Acer ED270R 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 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Explanations Channel 0 real signal Monitor ground Channel 0 auxiliary signal Channel 1 real signal Monitor ground Channel 1 auxiliary signal Channel 2 real signal Monitor ground Channel 2 auxiliary signal Channel 3 real signal Threading 11. 12. Explanations Monitor ground Channel 3 auxiliary signal 13. Reserved (protocol pull) 14. Reserved (protocol pull) 15. Auxiliary channel real signal 16. Signal detection 17. Auxiliary channel auxiliary signal 18. Hot plug detection 19. Monitor ground 20. 3.3 V power supply * Limited to specific models 19-pin color display signal cable* Threading 1. 2. 3. 4. Use TMDS data 2 + TMDS data 2 mask TMDS data 2 TMDS data 1 + 5. TMDS data 1 mask 6. TMDS data 1 - 7. TMDS data 0 + 8. TMDS data 0 mask 9. 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