Hardware Guide

Reproduction forbidden without Fibocom Wireless Inc. written authorization - All rights reserved.
FIBOCOM MC610 Series Hardware Guide 21/71
Pin
Pin Name
I/O
Voltage
Domain
Reset
Value
Description
77
U3RXD
I
1.8V/3V*
-
Data receiving of module serial port 3
Multiplexing function
SD1_D2/GPIO27/U2CTS/U3RXD/SPI2DIO_0
78
U3TXD
O
1.8V/3V*
-
Data transmission of module serial port 3
Multiplexing function
SD1_D3/GPIO28/U2RTS/U3TXD/SPI2DI_1
79
CAM_PWDN
O
1.8V
-
SPI camera power down
Multiplexing function
CAM_PWDN/GPIO19/SDA1
80
CAM_REFCLK
O
1.8V
-
SPI camera reference CLK
Multiplexing function CAM_REFCLK/GPIO20
81
HEADMIC_BIAS
PO
-
-
Bias voltage of earphone MIC
which is not connected internally, must
receive the HEADMIC signal when using
externally
82
I2S2_SDAT_O
O
1.8V
-
I2S data output signal
Multiplexing function
FLSIO1/GPIO3/DSI_D1P/I2S2_SDAT_O
83
I2S2_BCK
O
1.8V
-
I2S bit (serial) clock signal
Multiplexing function
FLSCLK/GPIO0/DSI_CKN/I2S2_BCK
84
I2S2_LRCK
O
1.8V
-
I2S frame clock or WS for channel switching
Multiplexing function
FLSCS/GPIO1/DSI_CKP/I2S2_LRCK
85
I2S2_SDAT_I
I
1.8V
-
I2S data input signal
Multiplexing function
GPIO2/DSI_D1N/I2S2_SDAT_I/FLSIO0