Serial audio interface SAI 0x0 0x400 registers BCR1 BCR1 BConfiguration register 1 0x24 0x20 read-write 0x00000040 MCJDIV Master clock divider 20 4 NODIV No divider 19 1 DMAEN DMA enable 17 1 SAIBEN Audio block B enable 16 1 OutDri Output drive 13 1 MONO Mono mode 12 1 SYNCEN Synchronization enable 10 2 CKSTR Clock strobing edge 9 1 LSBFIRST Least significant bit first 8 1 DS Data size 5 3 PRTCFG Protocol configuration 2 2 MODE Audio block mode 0 2 BCR2 BCR2 BConfiguration register 2 0x28 0x20 read-write 0x00000000 COMP Companding mode 14 2 CPL Complement bit 13 1 MUTECN Mute counter 7 6 MUTEVAL Mute value 6 1 MUTE Mute 5 1 TRIS Tristate management on data line 4 1 FFLUS FIFO flush 3 1 FTH FIFO threshold 0 3 BFRCR BFRCR BFRCR 0x2C 0x20 read-write 0x00000007 FSOFF Frame synchronization offset 18 1 FSPOL Frame synchronization polarity 17 1 FSDEF Frame synchronization definition 16 1 FSALL Frame synchronization active level length 8 7 FRL Frame length 0 8 BSLOTR BSLOTR BSlot register 0x30 0x20 read-write 0x00000000 SLOTEN Slot enable 16 16 NBSLOT Number of slots in an audio frame 8 4 SLOTSZ Slot size 6 2 FBOFF First bit offset 0 5 BIM BIM BInterrupt mask register2 0x34 0x20 read-write 0x00000000 LFSDETIE Late frame synchronization detection interrupt enable 6 1 AFSDETIE Anticipated frame synchronization detection interrupt enable 5 1 CNRDYIE Codec not ready interrupt enable 4 1 FREQIE FIFO request interrupt enable 3 1 WCKCFG Wrong clock configuration interrupt enable 2 1 MUTEDET Mute detection interrupt enable 1 1 OVRUDRIE Overrun/underrun interrupt enable 0 1 BSR BSR BStatus register 0x38 0x20 read-only 0x00000000 FLVL FIFO level threshold 16 3 LFSDET Late frame synchronization detection 6 1 AFSDET Anticipated frame synchronization detection 5 1 CNRDY Codec not ready 4 1 FREQ FIFO request 3 1 WCKCFG Wrong clock configuration flag 2 1 MUTEDET Mute detection 1 1 OVRUDR Overrun / underrun 0 1 BCLRFR BCLRFR BClear flag register 0x3C 0x20 write-only 0x00000000 LFSDET Clear late frame synchronization detection flag 6 1 CAFSDET Clear anticipated frame synchronization detection flag 5 1 CNRDY Clear codec not ready flag 4 1 WCKCFG Clear wrong clock configuration flag 2 1 MUTEDET Mute detection flag 1 1 OVRUDR Clear overrun / underrun 0 1 BDR BDR BData register 0x40 0x20 read-write 0x00000000 DATA Data 0 32 ACR1 ACR1 AConfiguration register 1 0x4 0x20 read-write 0x00000040 MCJDIV Master clock divider 20 4 NODIV No divider 19 1 DMAEN DMA enable 17 1 SAIAEN Audio block A enable 16 1 OutDri Output drive 13 1 MONO Mono mode 12 1 SYNCEN Synchronization enable 10 2 CKSTR Clock strobing edge 9 1 LSBFIRST Least significant bit first 8 1 DS Data size 5 3 PRTCFG Protocol configuration 2 2 MODE Audio block mode 0 2 ACR2 ACR2 AConfiguration register 2 0x8 0x20 read-write 0x00000000 COMP Companding mode 14 2 CPL Complement bit 13 1 MUTECN Mute counter 7 6 MUTEVAL Mute value 6 1 MUTE Mute 5 1 TRIS Tristate management on data line 4 1 FFLUS FIFO flush 3 1 FTH FIFO threshold 0 3 AFRCR AFRCR AFRCR 0xC 0x20 read-write 0x00000007 FSOFF Frame synchronization offset 18 1 FSPOL Frame synchronization polarity 17 1 FSDEF Frame synchronization definition 16 1 FSALL Frame synchronization active level length 8 7 FRL Frame length 0 8 ASLOTR ASLOTR ASlot register 0x10 0x20 read-write 0x00000000 SLOTEN Slot enable 16 16 NBSLOT Number of slots in an audio frame 8 4 SLOTSZ Slot size 6 2 FBOFF First bit offset 0 5 AIM AIM AInterrupt mask register2 0x14 0x20 read-write 0x00000000 LFSDET Late frame synchronization detection interrupt enable 6 1 AFSDETIE Anticipated frame synchronization detection interrupt enable 5 1 CNRDYIE Codec not ready interrupt enable 4 1 FREQIE FIFO request interrupt enable 3 1 WCKCFG Wrong clock configuration interrupt enable 2 1 MUTEDET Mute detection interrupt enable 1 1 OVRUDRIE Overrun/underrun interrupt enable 0 1 ASR ASR AStatus register 0x18 0x20 read-write 0x00000000 FLVL FIFO level threshold 16 3 LFSDET Late frame synchronization detection 6 1 AFSDET Anticipated frame synchronization detection 5 1 CNRDY Codec not ready 4 1 FREQ FIFO request 3 1 WCKCFG Wrong clock configuration flag. This bit is read only. 2 1 MUTEDET Mute detection 1 1 OVRUDR Overrun / underrun 0 1 ACLRFR ACLRFR AClear flag register 0x1C 0x20 read-write 0x00000000 LFSDET Clear late frame synchronization detection flag 6 1 CAFSDET Clear anticipated frame synchronization detection flag. 5 1 CNRDY Clear codec not ready flag 4 1 WCKCFG Clear wrong clock configuration flag 2 1 MUTEDET Mute detection flag 1 1 OVRUDR Clear overrun / underrun 0 1 ADR ADR AData register 0x20 0x20 read-write 0x00000000 DATA Data 0 32