TX Register
RX Register
FIFO
64-Byte
Depth
TX Shift Register
RX Shift Register
TX Shift Clock
RX Shift Clock
SPI Domain
OCP Domain
Configuration:
MCSPI_CH(i)CONF[TRM]=012 Receive only mode
MCSPI_CH(i)CONF[FFRE]=0x1 FIFO enabled on receive path
MCSPI_CH(i)CONF[FFWE] not applicable
OCP Bus
SPIDATAO
SPIDATAI
TX Register
RX Register
FIFO
64-Byte
Depth
TX Shift Register
RX Shift Register
TX Shift Clock
RX Shift Clock
SPI Domain
OCP Domain
Configuration:
MCSPI_CH(i)CONF[TRM]=0x2 Transmit only mode
MCSPI_CH(i)CONF[FFRE]=0x1 FIFO enabled on transmit path
MCSPI_CH(i)CONF[FFWE] not applicable
OCP Bus
SPIDATAO
SPIDATAI
Functional Description
Figure 24-17. Transmit-Only Mode With FIFO Used
Figure 24-18. Receive-Only Mode With FIFO Used
4017
SPRUH73H – October 2011 – Revised April 2013
Multichannel Serial Port Interface (McSPI)
Copyright © 2011–2013, Texas Instruments Incorporated