Acer ED320QR User Manual - Page 17

Connector pin assignment

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

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