A little over a year ago we designed in the Cypress 4343W across the SPI interface. At that time, it was well documented on how to connect SPI.
In the H rev of the documentation, SPI interface was removed. I do not want to change our design or lose the speed advantage of using SPI over 1 bit SDIO.
Can I still use the SPI interface?
Yes, you can still use the SPI interface in your existing design as the bus support exists in SDK as located in 43xxx_Wi-Fi/WICED/WWD/internal/bus_protocols/SPI.