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Connector pin assignment
20-pin color display signal cable*
Threading
1.
Channel 0 real signal
2.
Monitor ground
Channel 0 auxiliary
3.
4.
Channel 1 real signal
5.
Monitor ground
Channel 1 auxiliary
6.
7.
Channel 2 real signal
8.
Monitor ground
Channel 2 auxiliary
9.
10.
Channel 3 real signal
* Limited to specific models
19-pin color display signal cable*
Threading
1.
TMDS data 2 +
2.
TMDS data 2 mask
3.
4.
TMDS data 1 +
5.
TMDS data 1 mask
6.
7.
TMDS data 0 +
8.
TMDS data 0 mask
9.
* Limited to specific models
Explanations
signal
signal
signal
Use
TMDS data 2 -
TMDS data 1 -
TMDS data 0 -
Threading
11.
12.
Channel 3 auxiliary signal
13.
14.
15.
Auxiliary channel real signal
16.
17.
Auxiliary channel auxiliary signal
18.
19.
20.
Threading
10.
11.
12.
13.
14.
(not connected on the device)
15.
16.
17.
18.
19.
7
19
17
15
20
18
16
14
Explanations
Monitor ground
Reserved (protocol pull)
Reserved (protocol pull)
Signal detection
Hot plug detection
Monitor ground
3.3 V power supply
Use
TMDS clock +
TMDS clock mask
TMDS clock -
CEC
Reserved
SCL
SDA
DDC/CEC ground
+5 V power supply
Hot plug detection
13
11
9
7
5
3
1
12
10
8
6
4
2
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