Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/ETH/ETH_RX_PACKET_SMD_ERR#0x0
MMC Rx packet SMD error register
Rx Packet SMD Error Counter
https://github.com/modm-io/cmsis-svd-stm32