HUB, OPERATION SYSTEM, AND CONTROL METHOD THEREOF

摘要

A hub including an up-stream port, at least one down-stream port, a state-determining unit, and a control unit is provided. The up-stream port is configured to be coupled to a host device. The down-stream port is configured to be coupled to at least one peripheral device. The state-determining unit is coupled to the down-stream port and generates a determination result according to a level of a pin of the down-stream port. The control unit is coupled between the up-stream port and the state-determining unit. When the host device sends a sleep request, the control unit determines whether the peripheral device is operating in a specific mode according to the determination result. When the peripheral device is operating in the specific mode, the control unit provides an unready response to the host device.

主权项

1. A hub, comprising:
a up-stream port configured to be coupled to a host device; at least one down-stream port configured to be coupled to at least one peripheral device; a state-determining unit coupled to the down-stream port and generating a determination result according to a level of a pin of the down-stream port; and a control unit coupled between the up-stream port and the state-determining unit; wherein when the host device sends a sleep request, the control unit determines whether the peripheral device is operating in a specific mode according to the determination result, and when the peripheral device is operating in the specific mode, the control unit provides an unready response to the host device.