This register indicates the status of an endpoint with respect to USB- and AHB-related events. It is shown in Figure724. The application must read this register when the IN endpoints interrupt bit of the core interrupt register (IEPINT in GINTSTS) is set. Before the application can read this register, it must first read the device all endpoints interrupt (DAINT) register to get the exact endpoint number for the device endpoint-x interrupt register. The application must clear the appropriate bit in this register to clear the corresponding bits in the DAINT and GINTSTS registers.
| XFRC | XFRC |
| EPDISD | EPDISD |
| TOC | TOC |
| ITTXFE | ITTXFE |
| INEPNM | INEPNM |
| INEPNE | INEPNE |
| TXFE | TXFE |
| PKTDRPSTS | PKTDRPSTS |
| NAK | NAK |