Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32F427/Ethernet_MMC/MMCTIR#0x0
Ethernet MMC transmit interrupt register
TGFSCS
TGFMSCS
TGFS
https://github.com/cmsis-svd/cmsis-svd-data