A Configuration 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 |
| OUTDRIV | Output drive |
| SAIAEN | Audio block A enable |
| DMAEN | DMA enable |
| NODIV | No divider |
| MCKDIV | Master clock divider |
| OSR | OSR |
| MCKEN | MCKEN |