SPRUJ53D April 2024 – April 2026 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1
In this configuration, the FSITX is the controller clock. The FSITX module drives TXCLK (SPICLK), TXD0 (SPIPICO), and TXD1 (SPISTE/chip select) to the SPI peripheral. The SPIPOCI 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 peripheral. Some software logic is required for the FSI to emulate an SPI controller fully.