Status register
| RXNE | Read data register not empty  |  
| CSRNE | Control Buffer register is not empty  |  
| PERR | Parity error  |  
| OVR | Overrun error  |  
| SBD | Synchronization Block Detected  |  
| SYNCD | Synchronization Done  |  
| FERR | Framing error  |  
| SERR | Synchronization error  |  
| TERR | Time-out error  |  
| WIDTH5 | Duration of 5 symbols counted with SPDIF_CLK  |