OTG device IN endpoint 4 interrupt register
| XFRC | Transfer completed interrupt |
| EPDISD | Endpoint disabled interrupt |
| AHBERR | AHB error |
| TOC | Timeout condition |
| ITTXFE | IN token received when Tx FIFO is empty |
| INEPNM | IN token received with EP mismatch |
| INEPNE | IN endpoint NAK effective |
| TXFE | Transmit FIFO empty |
| TXFIFOUDRN | Transmit Fifo Underrun (TxfifoUndrn) |
| PKTDRPSTS | Packet dropped status |
| NAK | NAK input |