Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f7/STM32F767/DFSDM/DFSDM2_CNVTIMR#0x0
DFSDM conversion timer register
28-bit timer counting conversion time
https://github.com/modm-io/cmsis-svd-stm32