Novatel OM-20000077 user manual J1 Interfaces and Power Connector Pin Assignment

Technical Specifications Appendix A

A.2.2 Connector Pin Assignment

Table 7 shows the Interface and Power connector J1 pin assignment.

Table 7: J1 Interfaces and Power Connector Pin Assignment

J1 PIN #	SIGNAL NAME	FUNCTION
1	PREAMP	Power for active antenna (40 mA max)
2	VCC	Primary power (3.3V or 5.0V -0.5 V/+0.25 V)
3	VBATT	Back-up battery for real-time clock device
		(external series diode required)
4	RX_NO_3/DISC_IO_3	Serial port Rx #3/ Programmable discrete I/O pin
		(expansion pin for special applications)
5	MASTER_RESET	Reset input pin (active low)
6	DISC_IP_1	Reprogramming control input pin (active high)
7	DISC_IP_2	Protocol select pin (see Section 3.5 on Page 24)
8	DISC_IP_3	NVM control pin (see Section 3.5 on Page 24)
9	DISC_IO_1	Programmable discrete I/O pin (expansion pin
		for special applications)
10	GND	Ground
11	TX_NO_1	Serial port Tx #1
12	RX_NO_1	Serial port Rx #1
13	GND	Ground
14	TX_NO_2	Serial port Tx #2
15	RX_NO_2	Serial port Rx #2
16	GND	Ground
17	DISC_IO_2	Programmable discrete I/O pin (expansion pin
		for special applications)
18	GND	Ground
19	TIMEMARK	1PPS output
20	TX_NO_3	Serial port Tx #3

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