SHREG_SCBRR
SHREG_SCBRR = LOW_SPEED;
SHREG_SCBRR = LOW_SPEED;
SHREG_SCBRR = LOW_SPEED;
SHREG_SCBRR = MID_SPEED;
SHREG_SCBRR = LOW_SPEED;
SHREG_SCBRR = MID_SPEED;
SHREG_SCBRR = LOW_SPEED;
SHREG_SCBRR = MID_SPEED;
SHREG_SCBRR = LOW_SPEED;
SHREG_SCBRR = divrnd(sh_clock_get_pclock(), 32 * bps) - 1;