Interrupt clear bits
| RXFIFO_FULL_INT_CLR | Set this bit to clear UART_THE RXFIFO_FULL_INT interrupt. |
| TXFIFO_EMPTY_INT_CLR | Set this bit to clear UART_TXFIFO_EMPTY_INT interrupt. |
| PARITY_ERR_INT_CLR | Set this bit to clear UART_PARITY_ERR_INT interrupt. |
| FRM_ERR_INT_CLR | Set this bit to clear UART_FRM_ERR_INT interrupt. |
| RXFIFO_OVF_INT_CLR | Set this bit to clear UART_UART_RXFIFO_OVF_INT interrupt. |
| DSR_CHG_INT_CLR | Set this bit to clear UART_DSR_CHG_INT interrupt. |
| CTS_CHG_INT_CLR | Set this bit to clear UART_CTS_CHG_INT interrupt. |
| BRK_DET_INT_CLR | Set this bit to clear UART_BRK_DET_INT interrupt. |
| RXFIFO_TOUT_INT_CLR | Set this bit to clear UART_RXFIFO_TOUT_INT interrupt. |
| SW_XON_INT_CLR | Set this bit to clear UART_SW_XON_INT interrupt. |
| SW_XOFF_INT_CLR | Set this bit to clear UART_SW_XOFF_INT interrupt. |
| GLITCH_DET_INT_CLR | Set this bit to clear UART_GLITCH_DET_INT interrupt. |
| TX_BRK_DONE_INT_CLR | Set this bit to clear UART_TX_BRK_DONE_INT interrupt. |
| TX_BRK_IDLE_DONE_INT_CLR | Set this bit to clear UART_TX_BRK_IDLE_DONE_INT interrupt. |
| TX_DONE_INT_CLR | Set this bit to clear UART_TX_DONE_INT interrupt. |
| RS485_PARITY_ERR_INT_CLR | Set this bit to clear UART_RS485_PARITY_ERR_INT interrupt. |
| RS485_FRM_ERR_INT_CLR | Set this bit to clear UART_RS485_FRM_ERR_INT interrupt. |
| RS485_CLASH_INT_CLR | Set this bit to clear UART_RS485_CLASH_INT interrupt. |
| AT_CMD_CHAR_DET_INT_CLR | Set this bit to clear UART_AT_CMD_CHAR_DET_INT interrupt. |
| WAKEUP_INT_CLR | Set this bit to clear UART_WAKEUP_INT interrupt. |