SimCom SIM5320AL User Manual page 18

SPI_MOSI_DATA
SPI_MISO_DATA
USB
USB_VBUS
USB_DP
USB_DM
Serial interface
UART_RXD
UART_TXD
UART_RTS
UART_CTS
UART_RI
UART_DTR
UART_DCD
I2C interface
I2C_SDA
I2C_SCL
Keypad interface
KEYPAD_0
KEYPAD_1
KEYPAD_2
KEYPAD_3
KEYPAD_4
KEYSENSE_N0
KEYSENSE_ N1
KEYSENSE_ N2
KEYSENSE_ N3
KEYSENSE_ N4
PCM interface
PCM_DIN/GPIO0
SIM5320AL_User Manual_V1.01
SPI (master only) master out/slave in
O
data
SPI (master only) master in/slave out
I
data
I USB power supply input
Plus (+) line of the differential,
I/O bi-directional USB signal to/from the
peripheral device.
Minus (-) line of the differential,
bi-directional USB signal to/from the
I/O
peripheral device.
I Receive Data
O Transmit Data
O Request to send
I Clear to Send
O Ring Indicator
I/O DTE get ready
O Carrier detects
I/O I2C data
O I2C clock output
O Bit 0 drive to the pad matrix
O Bit 1 drive to the pad matrix
O Bit 2 drive to the pad matrix
O Bit 3 drive to the pad matrix
O Bit 4 drive to the pad matrix
Bit 0 for sensing key press on pad
I
matrix
Bit 1 for sensing key press on pad
I
matrix
Bit 2 for sensing key press on pad
I
matrix
Bit 3 for sensing key press on pad
I
matrix
Bit 4 for sensing key press on pad
I
matrix
General Input PIN with module
I wake/interrupt.
multiplexed as the PCM_DIN pin.
Smart Machine Smart Decision
It also can be
18
They are compliant with
the USB 2.0 specification.
If it is unused, keep open.
UART_RXD has been
pulled down with a 12kR
resistor to ground in the
module.
If it is unused, keep open.
Pulled up with a 2.2kR
resistor to 2.6V internally.
If it is unused, keep open.
All Keypad pins can be
configured as GPIOs.
If it is unused, keep open.
If it is unused, keep open.
2014-08-20