Pins Description - Fibocom L-831-EA User Manual

4.1.2 Pins Description

The description of L831-EA pins as listed below:
Pin#
1 CONFIG_3
2
3
4
5
6 FUL_CARD_POWER_OFF#
7 USB D+
8 W_DISABLE1#
9
10
11
12
13
14
15
16
17
18
19
20 I2S_CLK
21 CONFIG_0
L831-EA Module Hardware User Manual
Figure4- 2 Pins Definition (Top View)
Name
+3.3V
GND
+3.3V
GND
USB D-
LED1#
GND
Notch
Notch
Notch
Notch
Notch
Notch
Notch
Notch
CONFIG_3
Reset Idle
I/O
Value Value
O L L
PI
PI
I PU PU
I/O
I PU PU
I/O
O OD OD
O T T
O NC NC
Description
The internal connects with GND, the
interface type of L831-EA module is
WWAN-SSIC0.
The main power input, the voltage
range is: 3.135V ~ 4.4V
GND
The main power input, the voltage
range is: 3.135V ~ 4.4V
GND
Off control signal，the internal 200K
ohm will be pulled down, CMOS 1.8V
USB 2.0 signal+
WWAN Disable, Low active, CMOS
3.3V
USB 2.0 signal-
System status LED， drain output, low
level is available, CMOS 3.3V
GND
Notch
Notch
Notch
Notch
Notch
Notch
Notch
Notch
I2S serial clock，CMOS 1.8V
NC，the interface type of L831-EA
1
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