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FIBOCOM MC610 Series Hardware Guide
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Pin Pin Name
I/O
Voltage
Domain
Reset
Value
Description
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
86
GND
G
-
-
Ground
87
KEY_OUT3
O
1.8V
-
KEYOUT3
KEYOUT cannot be used alone.
88
KEY_IN3
I
1.8V
-
Key pad input 3
KEYIN cannot be used alone.