L831-EA Module Hardware User Manual
Page 21 of 43
module is WWAN-SSIC0
22
I2S_RX
O
T
T
I2Sserial data output, CMOS 1.8V
23
WOWWAN#
O
PU
PU
The module wake up the Host device
signal
，
low level is available
，
CMOS
1.8V.
24
I2S_TX
I
T
T
I2Sserial data input, CMOS 1.8V
25
DPR
I
Body SAR Detect
，
CMOS 1.8V
26
W_DISABLE2#
I
PU
PU
GPS Disable signal, low level is
available, CMOS 1.8V (not support
yet).
27
GND
GND
28
I2S_WA
O
T
T
I2S left/right channel clock signal,
CMOS 1.8V
29
SSIC-RXN/USB3.0-RX-(NC)
NC
30
UIM_RESET
O
PP
PP
Reset signal of USIM card.
31
SSIC-RXP/USB3.0-RX+(NC)
I/O
NC
32
UIM_CLK
O
PP
PP
Clock signal of USIM card.
33
GND
GND
34
UIM_DATA
I/O
PU
PU
Data signal of USIM card. the
internal 4.7K resistance will be pulled
up.
35
SSIC-TXN/USB3.0-TX-(NC)
NC
36
UIM_PWR
O
Power output of SIM card, 1.8V/3.0V
37
SSIC-TXP/USB3.0-TX+(NC)
NC
38
NC
NC
39
GND
GND
40
GNSS_SCL
O
PU
PU
I2C serial data signal clock, the
internal 4.7K resistance will be pulled
up, CMOS 1.8V.
41
NC
NC
42
GNSS_SDA
I/O
PU
PU
I2C serial data signal data, the
internal 4.7K resistance will be pulled
up, CMOS 1.8V
