Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Canaan Inc./K210/I2S0/rxffr#0x0
rxffr=not_flush
Receiver Block FIFO Reset Register
Receiver FIFO reset
0 (not_flush): Not flush FIFO
1 (flush): Flush FIFO
https://github.com/cmsis-svd/cmsis-svd-data