Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFR32FG1P/EFR32FG1P131F256GM48/GPCRC/INPUTDATAHWORD#0x0
Input 16-bit Data Register
Input Data for 16-bit
https://github.com/cmsis-svd/cmsis-svd-data