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FIBOCOM MC610 Series Hardware Guide
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Pin Pin Name
I/O
Voltage
Domain
Reset
Value
Description
Support function
GPIO31/SIM2_SRST/U1RTS
18
UART1_RX
I
1.8V
-
Data receiving of module serial port 1
19
UART1_TX
O
1.8V
-
Data transmission of module serial port 1
20
UART1_RTS
I
1.8V
-
DTE request to transmit data
21
UART1_CTS
O
1.8V
-
Module clearing transmitting
It can be modified by software as a CPlog
port. It is recommended to reserve test points
22
GPIO
I/O 1.8V
L
GPIO26
Support function U2TXD/U3RTS/SPI2CLK
23
SIM1_DATA
I/O 1.8V/3.0V
-
USIM1 data signal line
24
SIM1_CLK
O
1.8V/3.0V
-
USIM1 clock signal line
25
SIM1_RST
O
1.8V/3.0V
-
USIM1 reset signal line
26
VSIM1
PO 1.8V/3.0V
-
USIM1 power supply
27
SIM_DET
I
1.8V
-
Module SIM hot-plug detection pin
10 k grounding is recommended when it is not
in use.
Support function
SIM_DET/FLSIO3/GPIO5/PWT*
28
MIC_N
I
-
-
Main MIC differential output negative
29
MIC_P
I
-
-
Main MIC differential output positive
30
MIC_BIAS
PO 1.8V
-
Main MIC bias voltage output
MIC differential output connection is not used
inside, and it must be connected when using
31
VBUS_IN
PI
Vmax=5.2V
Vmin=4.5V
-
Charging voltage input detection