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