SSCR1_SCLKDIR
chip->cr1 |= SSCR1_SCLKDIR;
SSCR1_SCLKDIR |
| SSCR1_ECRA | SSCR1_ECRB | SSCR1_SCLKDIR \
| SSCR1_ECRA | SSCR1_ECRB | SSCR1_SCLKDIR \
~(SSCR1_SCLKDIR | SSCR1_SFRMDIR | SSCR1_SCFR |
sscr1 |= SSCR1_SCLKDIR | SSCR1_SFRMDIR | SSCR1_SCFR;
sscr1 |= SSCR1_SCLKDIR | SSCR1_SCFR;