I need to find the documentation for using the SS pin in slave mode.
The RM is here and there referring to the SS signal, but
1) I don t see where this pin is, maybe is overlapped with one PCS ????
2) Is it mandatory to use it? Is somewhere written how to select/deselect the usage?
3) If I choice not to use, how to handle the transfer initiated and aborted by a master? (the fraction of data..)