Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/STMicroelectronics/STM32F107xx/USB_OTG_DEVICE/DVBUSPULSE#0x0
OTG_FS device VBUS pulsing time register
Device VBUS pulsing time
https://github.com/cmsis-svd/cmsis-svd-data