Interrupt & status register
| PE | PE |
| FE | FE |
| NF | NF |
| ORE | ORE |
| IDLE | IDLE |
| RXNE | RXNE |
| TC | TC |
| TXE | TXE |
| LBDF | LBDF |
| CTSIF | CTSIF |
| CTS | CTS |
| RTOF | RTOF |
| EOBF | EOBF |
| UDR | SPI slave underrun error flag |
| ABRE | ABRE |
| ABRF | ABRF |
| BUSY | BUSY |
| CMF | CMF |
| SBKF | SBKF |
| RWU | RWU |
| WUF | WUF |
| TEACK | TEACK |
| REACK | REACK |
| TXFE | TXFIFO Empty |
| RXFF | RXFIFO Full |
| TCBGT | Transmission complete before guard time flag |
| RXFT | RXFIFO threshold flag |
| TXFT | TXFIFO threshold flag |