3 Pins
Copyright © Fibocom Wireless Inc.
29
Pin No. Pin Name
I/O
Power
domain
Description
34
WIFI_SLP_CLK
DO 1.8 V
WLAN sleep clock
Table 29. I
2
C interface
Pin No. Pin Name
I/O
Power
domain
Description
55
SCL
OD 1.8 V
I
2
C clock signal. It needs to be pulled
up by an external 1.8 V. Disconnect it
if it is not used.
56
SDA
OD 1.8 V
I
2
C data signal. It needs to be pulled
up by an external 1.8 V. Disconnect it
if it is not used.
Table 30. Debug interface
Pin No. Pin Name
I/O
Power
domain
Description
42
DBG_UART_TXD
DO 1.8 V
Debug serial port sending
106
DBG_UART_RXD
DI 1.8 V
Debug serial port receiving
Table 31. USIM interface
Pin No. Pin Name
I/O
Power
domain
Description
17
USIM_DATA
IO 1.8 V/3 V
(U)SIM data signal line. It needs to be
pulled up to USIM_VDD externally.
18
USIM_RST
O
1.8 V/3 V (U)SIM reset signal line
19
USIM_CLK
O
1.8 V/3 V (U)SIM clock signal line
20
USIM_VDD
PO 1.8 V/3 V (U)SIM power supply, the module
