问下屏幕接口的意思

会员187534

Terminal Symbol Functions
1 VDD Power Supply : +3.3V (typical)
2 VDD Power Supply : +3.3V (typical)
3 GND Ground
4 GND Ground
5 RIN0- -LVDS differential data input (R0~R5,G0)
6 RIN0+ +LVDS differential data input (R0~R5,G0)
7 GND Ground
8 RIN1- -LVDS differential data input (G1~G5,B0,B1)
9 RIN1+ +LVDS differential data input (G1~G5,B0,B1)
10 GND Ground
11 RIN2- -LVDS differential data input (B2~B5,HS,VS,DE))
12 RIN2+ +LVDS differential data input (B2~B5,HS,VS,DE)
13 GND Ground
14 CLKIN- -LVDS differential Clock input
15 CLKIN+ +LVDS differential Clock input
16 GND Ground
17 EDID 3.3V EDID 3.3V
18 VSS Ground
19 EDID Clk EDID Clk
20 EDID Data EDID Data

上面是一屏幕的接口定义（SXGA+） 问下 17 EDID 3.3V EDID 3.3V 里的edid是什么意思？