Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/SiM3_NRND/SIM3L168_A/PLL_0/DIVIDER#0x0
Reference Divider Setting
M Divider Value.
N Divider Value.
https://github.com/cmsis-svd/cmsis-svd-data