Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series1/EFM32JG1B/EFM32JG1B100F256IM32/LEUART0/PULSECTRL#0x0
Pulse Control Register
Pulse Width
Pulse Generator/Extender Enable
Pulse Filter
https://github.com/cmsis-svd/cmsis-svd-data