Interrupt Disable Register
| RXRDY | RXRDY Interrupt Disable |
| TXRDY | TXRDY Interrupt Disable |
| RXBRK | Receiver Break Interrupt Disable |
| ENDRX | End of Receive Buffer Transfer Interrupt Disable (available in all USART modes of operation) |
| ENDTX | End of Transmit Buffer Interrupt Disable (available in all USART modes of operation) |
| OVRE | Overrun Error Interrupt Enable |
| FRAME | Framing Error Interrupt Disable |
| PARE | Parity Error Interrupt Disable |
| TIMEOUT | Time-out Interrupt Disable |
| TXEMPTY | TXEMPTY Interrupt Disable |
| ITER | Max Number of Repetitions Reached Interrupt Disable |
| TXBUFE | Transmit Buffer Empty Interrupt Disable (available in all USART modes of operation) |
| RXBUFF | Receive Buffer Full Interrupt Disable (available in all USART modes of operation) |
| NACK | Non Acknowledge Interrupt Disable |
| RIIC | Ring Indicator Input Change Disable |
| DSRIC | Data Set Ready Input Change Disable |
| DCDIC | Data Carrier Detect Input Change Interrupt Disable |
| CTSIC | Clear to Send Input Change Interrupt Disable |
| MANE | Manchester Error Interrupt Disable |