From AT91RM9200 datasheet it is not clear if SSC can be interfaced in a Texas Instrument compatible way, i.e:
Transmit:
as soon TF sends an OUTPUT pulse 1 TK cycle wide,
TD sends 16 data bit in 16 TK cycles
Receive:
as soon RF receives an INPUT pulse 1 RK wide,
RD receives 16 data bits in 16 TR cycles

Note:
For higher data rates new TF and RF pulses can time match previous data last bit.

Thank you for your attention.

Hi Misha
I advise to check the errata sheet about the SSC. I think that the TX is right however the Rx need some limitation.

JPP