Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFR32BG22C224F512GM32/SYNTH_S/LPFCTRL1CAL#0x0
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LPF Op1 BW Control in Cal Mode
LPF Op1 Comp Control in Cal Mode
LPF Rfb Value Select in Cal Mode
LPF Rp Value Select in Cal Mode
LPF Rz Value Select in Cal Mode
https://github.com/cmsis-svd/cmsis-svd-data