Datasheet

289
32133D–11/2011
UC3D
Figure 19-4. Pad events
The Suspend Interrupt bit in the Device Global Interrupt register (UDINT.SUSP) is set and the
Wakeup Interrupt (UDINT.WAKEUP) bit is cleared when a USB Suspend state has been
detected on the USB bus. This event automatically puts the USB pad in the Idle state. The
detection of a non-idle event sets WAKEUP, clears SUSP, and wakes the USB pad.
The pad goes to the Idle state if the module is disabled or if UDCON.DETACH is written to one.
It returns to the Active state when USBCON.USBE is written to one and DETACH is written to
zero.
SUSP
Suspend detected Cleared on Wakeup
Wakeup detected Cleared by software to acknowledge the interrupt
WAKEUP
PAD state
Active
Idle
Active