Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Renesas Electronics/R7FA6M1AD/USBFS/FRMNUM#0x0
OVRN=0, CRCE=0
Frame Number Register
Frame NumberLatest frame number
Receive Data Error
0 (0): No error
1 (1): An error occurred
Overrun/Underrun Detection Status
https://github.com/cmsis-svd/cmsis-svd-data