Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f3/STM32F3x4/HRTIM_Common/DLLCR#0x0
DLL Control Register
DLL Calibration Start
DLL Calibration Enable
DLL Calibration rate
https://github.com/modm-io/cmsis-svd-stm32