Interrupt Enable Register.
| RDA_IEN | Receive Data Available Interrupt Enable. 0 = Mask off INT_RDA 1 = Enable INT_RDA |
| THRE_IEN | Transmit Holding Register Empty Interrupt Enable 0 = Mask off INT_THRE 1 = Enable INT_THRE |
| RLS_IEN | Receive Line Status Interrupt Enable 0 = Mask off INT_RLS 1 = Enable INT_RLS |
| MODEM_IEN | Modem Status Interrupt Enable 0 = Mask off INT_MODEM 1 = Enable INT_MODEM |
| RTO_IEN | Rx Time out Interrupt Enable 0 = Mask off INT_TOUT 1 = Enable INT_TOUT. |
| BUF_ERR_IEN | Buffer Error Interrupt Enable 0 = Mask off INT_Buf_ERR 1 = Enable INT_Buf_ERR |
| WAKE_EN | Wake up CPU function enable 0 = Disable UART wake up CPU function 1 = Enable wake up function, when the system is in deep sleep mode, an external /CTS change will wake up CPU from deep sleep mode. |
| LIN_RX_BRK_IEN | LIN RX Break Field Detected Interrupt Enable 0 = Mask off Lin bus Rx break filed interrupt. 1 = Enable Lin bus Rx break filed interrupt. Note: This field is used for LIN function mode. |
| TIME_OUT_EN | Time-Out Counter Enable 1 = Enable Time-out counter. 0 = Disable Time-out counter. |
| AUTO_RTS_EN | RTS Auto Flow Control Enable 1 = Enable RTS auto flow control. 0 = Disable RTS auto flow control. When RTS auto-flow is enabled, if the number of bytes in the Rx FIFO equals the UA_FCR[RTS_Tri_Lev], the UART will de-assert RTS signal. |
| AUTO_CTS_EN | CTS Auto Flow Control Enable 1 = Enable CTS auto flow control. 0 = Disable CTS auto flow control. When CTS auto-flow is enabled, the UART will send data to external device when CTS input assert (UART will not send data to device until CTS is asserted). |
| DMA_TX_EN | TX DMA Enable 1 = Enable TX DMA. 0 = Disable TX DMA. |
| DMA_RX_EN | Time-Out Counter Enable 1 = Enable RX DMA. 0 = Disable RX DMA. |