Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/WGM160/WGM160PX22KGA3/I2C2/RXDOUBLEP#0x0
Receive Buffer Double Data Peek Register
RX Data 0 Peek
RX Data 1 Peek
https://github.com/cmsis-svd/cmsis-svd-data