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SPI Master/Slave
Figure 4.
MCU-DSP Receive Transmit Protocol in Master Mode With CIi = 0, CEi = 0,
and CPi = 0
MCU-DSP write
SPI_TX
SPI_CTRL
TSPENi
SRCLK
SPI_SR
TSPDO
TSPDI
TSPDOEN
IRQ
SPI_ISR
SPI_RX
32
Serial Interfaces
RD = 1
1
DATA1
dNB
dNB
MCU-DSP write in SPI_ISR
DATA 1
RD = 0
NB+1
d0
d0
READ DATA 1
RE = 1
RE = 0
READ DATA 1
SPRU760B
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