AR_IMR_S5
REG_SET_BIT(ah, AR_IMR_S5, mask);
REG_CLR_BIT(ah, AR_IMR_S5,
REG_SET_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
REG_CLR_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);