Hardware+Design V1.07

Smart Machine Smart Decision
SPI_MOSI_DATA O
SPI (master only) master out/slave in
data
SPI_MISO_DATA I
SPI (master only) master in/slave out
data
USB
USB_VBUS I USB power supply input
USB_DP I/O
Plus (+) line of the differential,
bi-directional USB signal to/from the
p
eri
p
heral device.
USB_DM I/O
Minus (-) line of the differential,
bi-directional USB signal to/from the
p
eri
p
heral device.
They are compliant with
the USB 2.0 specification.
If it is unused, keep open.
Serial interface
UART_RXD I Receive Data
UART_TXD O Transmit Data
UART_RTS O Request to send
UART_CTS I Clear to Send
UART_RI O Ring Indicator
UART_DTR I/O DTE get ready
UART_DCD O Carrier detects
UART_RXD has been
pulled down with a 12kR
resistor to ground in the
module.
If it is unused, keep open.
I2C interface
I2C_SDA I/O I2C data
I2C_SCL O I2C clock output
Pulled up with a 2.2kR
resistor to 2.6V internally.
If it is unused, keep open.
Keypad interface
KEYPAD_0 O
Bit 0 drive to the pad matrix
KEYPAD_1 O Bit 1 drive to the pad matrix
KEYPAD_2 O Bit 2 drive to the pad matrix
KEYPAD_3 O Bit 3 drive to the pad matrix
KEYPAD_4 O Bit 4 drive to the pad matrix
KEYSENSE_N0 I
Bit 0 for sensing key press on pad
matrix
KEYSENSE_ N1 I
Bit 1 for sensing key press on pad
matrix
KEYSENSE_ N2 I
Bit 2 for sensing key press on pad
matrix
KEYSENSE_ N3 I
Bit 3 for sensing key press on pad
matrix
KEYSENSE_ N4 I
Bit 4 for sensing key press on pad
matrix
All Keypad pins can be
configured as GPIOs.
If it is unused, keep open.
PCM interface
PCM_DIN/GPIO0 I
General Input PIN with module
wake/interrupt. It also can be
multiplexed as the PCM_DIN pin.
If it is unused, keep open.
SIM5320_Hardware Design_V1.07 2012-09-21
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