56F803 Datasheet, PDF (12/48 Pages) Motorola, Inc – 56F803 16-bit Hybrid Controller

Freescale Semiconductor, Inc.
2.7 Serial Peripheral Interface (SPI) Signals
Table 12. Serial Peripheral Interface (SPI) Signals
No. of
Pins
Signal
Name
Signal
Type
State During
Reset
Signal Description
1
MISO
Input/
Output
GPIOE6
Input/
Output
1
MOSI
Input/
Output
GPIOE5
Input/
Output
1
SCLK
Input/
Output
GPIOE4
Input/
Output
1
SS
Input
GPIOE7
Input/
Output
Input
Input
Input
Input
Input
Input
Input
Input
SPI Master In/Slave Out (MISO)—This serial data pin is an
input to a master device and an output from a slave device.
The MISO line of a slave device is placed in the high
impedance state if the slave device is not selected.
Port E GPIO—This General Purpose I/O (GPIO) pin can be
individually programmed as an input or output pin.
After reset, the default state is MISO.
SPI Master Out/Slave In (MOSI)—This serial data pin is an
output from a master device and an input to a slave device.
The master device places data on the MOSI line a half-cycle
before the clock edge that the slave device uses to latch the
data.
Port E GPIO—This General Purpose I/O (GPIO) pin can be
individually programmed as an input or output pin.
After reset, the default state is MOSI.
SPI Serial Clock—In master mode, this pin serves as an
output, clocking slaved listeners. In slave mode, this pin
serves as the data clock input.
Port E GPIO—This General Purpose I/O (GPIO) pin can be
individually programmed as an input or output pin.
After reset, the default state is SCLK.
SPI Slave Select—In master mode, this pin is used to
arbitrate multiple masters. In slave mode, this pin is used to
select the slave.
Port E GPIO—This General Purpose I/O (GPIO) pin can be
individually programmed as an input or output pin.
After reset, the default state is SS.
12
56F803 Technical Data
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