Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32H7x5_CM7/OTG1_HS_HOST/OTG_HS_HCTSIZ1#0x0
OTG_HS host channel-1 transfer size register
Transfer size
Packet count
Data PID
https://github.com/cmsis-svd/cmsis-svd-data