VGA Vesa DDC 显示接口

VGA Vesa DDC显示接口

VGA 是 Video Graphics Adapter(Array) 的缩写，VESA 是 Video Electronics Standards Association 的缩写，DDC 是 Display Data Channel 的缩写，信号类型为模拟类型，显示卡端的接口为 15 针母插座：

15 PIN HIGHDENSITY D-SUB FEMALE

显示器连线端的接口为 15 针公插头：
15 PIN HIGHDENSITY D-SUB MALE

引脚定义

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

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

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