USGlobalsat EB-5318RE - Manual (Page 3)

2012/8/31 3
Product Pin Description
PIN Number(s) Name Type Description Note
1,3,9,18,19 GND P Ground.
2 RF IN RF GPS antenna input
4 RESET_N I System reset (active low)
5 VCC P Main power supply to the engine board.
6 V_BAT P Backup battery supply voltage
7,8 NC EB-5318RF reverse pin
10 BOOTSEL I Set this pin to high for programming flash.
11 TXD O
This is the main transmits channel for
outputting navigation and measurement data
to user’s navigation software or user written
software. Output TTL level, 0V ~ 2.85V.
12 RXD I
This is the main receive channel for receiving
software commands to the engine board from
SiRFdemo software or from user written
software.
13 DR_I2C_DIO I/O
14 DR_I2C_CLK I/O
Host I2C Interface.
Support MEMS Sensor , 1.8V Level
1,4
15 TIMEPULSE O One pulse per second output.(1PPS)
16 ON_OFF I
ON_OFF pin is used to command the
EB-5318RF to turn on or off
2
17 WAKE_UP O System power on, 1.8V output . 3