Samsung S5PC100 User Manual page 670

S5PC100 USER'S MANUAL (REV1.0)
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
SPI0_CLK In/Out
SPI1_CLK
SPI2_CLK
SPI0_MISO In/Out
SPI1_MISO
SPI2_MISO
SPI0_MOSI In/Out
SPI1_MOSI
SPI2_MOSI
SPI0_nSS In/Out
SPI1_nSS
SPI2_nSS
NOTE: Type field indicates whether pads are dedicated to the signal or pads are connected to the multiplexed signals.
I/O
XspiCLK is the serial clock used to control time of
data transfer.
Out, when used as master
In, when used as slave
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
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
Slave selection signal. All data TX/RX sequences
are executed if XspiCS is low.
Out, when used as master
In, when used as slave
Description
SPI CONTROLLER
Pad Type
XspiCLK[0] muxed
XspiCLK[1]
Xmmc2CLK
XspiMISO[0] muxed
XspiMISO[1]
Xmmc2DATA[0]
XspiMOSI[0] muxed
XspiMOSI[1]
Xmmc2 DATA[1]
XspiCSn[0] muxed
XspiCSn[1]
Xmmc2CMD
8.3-5