Patent ID: 6687883
Filing Date: 2004-02-03
Classification: G06F,Y02D

Abstract:
A method for reducing leakage power of a logic network comprising a plurality of nets, comprising the steps of:a) determining observability don't care (ODC) information for one or more first nets in said logic network, said ODC information representing a set of input values for which the values at said first nets have no influence on any output value of the logic network, said ODC information being used for identifying sleep states for first nets of said logic network; b) performing a simulation to force at least one selected net from said first nets to a particular value during at least a portion of at least one of said identified sleep states and performing a probabilistic analysis to determine at least one net in which expected power consumption will be reduced; and c) forcing said selected nets to said particular value for said portion of a sleep state when expected power consumption is reduced.