Fibocom L-831-EA User Manual page 21

22 I2S_RX
23 WOWWAN#
24 I2S_TX
25
26 W_DISABLE2#
27
28 I2S_WA
29 SSIC-RXN/USB3.0-RX-(NC)
30 UIM_RESET
31 SSIC-RXP/USB3.0-RX+(NC)
32 UIM_CLK
33
34 UIM_DATA
35 SSIC-TXN/USB3.0-TX-(NC)
36 UIM_PWR
37 SSIC-TXP/USB3.0-TX+(NC)
38
39
40 GNSS_SCL
41
42 GNSS_SDA
L831-EA Module Hardware User Manual
DPR
GND
GND
NC
GND
NC
O T T
O PU PU
I T T
I
I PU PU
O T T
O PP PP
I/O
O PP PP
I/O PU PU
O
O PU PU
I/O PU PU
module is WWAN-SSIC0
I2Sserial data output, CMOS 1.8V
The module wake up the Host device
signal，low level is available，CMOS
1.8V.
I2Sserial data input, CMOS 1.8V
Body SAR Detect，CMOS 1.8V
GPS Disable signal, low level is
available, CMOS 1.8V (not support
yet).
GND
I2S left/right channel clock signal,
CMOS 1.8V
NC
Reset signal of USIM card.
NC
Clock signal of USIM card.
GND
Data signal of USIM card. the
internal 4.7K resistance will be pulled
up.
NC
Power output of SIM card, 1.8V/3.0V
NC
NC
GND
I2C serial data signal clock, the
internal 4.7K resistance will be pulled
up, CMOS 1.8V.
NC
I2C serial data signal data, the
internal 4.7K resistance will be pulled
up, CMOS 1.8V
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