Reception Interrupt Enable Register
| RFFE | RX-FIFO full detection interrupt enable bit |
| RFEE | RX-FIFO and shift register empty-state detection interrupt enable bit |
| RFOE | RX-FIFO overrun detection interrupt enable bit |
| RFUE | RX-FIFO underrun detection interrupt enable bit |
| RFLETE | RX-FIFO-less-than-or-equal-to-threshold detection interrupt enable bit |
| RFMTE | RX-FIFO-exceeded-threshold detection interrupt enable bit |
| RSSRE | Slave select released detection interrupt enable bit |