| 摘要 |
<p>Universal serial bus (USB) plug-in event detection systems and methods are disclosed herein. An exemplary USB system includes a USB interface and a USB capacitive-sensing detection module coupled with a data line of the USB interface. The USB capacitance-sensing detection module monitors a change in capacitance on the data line to detect USB plug-in events. USB capacitance-sensing detection module can detect a USB plug-in event when the USB interface is in a powered-down state. The USB system can be configured to power up the USB interface upon detecting the USB plug-in event. The USB system can further include a USB host. The USB host can be in a standby or hibernation mode (minimum power state) when the USB capacitive-sensing detection module detects the USB plug-in event, and the USB system can be configured to wake-up the USB host from the standby or hibernation mode upon detecting the USB plug-in event.</p> |
