9.3.5.7 USB_IRQ_REG Bit Definitions
| Bit Number | Name | Reset Value | Function |
|---|---|---|---|
| 7 | VBus Error | 0 | Set when VBus drops below the VBus valid threshold during a session. Only valid when the USB controller is an A device. |
| 6 | Sess Req | 0 | Set when session request signaling has been detected. Only valid when the USB controller is an A device. |
| 5 | Discon | 0 | Set in Host mode when a device disconnection is detected. Set in Peripheral mode when a session ends. Valid at all transaction speeds. |
| 4 | Conn | 0 | Set when a device connection is detected. Only valid in Host mode. Valid at all transaction speeds. |
| 3 | SOF | 0 | Set when a new frame starts. |
| 2 | Reset | 0 | Set in Peripheral mode when reset signaling is detected on the bus. |
| Babble | Set in Host mode when babble is detected. Only active after first SOF has been sent. | ||
| 1 | Resume | 0 | Set when resume signaling is detected on the bus while the USB controller is in Suspend mode. |
| 0 | Suspend | 0 | Set when suspend signaling is detected on the bus. Only valid in Peripheral mode. |