SPRUII0F May 2019 – June 2024 TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S
In this configuration, the FSITX is the master clock. The FSITX module drives TXCLK (SPICLK), TXD0 (SPISIMO), and TXD1 (SPISTE/chip select) to the SPI slave. The SPISOMI signal is connected back to the RXD0 signal. RXCLK can be applied either using the internal SPI pairing feature or externally wired, depending on the application requirements. Since the FSITX and RX modules are independent, the FSIRX can also be thought of as an additional SPI slave. Some software logic is required for the FSI to emulate an SPI master fully.