Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32n6/STM32N645/OTG1/OTG_DSTS#0x0
ENUMSPD=B_0x0
OTG device status register
Suspend status
Enumerated speed
0 (B_0x0): High Speed
1 (B_0x1): Full Speed
Erratic error
Frame number of the received SOF
Device line status
https://github.com/modm-io/cmsis-svd-stm32