HDMI Connectors

HDMI PlugHDMI (High-Definition Multimedia Interface) is a multi-pin connector for digital video and audio devices. It replaces the analog SCART connector.

HDMI is not format-dependant and can work with all common digital formats.

HDMI 1.3 can transmit uncompressed video at 340Mpixels/second and 8-channel uncompressed digital audio at 192kHz sample rate with 24 bits/sample.

The standard HDMI connector is defined as "Type A" and contains 19 pins (shown in the diagram below). The "Type B" HDMI connector is not yet in production — it is reserved for future higher-resolution devices.

Type A HDMI Connector

Pin   Signal Assignment    Pin   Signal Assignment
1   TMDS Data2+   2   TMDS Data2 Shield
3   TMDS Data2–   4   TMDS Data1+
5   TMDS Data1 Shield   6   TMDS Data1–
7   TMDS Data0+   8   TMDS Data0 Shield
9   TMDS Data0–   10   TMDS Clock+
11   TMDS Clock Shield   12   TMDS Clock–
13   CEC   14   Reserved (N.C. on device)
15   SCL   16   SDA
17   DDC/CEC Ground   18   +5 V Power
19   Hot Plug Detect  


HDMI was developed Hitachi, Matsushita (Panasonic), Philips, Silicon Image, Sony and Toshiba. It was officially released in 2002.

See also...