https://docs.amd.com/v/u/en-US/spi4_2_lite_ug181
LogiCORE IP SPI-4.2 Lite v5.2 User Guide (UG181) - 6.0 English - Describes the function and...
Describes the function and operation of the Xilinx SPI-4.2 (PL4) Lite core, and provides information about designing, customizing, and implementing the core