USB interrupt enable (device mode)
| UE | USB interrupt enable When this bit is one, and the USBINT bit in the USBSTS register is one, the host/device controller will issue an interrupt at the next interrupt threshold. The interrupt is acknowledged by software clearing the USBINT bit in USBSTS. |
| UEE | USB error interrupt enable When this bit is a one, and the USBERRINT bit in the USBSTS register is a one, the host/device controller will issue an interrupt at the next interrupt threshold. The interrupt is acknowledged by software clearing the USBERRINT bit in the USBSTS register. |
| PCE | Port change detect enable When this bit is a one, and the Port Change Detect bit in the USBSTS register is a one, the host/device controller will issue an interrupt. The interrupt is acknowledged by software clearing the Port Change Detect bit in USBSTS. |
| RESERVED | Not used by the Device controller. |
| RESERVED | Reserved |
| RESERVED | Not used by the Device controller. |
| URE | USB reset enable When this bit is a one, and the USB Reset Received bit in the USBSTS register is a one, the device controller will issue an interrupt. The interrupt is acknowledged by software clearing the USB Reset Received bit. |
| SRE | SOF received enable When this bit is a one, and the SOF Received bit in the USBSTS register is a one, the device controller will issue an interrupt. The interrupt is acknowledged by software clearing the SOF Received bit. |
| SLE | Sleep enable When this bit is a one, and the DCSuspend bit in the USBSTS register transitions, the device controller will issue an interrupt. The interrupt is acknowledged by software writing a one to the DCSuspend bit. |
| RESERVED | Reserved |
| NAKE | NAK interrupt enable This bit is set by software if it wants to enable the hardware interrupt for the NAK Interrupt bit. If both this bit and the corresponding NAK Interrupt bit are set, a hardware interrupt is generated. |
| RESERVED | Reserved |
| UAIE | Not used by the Device controller. |
| UPIA | Not used by the Device controller. |
| RESERVED | Reserved |