VGA Vesa DDC顯示接口

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    VGA 是 Video Graphics Adapter(Array) 的(de)縮寫，VESA 是 Video Electronics Standards Association 的(de)縮寫，DDC 是 Display Data Channel 的(de)縮寫，信号類型爲模拟類型，顯示卡端的(de)接口爲 15 針母插座：

15 PIN HIGHDENSITY D-SUB FEMALE

顯示器連線端的(de)接口爲 15 針公插頭：
15 PIN HIGHDENSITY D-SUB MALE

引腳定義

　

Pin Name Dir Description
1 RED --> Red Video (75 ohm, 0.7 V p-p)
2 GREEN --> Green Video (75 ohm, 0.7 V p-p)
3 BLUE --> Blue Video (75 ohm, 0.7 V p-p)
4 RES - Reserved
5 GND --- Ground
6 RGND --- Red Ground
7 GGND --- Green Ground
8 BGND --- Blue Ground
9 +5V --> +5 VDC
10 SGND --- Sync Ground
11 ID0 <-- Monitor ID Bit 0 (optional)
12 SDA <-> DDC Serial Data Line
13 HSYNC or CSYNC --> Horizontal Sync (or Composite Sync)
14 VSYNC --> Vertical Sync
15 SCL <-> DDC Data Clock Line