Display Data Channel (Ddc); Connector Pin Assignment - Acer XV275K User Manual

Display Data Channel (DDC)

To make installation easier, so long as your system supports the DDC protocol, the
monitor is able to plug-and-play. The DDC is a communication protocol through which
the monitor automatically informs the host system about its capabilities; for example,
supported resolutions and corresponding timing. The monitor supports the DDC2B
standard.

Connector pin assignment

20-pin color display signal cable
PIN No. Description
1 ML_LANE3_N
3 ML_LANE3_P
5 GND
7 ML_LANE1_N
9 ML_LANE1_P
11 GND
13 GND
15 AUX_CH_P
17 AUX_CH_N
19 RETURN(GND)
19-pin color display signal cable
PIN No. Description
1 TMDS Data2+
3 TMDS Data2-
5 TMDS Data1 Shield
7 TMDS Data0+
9 TMDS Data0-
11 TMDS Clock Shield
13 CEC
15 SCL
17 DDC/CEC Ground
19 Hot Plug Detect
PIN No. Description
2 GND
4 ML_LANE2_N
6 ML_LANE2_P
8 GND
10 ML_LANE0_N
12 ML_LANE0_P
14 GND
16 GND
18 HPD
20 DP_PWR(3.3V, 500mA)
PIN No. Description
2 TMDS Data2 Shield
4 TMDS Data1+
6 TMDS Data1-
8 TMDS Data0 Shield
10 TMDS Clock+
12 TMDS Clock-
14 Reserved (N.C. on device)
16 SDA
18 +5V Power
19 17 15 13 11 9 7 5 3 1
18 16 1412 10 8 6 4 2
4