BConfiguration register 1
| MODE | Audio block mode |
| PRTCFG | Protocol configuration |
| DS | Data size |
| LSBFIRST | Least significant bit first |
| CKSTR | Clock strobing edge |
| SYNCEN | Synchronization enable |
| MONO | Mono mode |
| OutDri | Output drive |
| SAIBEN | Audio block B enable |
| DMAEN | DMA enable |
| NODIV | No divider |
| MCJDIV | Master clock divider |
| OSR | OSR |
| MCKEN | MCKEN |