Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32H7x5_CM7/Ethernet_MAC/TX_LPI_TRAN_CNTR#0x0
Tx LPI transition counter register
TXLPITRC
https://github.com/cmsis-svd/cmsis-svd-data