HDMI接口

HDMI：High-Definition Multimedia Interface

属于数字接口，可同时传输音频跟视频信号

目前主流还是HDMI1.4，4K电视上逐渐配有HDMI2.0.

需要知道的是：HDMI2.0向下兼容HDMI1.4

HDMI* includes three separate communications channels: TMDS, DDC, and the optional CEC (consumer electronics control)。

The data and clock channels are used to carry video, audio and auxiliary data.

The DDC is used for configuration and status exchange between a single Source and a single Sink。

The optional CEC protocol provides high-level control functions between all of the various audiovisual products in a user’s environment。

TMDS：

DDC：

HPD：

HDMI根据规格尺寸有不同的pin脚定义：

TYPE-A,TYPE-B,TYPE-C,TYPE-D

如需了解请下载点击下文链接下载：

链接：http://pan.baidu.com/s/1dF2Dwx7 密码：3a7n