HI I have designed a TRF7964A board with Microchip host controller, TRF7964A communicates with the HOST controller over SPI with SS software control, In my design I have left the I/O 5 of the TRF7964A as NOT COnnected, my board is already fabricated, so I have a query do we need to connect the I/O_5 to the Host controller for SPI communication with SS.
Pls. help clarify
