................................89 110
11.4.2 RAW7....................................................................................................................................89 111
11.4.3 RAW8....................................................................................................................................90 112
11.4.4 RAW10..................................................................................................................................91 113
11.4.5 RAW12..................................................................................................................................92 114
11.4.6 RAW14..................................................................................................................................93 115
11.5 User Defined Data Formats ...........................................................................................................94 116
12 Recommended Memory Storage .......................................................................................................97 117
12.1 General/Arbitrary Data Reception.................................................................................................97 118
12.2 RGB888 Data Reception ...............................................................................................................97 119
12.3 RGB666 Data Reception ...............................................................................................................98 120
12.4 RGB565 Data Reception ...............................................................................................................99 121
12.5 RGB555 Data Reception ...............................................................................................................99 122
12.6 RGB444 Data Reception ...............................................................................................................99 123
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