Method and apparatus for entering a low power mode

摘要

A method and apparatus for entering a low power mode is provided. In one embodiment, data processing system ( 10 ) has power control circuitry ( 52 ) which may be used to control power usage in data processing system ( 10 ). Power mode select circuitry ( 84 ) may be used to select a power mode. Depending upon the power mode selected, power control circuitry ( 52 ) may use a cascaded approach to selecting which portions of data processing system ( 10 ) will be powered down, and thus how deeply data processing system ( 10 ) will be powered down.