Status Register
| RXP | Rx-Packet available |
| TXP | Tx-Packet space available |
| DXP | Duplex Packet |
| EOT | End Of Transfer |
| TXTF | Transmission Transfer Filled |
| UDR | Underrun at slave transmission mode |
| OVR | Overrun |
| CRCE | CRC Error |
| TIFRE | TI frame format error |
| MODF | Mode Fault |
| SUSP | SUSPend |
| TXC | TxFIFO transmission complete |
| RXPLVL | RxFIFO Packing LeVeL |
| RXWNE | RxFIFO Word Not Empty |
| CTSIZE | Number of data frames remaining in current TSIZE session |