CS4280_CCTL
mem = BA1READ4(sc, CS4280_CCTL);
BA1WRITE4(sc, CS4280_CCTL, mem & ~CCTL_MASK);
cctl = BA1READ4(sc, CS4280_CCTL) & ~CCTL_MASK;
BA1WRITE4(sc, CS4280_CCTL, cctl);
cctl = BA1READ4(sc, CS4280_CCTL) & ~CCTL_MASK;
BA1WRITE4(sc, CS4280_CCTL, cctl);
mem = BA1READ4(sc, CS4280_CCTL);