PXR40RM Datasheet, PDF (861/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Chapter 25
Deserial Serial Peripheral Interface (DSPI)
25.1 Introduction
This device includes four DSPI blocks (DSPI_A, DSPI_B, DSPI_C, DSPI_D).
Figure 25-1 is a block diagram of a single Deserial Serial Peripheral Interface (DSPI) block.
eDMA
INTC
Slave interface
SPI
DMA and interrupt control
TX FIFO
RX FIFO
DSPI BIU
CMD TX data
RX data
CSI
priority
logic
16
16
Shift register
SPI and DSI baud rate,
delay and transfer
control
8
TXSS
16
32
16
32
16
16
DSI
32
From eTPU
and eMIOS
output channels
32
To eTPU or
eMIOS
input channels
SIU_DISR
SOUTx
SINx
SCKx
HT
PCSx/SS/PCSS/MTRIG
Figure 25-1. DSPI Block Diagram
NOTE
The TXSS signal is described on Section 25.3.2.1, DSPI Module
Configuration Register (DSPI_MCR). For details on 32 bits operation see
Section 25.4.9, Timed Serial Bus (TSB).
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
25-1