Hardware Guide

3 Pins
Copyright © Fibocom Wireless Inc. 30
Pin No.
Pin Name
I/O
Power
domain
Description
automatically identifies 1.8 V or 3.0 V
(U)SIM card
53
USIM_DET/BT_EN
DI
1.8 V
SIM card detection/Bluetooth
enabling
Table 32. SD card interface
Pin No.
Pin Name
I/O
Power
domain
Description
21
SD_CMD
IO
1.8 V/3 V
SD card control signal
22
SD_DATA0
IO
1.8 V/3 V
SD card data signal 0
23
SD_DATA1
IO
1.8 V/3 V
SD card data signal 1
24
SD_DATA2
IO
1.8 V/3 V
SD card data signal 2
25
SD_DATA3
IO
1.8 V/3 V
SD card data signal 3
26
SD_CLK
O
1.8 V/3 V
SD card clock signal
48
SD_DET
IO
1.8 V
SD card insertion detection. Active low
by default
Table 33. UART interface
Pin No.
Pin Name
I/O
Power
domain
Description
66
RTS
O
1.8 V
Request to send
67
CTS
I
1.8 V
Clear to send
70
RI
O
1.8 V
Ring prompt
71
DCD
O
1.8 V
Carrier detection