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2024年4月28日发(作者：机原)

EDID规范

制作人：张杰 2015.9.2

EDID规范 ........................................................................................................................................ 1

目录........................................................................................................................................... 1

一、 EDID综述 .............................................................................................................................. 2

二、 EDID主块详解 ...................................................................................................................... 2

1. EDID主块结构 .................................................................................................................... 2

2. Header: .................................................................................................................................. 3

3. Vendor / Product Identification ............................................................................................. 3

4. EDID Structure Version / Revision ....................................................................................... 4

5. Basic Display Parameters / Features ..................................................................................... 4

6. Color Characteristics ............................................................................................................. 5

7. Established Timings .............................................................................................................. 5

8. Standard Timing Identification .............................................................................................. 6

9. Detailed Timing Descriptions(DTD) ..................................................................................... 6

10. Extension Flag ..................................................................................................................... 9

11. Checksum ............................................................................................................................ 9

三、 EDID扩展块（CEA-861D）详解 ...................................................................................... 10

1. CEA-861D（HDMI）结构 ................................................................................................ 10

2. Tag ....................................................................................................................................... 10

3. Revision ............................................................................................................................. 10

4. 数字信号特性 .................................................................................................................... 10

5. Data Blocks（各功能块参数设置） ............................................................................... 11

6. Detailed Timing Descriptions(DTD) ................................................................................... 15

7. Padding（保留字节） ........................................................................................................ 15

8. Checksum ............................................................................................................................ 15

一、EDID综述

EDID: Extended Display Identification Data (外部显示设备标识数据)----指DDC

通讯中传输的显示设备数据。

版本演变过程：Version:1.0 -> Version 1.1 -> Version 1.2 -> Version 1.3 -> Version

2.0

VGA、DVI的EDID由主块128字节组成，HDMI的EDID增加扩展块(128字节)，扩展块

数据规范按照CEA-861x标准定义。

二、EDID主块详解

1. EDID主块结构