Method and system for providing a communication bus within a portable computing device (pcd) that supports a low power mode

Abstract

A method and system for managing a bus system within a portable computing device (PCD) during a low power mode includes powering the bus system with a limited portable power supply. The method may further include receiving a first signal indicating that one or more endpoints of the bus system are entering into a low power mode. The method may also include receiving a second signal indicating how many communication links that will be supported by the bus system during the low power mode. And the method may include determining if a clock coupled to a transmission line of the bus system should function as a clock during the low power mode or if the clock should function as a clock driver during the low power mode. When a clock functions as a clock driver, then one or more elements of the clock may be turned-off/shut-off.

Dependencies are inferred from the claim text.