Et-314 – USGlobalsat ET-314 User Manual
Page 5
ET-314
The Specifications are subject to be changed without notice. Copyright © 2007, GlobalSat Technology.
Page 5 of 19
Version 1.2
Pin
Signal Name
I/O
Description
1
VCC
I
DC Supply Voltage input
2 GND
G Ground
3
Boot select
I
Boot mode
4 RXA
I Serial
port
A
5 TXA
O Serial
port
A
6
TXB
O
Serial port B
7
RXB
I
Serial port B
8
GPIO14
I/O
General –purpose I/O
9 RF_ON
10 GND
G Digital
Ground
11
16
GND_A G
Analog
Ground
17
RF_IN
I
GPS Signal input
18 GND_A
G Analog
Ground
19
V_ANT_IN
I
Active Antenna Bias voltage
20
VCC_RF
O
Supply Antenna Bias voltage
21
V_BAT
I
Backup voltage supply
22
Reset
I
Reset (Active low)
23
GPIO10
I/O
General purpose I/O
24
GPIO1
I/O
General purpose I/O
25
GPIO5
I/O
General purpose I/O
26
GPIO0
I/O
General purpose I/O
(support continuous power mode only)
27
GPIO13
I/O
General purpose I/O
28
GPIO15
I/O
General purpose I/O
29
PPS
O
One pulse per second
30 GND
G Digital
Ground
Definition of Pin assignment
VCC
This is the main DC supply for a 3.3V +- 5% DC input power module board.
GND
GND provides the ground for digital part.