i have used SSI1 module over Port D .
SSICLK-PD0 (Pin no 61)
SSIRX -PD2 (Pin no 63)
SSITX-PD3 (Pin no 64)
Chip select - PD1 (Pin no 62)
I am confused that we have to compulsory configure CS pin as SSI1Fss or we can configure CS pin as GPIO OUTPUT pin and drive it manually?