INT_INV_BIT
value &= ~(TRIG_SEL_BIT | INT_INV_BIT);
value = (value | INT_INV_BIT) & ~TRIG_SEL_BIT;
value = (value | TRIG_SEL_BIT) & ~INT_INV_BIT;
value |= TRIG_SEL_BIT | INT_INV_BIT;