Patent ID: 8601186
Filing Date: 2013-12-03
Classification: G06F,Y02D

Abstract:
1. A method for managing a host device that includes a control unit and an interface unit linked to each other via a Universal Serial Bus (USB) Transceiver Macrocell Interface (UTMI) Low Pin Interface (ULPI) interface on the basis of a high frequency clock, wherein the interface unit interfaces with a peripheral device via an interface on the basis of the high frequency clock, the method being implemented by the host device, and comprising: detecting that the peripheral device on the interface is in an activation state when the host device is in a suspended state in which the high frequency clock is deactivated; responsive to the detected activation state of the peripheral device, starting a timer on the basis of a low frequency clock; and maintaining, by hardware of the interface unit, the activation state of the peripheral device on the interface, wherein the activation state is maintained on the basis of the high frequency clock before the expiration of a time period associated with the timer and until the host device enters an active operation state.