Interrupt Mask Register
| CMDRDY | Command Ready Interrupt Mask |
| RXRDY | Receiver Ready Interrupt Mask |
| TXRDY | Transmit Ready Interrupt Mask |
| BLKE | Data Block Ended Interrupt Mask |
| DTIP | Data Transfer in Progress Interrupt Mask |
| NOTBUSY | Data Not Busy Interrupt Mask |
| ENDRX | End of Receive Buffer Interrupt Mask |
| ENDTX | End of Transmit Buffer Interrupt Mask |
| RXBUFF | Receive Buffer Full Interrupt Mask |
| TXBUFE | Transmit Buffer Empty Interrupt Mask |
| RINDE | Response Index Error Interrupt Mask |
| RDIRE | Response Direction Error Interrupt Mask |
| RCRCE | Response CRC Error Interrupt Mask |
| RENDE | Response End Bit Error Interrupt Mask |
| RTOE | Response Time-out Error Interrupt Mask |
| DCRCE | Data CRC Error Interrupt Mask |
| DTOE | Data Time-out Error Interrupt Mask |
| OVRE | Overrun Interrupt Mask |
| UNRE | UnderRun Interrupt Mask |