Curtis AR-B1682 - Manual (Page 22)

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2-19. EXTERNAL SPEAKER HEADER(CN20)
3-4 On
Enable Internal Buzzer
2 X
3 INT BZ
4 BUZ Z
1 Vcc
Enable External Buzzer
2 X
3 INT BZ
4 BUZ Z
1 Vcc
2-20. Ethernet RJ-45 Connector(CN21)
The pin assignments are as follows:
1 8
PIN FUNCTION PIN ASSIGNMENT
1 TPTX+ 5 NOT USED
2 TPTX+ 6 TPRX-
3 TPRX+ 7 NOT USED
4 NOT USED 8 NOT USED
2-21. VGA CRT CONNECTOR(CN19)
6
10
15
11
1
2
3
4
5
1 Red
2 Green
3 Blue
13 Horizontial
14 Vertical
4, 9,11, 12 & 15 Not Used
5 & 10 Ground
6, 7 & 8 GND
2-22. WATCHDOG CONNECTOR(CN17)
+:Vcc - : WD LED