Interrupt Enable Register
| MB0 | Mailbox 0 Interrupt Enable |
| MB1 | Mailbox 1 Interrupt Enable |
| MB2 | Mailbox 2 Interrupt Enable |
| MB3 | Mailbox 3 Interrupt Enable |
| MB4 | Mailbox 4 Interrupt Enable |
| MB5 | Mailbox 5 Interrupt Enable |
| MB6 | Mailbox 6 Interrupt Enable |
| MB7 | Mailbox 7 Interrupt Enable |
| ERRA | Error Active Mode Interrupt Enable |
| WARN | Warning Limit Interrupt Enable |
| ERRP | Error Passive Mode Interrupt Enable |
| BOFF | Bus Off Mode Interrupt Enable |
| SLEEP | Sleep Interrupt Enable |
| WAKEUP | Wakeup Interrupt Enable |
| TOVF | Timer Overflow Interrupt Enable |
| TSTP | TimeStamp Interrupt Enable |
| CERR | CRC Error Interrupt Enable |
| SERR | Stuffing Error Interrupt Enable |
| AERR | Acknowledgment Error Interrupt Enable |
| FERR | Form Error Interrupt Enable |
| BERR | Bit Error Interrupt Enable |