CKS=MCK, START=CONTINUOUS, CKO=NONE, CKG=CONTINUOUS
Transmit Clock Mode Register
| CKS | Transmit Clock Selection 0 (MCK): Divided Clock 1 (RK): RK Clock signal 2 (TK): TK pin  |  
| CKO | Transmit Clock Output Mode Selection 0 (NONE): None, TK pin is an input 1 (CONTINUOUS): Continuous Transmit Clock, TK pin is an output 2 (TRANSFER): Transmit Clock only during data transfers, TK pin is an output  |  
| CKI | Transmit Clock Inversion  |  
| CKG | Transmit Clock Gating Selection 0 (CONTINUOUS): None 1 (EN_TF_LOW): Transmit Clock enabled only if TF Low 2 (EN_TF_HIGH): Transmit Clock enabled only if TF High  |  
| START | Transmit Start Selection 0 (CONTINUOUS): Continuous, as soon as a word is written in the SSC_THR (if Transmit is enabled), and immediately after the end of transfer of the previous data 1 (RECEIVE): Receive start 2 (TF_LOW): Detection of a low level on TF signal 3 (TF_HIGH): Detection of a high level on TF signal 4 (TF_FALLING): Detection of a falling edge on TF signal 5 (TF_RISING): Detection of a rising edge on TF signal 6 (TF_LEVEL): Detection of any level change on TF signal 7 (TF_EDGE): Detection of any edge on TF signal  |  
| STTDLY | Transmit Start Delay  |  
| PERIOD | Transmit Period Divider Selection  |