EDMA_IRQ_MODRT_RX_TIMER_SHIFT
reg &= ~(EDMA_IRQ_MODRT_TIMER_MASK << EDMA_IRQ_MODRT_RX_TIMER_SHIFT);
<< EDMA_IRQ_MODRT_RX_TIMER_SHIFT;
reg |= (EDMA_RX_IMT << EDMA_IRQ_MODRT_RX_TIMER_SHIFT);