Curtis AR-B1682 External Speaker HEADERCN20, VGA CRT CONNECTORCN19, Watchdog CONNECTORCN17

2-19. EXTERNAL SPEAKER HEADER(CN20)

1Vcc

2X

3INT BZ

4BUZ Z

1Vcc

2X

3INT BZ

4BUZ Z

3-4 On

Enable Internal Buzzer Enable External Buzzer

2-20. Ethernet RJ-45 Connector(CN21)

The pin assignments are as follows:

8

1

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
1		11 1	Red
		2	Green
2
		3	Blue
3		13	Horizontial
4		14	Vertical
		4, 9,11, 12 & 15 Not Used
5
	10	5 & 10		Ground
		15 6, 7 & 8		GND

2-22. WATCHDOG CONNECTOR(CN17)

- : WD LED +:Vcc

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