Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32F7x8/OTG_FS_GLOBAL/OTG_FS_GRXSTSP_Device#0x0
OTG status read and pop register (Device mode)
Endpoint number
Byte count
Data PID
Packet status
Frame number
https://github.com/cmsis-svd/cmsis-svd-data