Patent ID: 8140875
Filing Date: 2012-03-20
Classification: G06F,Y02D

Abstract:
1. An integrated circuit apparatus, comprising: a plurality of power domains to which power voltage is separately supplied; a plurality of circuit macros belonging to the plurality of power domains, respectively; a plurality of power switches to conduct or to substantially block power coming from a power circuit and going to the plurality of power domains, respectively; and a power-controlling unit including the following, wherein the power domain register stores first power domain data corresponding to a first external interrupt signal to indicate a first power domain group, and stores second power domain data corresponding to a second external interrupt signal to indicate a second power domain group, and the first external interrupt signal is induced in a given cycle, and the controller is operable to turn on the power switch of the power domain of the communication CPU when the first external interrupt signal is induced, the second external interrupt signal is induced corresponding to an application processing operation, and the controller is operable to turn on the power switch of the power domain of the application CPU when the second external interrupt signal is induced.