DSP56F801 View Datasheet(PDF) - Motorola => Freescale
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Description
Manufacturer
DSP56F801 Datasheet PDF : 44 Pages
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Freescale Semiconductor, Inc.
Serial Peripheral Interface (SPI) Signals
2.6 Serial Peripheral Interface (SPI) Signals
Table 9. Serial Peripheral Interface (SPI) Signals
No. of
Pins
Signal
Name
Signal
Type
State
During
Reset
Signal Description
1
MISO
Input/
Output
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.
GPIOB6
Input/
Output
1
MOSI
Input/
Output
GPIOB5
Input/
Output
1
SCLK
Input/
Output
Input
Input
Input
Input
Port E GPIO—This pin is a General Purpose I/O (GPIO) pin
that can be individually programmed as 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 pin is a General Purpose I/O (GPIO) pin
that can be individually programmed as 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.
GPIOB4
Input/
Output
Input
Port E GPIO—This pin is a General Purpose I/O (GPIO) pin
that can be individually programmed as an input or output pin.
After reset, the default state is SCLK.
1
SS
Input
Input
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.
GPIOB7
Input/
Output
Input
Port E GPIO—This pin is a General Purpose I/O (GPIO) pin
that can be individually programmed as an input or output pin.
After reset, the default state is SS.
56F801 Technical Data
9
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