DMT_TCLR_START
sc->tclr &= ~(DMT_TCLR_START | DMT_TCLR_AUTOLOAD);
sc->tclr |= DMT_TCLR_START;
sc->tclr &= ~(DMT_TCLR_START | DMT_TCLR_AUTOLOAD);
sc->tclr |= DMT_TCLR_START | DMT_TCLR_AUTOLOAD;
sc->tclr |= DMT_TCLR_START | DMT_TCLR_AUTOLOAD;