ST STM32F205 series Reference Manual page 1106

USB on-the-go high-speed (OTG_HS)
The peripheral core provides the following status checks and interrupt generation:
•
Transfer completed interrupt, indicating that data transfer has completed on both the
application (AHB) and USB sides
•
Setup stage done (control-out only)
•
Associated transmit FIFO is half or completely empty (in endpoints)
•
NAK acknowledge transmitted to the host (isochronous-in only)
•
IN token received when Tx-FIFO was empty (bulk-in/interrupt-in only)
•
OUT token received when endpoint was not yet enabled
•
Babble error condition detected
•
Endpoint disable by application is effective
•
Endpoint NAK by application is effective (isochronous-in only)
•
More than 3 back-to-back setup packets received (control-out only)
•
Timeout condition detected (control-in only)
•
Isochronous out packet dropped without generating an interrupt
1106/1378 RM0033 Rev 8
RM0033