Samsung S5PC100, User Manual

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S5PC100 USER’S MANUAL (REV1.0) SPI CONTROLLER
8.3-5
3 I/O DESCRIPTION
The following table lists the external signals between the SPI and external device. The unused SPI ports are used
as General Purpose I/O ports. Refer Chapter "General Purpose I/O" for detail information.
Function Signal I/O Description Pad Type
SPI0_CLK
SPI1_CLK
SPI2_CLK In/Out XspiCLK is the serial clock used to control time of
data transfer.
Out, when used as master
In, when used as slave XspiCLK[0]
XspiCLK[1]
Xmmc2CLK muxed
SPI0_MISO
SPI1_MISO
SPI2_MISO In/Out This port is the input port in Master mode. Input
mode is used to get data from slave output port.
Data are transmitted to master through this port in
slave mode.
Out, when used as slave
In, when used as master XspiMISO[0]
XspiMISO[1]
Xmmc2DATA[0] muxed
SPI0_MOSI
SPI1_MOSI
SPI2_MOSI In/Out This port is the output port in Master mode. This
port is used to transfer data from master output port.
Data are received from master through this port in
slave mode.
Out, when used as master
In, when used as slave XspiMOSI[0]
XspiMOSI[1]
Xmmc2 DATA[1] muxed
SPI0_nSS
SPI1_nSS
SPI2_nSS In/Out Slave selection signal. All data TX/RX sequences
are executed if XspiCS is low.
Out, when used as master
In, when used as slave XspiCSn[0]
XspiCSn[1]
Xmmc2CMD muxed
NOTE: Type field indicates whether pads are dedicated to the signal or pads are connected to the multiplexed signals.