User's Manual

Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
L850-GL Hardware User Manual Page
17
of
51
3.1.2 Pin Definition
The pin definition is as follows:
Pin
Pin Name
I/O
Reset Value
Pin Description
Type
1
CONFIG_3
O
NC
NC,L850 M.2 module is configured as
the WWAN – PCIe,USB3.0 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
FUL_CARD_
POWER_OFF#
I
PU
Power enable,Module power on
input,internal pull up
CMOS
3.3/1.8V
7
USB D+
I/O
USB Data Plus
0.3---3V
8
W_DISABLE1#
I
PD
WWAN Disable,active low
CMOS
3.3/1.8V
9
USB D-
I/O
USB Data Minus
0.3---3V
10
LED1#
O
T
System status LED,Output open
drain,CMOS 3.3V
CMOS 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
I2S_CLK
O
PD
I2S Serial clock,
Reserved
CMOS 1.8V
21
CONFIG_0
GND
GND,L850 M.2 module is configured as
the WWAN – PCIe,USB3.0 interface
type
22
I2S_RX
I
PD
I2S Serial receive data,
CMOS 1.8V