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FM350-GL Hardware Guide
Page 14 of 59
Pin Definition
The pin definition is as below table:
Pin Pin Name
I/O
Reset Value
Pin Description
Level
1
CONFIG_3
O
NC
NC, FM350 M.2 module is configured as
the WWAN
– PCIe Gen3, USB3.1 Gen1
interface type
-
2
+3.3V
PI
-
Power input
Power Supply
3
GND
-
-
GND
Power Supply
4
+3.3V
PI
-
Power input
Power Supply
5
GND
-
-
GND
Power Supply
6
FULL_CARD_
POWER_OFF#
I
PU
Power enable, module power on input,
internal pull up(35
0KΩ)
3.3/1.8V
7
USB D+
I/O
-
USB data plus
0.3---3V
8
W_DISABLE1#
I
WWAN disable, active low
3.3/1.8V
9
USB D-
I/O
-
USB data minus
0.3---3V
10 LED1#
OD
-
System status LED, output open drain,
3.3V
3.3V
11 GND
-
-
GND
Power Supply
12 Notch
Notch
13 Notch
Notch
14 Notch
Notch
15 Notch
Notch
16 Notch
Notch
17 Notch
Notch
18 Notch
Notch
19 Notch
Notch
20 GPIO
I/O
GPIO
.
Reserved
1.8V
21 CONFIG_0
O
NC
GND, FM350 M.2 module is configured
as the WWAN
– PCIe Gen3, USB3.1
Gen1 interface type
-
22 UART_TX
O
-
UART TXD output
, can mux as
ANT_TUNER_CFG or GPIO.
Reserved
1.8V
23 WOWWAN#
O
-
Wake up host, Reserved
1.8V
24 ANT_TUNER_1V8 O
-
1.8V power output for antenna tuner, can
mux as GPIO.
1.8V