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《MIPI_DDB_specification_v00-82-01.pdf》文件是关于MIPI联盟发布的设备描述块(Device Descriptor Block,简称DDB)规格书的详细文档，版本为0.82.01，发布日期为2008年10月30日。这份文档由MIPI联盟董事会于2008年10月29日批准，并预计随着DDB工作组的工作进展，该文档还会有进一步的技术变更。 ### MIPI联盟与DDB规范 MIPI（Mobile Industry Processor Interface）联盟成立于2003年，旨在定义并推广手机和移动设备内部接口的标准化规范，以促进硬件和软件组件之间的互操作性，减少设计复杂性和成本，加速产品上市时间。MIPI规范覆盖了各种接口技术，包括显示、摄像头、音频、触控、处理器间通信等，而DDB则是其中一项关键的规范之一。 #### 设备描述块（DDB）设备描述块（DDB）是一种用于存储和传输有关设备配置、能力和状态的信息的数据结构。在MIPI标准中，DDB的作用在于提供一个统一的框架，使系统能够识别连接到其上的不同设备的特性，从而进行适当的初始化和配置。这对于移动设备中使用的复杂多变的组件尤其重要，因为每个组件可能有自己独特的功能和需求。 DDB规范详细规定了数据结构的格式、字段含义以及如何使用这些信息来实现设备的正确识别和管理。它包括但不限于以下内容： 1. **基本信息**：如设备类型、制造商、产品名称等。 2. **能力信息**：设备支持的功能集，例如分辨率、帧率、数据传输速率等。 3. **状态信息**：当前设备的状态，如是否正在使用、是否有故障等。 4. **控制信息**：用于控制设备的操作指令集合，如开启、关闭、调整参数等。通过DDB，系统可以自动检测并适应连接的设备，无需用户或开发者手动配置复杂的参数，大大简化了设备的集成和使用过程，提高了用户体验和开发效率。 ### 版权声明与免责声明文档开头明确指出，所有材料受版权法保护，不得在未经MIPI联盟明确书面许可的情况下复制、重新出版、分发、传输、显示、广播或以任何其他方式利用。此外，文档中包含了免责声明，强调该材料的提供者（包括作者、开发者和MIPI联盟）不对材料中的信息或内容提供任何形式的保证，包括但不限于适销性、特定用途的适用性、准确性或完整性、结果、工艺质量、无病毒和无过失等。这意味着使用这些材料的风险完全由使用者承担，且在任何情况下，材料的作者、开发者或MIPI联盟均不对第三方因获取替代商品或服务的成本、利润损失、使用损失、数据丢失或任何间接、后果性损害承担责任。《MIPI_DDB_specification_v00-82-01.pdf》是一份重要的技术规范文档，详细阐述了设备描述块（DDB）的设计原理、数据结构和使用方法，对于理解MIPI标准体系和实现移动设备中硬件组件的高效管理具有重要意义。同时，文档中包含的版权和免责声明提醒用户在使用这些技术规范时应谨慎行事，确保合法合规地利用这些资源。

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Version 0.82.01 30-Oct-2008 MIPI Alliance Specification for DDB

MIPI Alliance Member Confidential.

MIPI Alliance Specification for

Device Descriptor Block (DDB)

Version 0.82.01 – 30 October 2008

MIPI Board Approved 29-Oct-2008

Further technical changes to this document are expected as work continues in the DDB Working Group

Version 0.82.01 30-Oct-2008 MIPI Alliance Specification for DDB

MIPI Alliance Member Confidential.

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 0.82.01 30-Oct-2008 MIPI Alliance Specification for DDB

MIPI Alliance Member Confidential.

iii

Contents 42

Version 0.82.01 – 30 October 2008 .................................................................................................................. i

43

 Introduction ............................................................................................................................................. 744

1.1

 Scope ............................................................................................................................................... 745

1.2

 Purpose ............................................................................................................................................ 746

 Terminology (informative) ...................................................................................................................... 847

2.1

 Definitions ....................................................................................................................................... 848

2.2

 Service Primitive Naming ............................................................................................................... 949

2.3

 Acronyms ........................................................................................................................................ 950

 References ............................................................................................................................................. 1151

 Architecture Overview (informative) .................................................................................................... 1252

 DDB Services ........................................................................................................................................ 1453

5.1

 Generic Service Elements .............................................................................................................. 1454

5.1.1

 General Service Parameters ................................................................................................... 1455

5.1.2

 Error Reporting ...................................................................................................................... 1656

5.2

 DDB Level 1 Service ..................................................................................................................... 1657

5.2.1

 DDB Level 1 Specific Service Parameter .............................................................................. 1658

5.2.2

 GET-DDB-LEVEL1 SAP ..................................................................................................... 1759

5.3

 DDB Level 2 Services ................................................................................................................... 2060

5.3.1

 DDB Level 2 Data Model ...................................................................................................... 2061

5.3.2

 DDB Level 2 Specific Service Parameters ............................................................................ 2262

5.3.3

 GET-DDB-LEVEL2 SAP ..................................................................................................... 2363

5.3.4

 SET-DDB-LEVEL2 SAP ...................................................................................................... 2764

 DDB Protocol ........................................................................................................................................ 3165

6.1

 Generic Protocol Elements ............................................................................................................ 3166

6.1.1

 Requestor and Provider Protocol Model ................................................................................ 3167

6.1.2

 Underlying Interconnect Requirements ................................................................................. 3268

Version 0.82.01 30-Oct-2008 MIPI Alliance Specification for DDB

MIPI Alliance Member Confidential.

Figures 81

Figure 1 Devices on an Interconnect ............................................................................................................ 12

82

Figure 2 Mapping DDB to MIPI

Interfaces .................................................................................................. 1283

Figure 3 DDB Layer Overview .................................................................................................................... 13

84

Figure 4 Service Primitives a

nd Roles.......................................................................................................... 1385

Figure 5 ResultCode Form

at......................................................................................................................... 1586

Figure 6 Level 2 Data Model and

Mapping Example .................................................................................. 2287

Figure 7 Service Primitive to Prot

ocol Relationship .................................................................................... 3188

Figure 8 DDB-PDU Format ......................................................................................................................... 32

89

Figure 9 GET-DDB-LEVEL1 Response Mes

sage Payload Format ............................................................. 3590

Figure 10 GET-DDB-LEVEL2 Request Mes

sage Payload Format ............................................................. 3691

Figure 11 GET-DDB-LEVEL2 Response

Message Payload Format ........................................................... 3692

Figure 12 SET-DDB-LEVEL2 Request Mes

sage Payload Format .............................................................. 3793

Figure 13 SET-DDB-LEVEL2 Response

Message Payload Format ............................................................ 3794

Figure 14 DDB Error Flow ........................................................................................................................... 39

95

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terminalnt

2015-02-06

MIPI Alliance Specification for Device Descriptor Block (DDB) Version 0.82.01 – 30 October 2008 MIPI协议作者的水平简直是渣渣。

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