Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32h7/STM32H723/SPDIFRX/FMT0_DR#0x0
Data input register
Parity Error bit
Validity bit
User bit
Channel Status bit
Preamble Type
https://github.com/modm-io/cmsis-svd-stm32