Patent ID: 7194638

Claim:
A device for coupling with a USB signal bus, comprising: a transceiver having a receive data path and a transmit data path, the receive data path coupled with the signal bus for receiving a data signal from the signal bus, and the transmit data path coupled with the signal bus; a component associated with the receive data path for processing the data signal received from the signal bus; power control logic for controlling a power mode of the component, and a clock reference signal; the device being characterized by a power consumption characteristic; wherein the component associated with the receive data path further comprises: a first synchronizer for synchronizing the data signal to the clock reference signal, said first synchronizer being characterized by a first power consumption level; and a second synchronizer for synchronizing the data signal to the clock reference signal, said second synchronizer being characterized by a second power consumption level; wherein said power control logic selectively provides a power-on signal to either said first or said second synchronizer to alter the power consumption characteristic of the device from a first amount associated with the first power consumption level to a second amount associated with the second power consumption level.