Interrupt Enable Register
| RDRF | Receive Data Register Full Interrupt Enable |
| TDRE | SPI Transmit Data Register Empty Interrupt Enable |
| MODF | Mode Fault Error Interrupt Enable |
| OVRES | Overrun Error Interrupt Enable |
| ENDRX | End of Receive Buffer Interrupt Enable |
| ENDTX | End of Transmit Buffer Interrupt Enable |
| RXBUFF | Receive Buffer Full Interrupt Enable |
| TXBUFE | Transmit Buffer Empty Interrupt Enable |
| NSSR | NSS Rising Interrupt Enable |
| TXEMPTY | Transmission Registers Empty Enable |
| UNDES | Underrun Error Interrupt Enable |