Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/MDIOS/MDIOS_DOUTR24#0x0
MDIOS output data register 24
output data sent to MDIO Master during read frames
https://github.com/modm-io/cmsis-svd-stm32