Chapter 20 Deserial Serial Peripheral Interface (DSPI)
MPC5602P Microcontroller Reference Manual, Rev. 4
Freescale Semiconductor
437
Chapter 20
Deserial Serial Peripheral Interface (DSPI)
20.1
Introduction
This chapter describes the deserial serial peripheral interface (DSPI), which provides a synchronous serial
bus for communication between the MCU and an external peripheral device.
The MPC5602P implements the modules DSPI0, 1 and 2. The “x” appended to signal names signifies the
module to which the signal applies. Thus CS0_x specifies that the CS0 signal applies to DSPI module 0,
1, etc.
20.2
Block diagram
A block diagram of the DSPI is shown in
Figure 20-1. DSPI block diagram
CMD
DMA and interrupt control
TX FIFO
RX FIFO
TX data
RX data
16
16
Shift register
SOUT
_x
(
x
= 0:2)
SPI
SPI baud rate,
delay and transfer
control
SIN
_x
(
x
= 0:2)
SCK
_x
(
x
= 0:2)
CS4:7
_
0
INTC
eDMA
4
CS0
_x
(
x
= 0:2)
1
DSPI_
x
(
x
= 0:2)
DSPI_0
CS1:3
_x
(
x
= 0:2)
3
DSPI_
x
(
x
= 0:2)
Содержание SAFE ASSURE Qorivva MPC5601P
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