Patent ID: 7992020

Claim:
A packaged multi-die integrated circuit, comprising: a first integrated circuit die; the first integrated circuit die operable in a first operational mode; a second integrated circuit die coupled to the first integrated circuit die; the first integrated circuit die having a rate of power consumption that is lower than a rate of power consumption of the second integrated circuit die when the first integrated circuit die is in the first operational mode and the second integrated circuit die is in a second operational mode; and the first integrated circuit die configured for power management of the second integrated circuit die for placing the second integrated circuit die in a standby mode from the second operational mode and for returning the second integrated circuit die to the second operational mode from the standby mode; wherein the second integrated circuit die is further configured to instruct the first integrated circuit die as to one of two or more different states to which to be restored after waking up from the standby mode; wherein the first integrated circuit die is further configured to: store an indicator that identifies the one of the different states in response to the instruction from the second integrated circuit die; access respective sets of stored state data for the two or more different states; and in returning the second integrated circuit die to the second operational mode from the standby mode and in response to the stored indicator, configure the second integrated circuit die with the respective set of state data associated with the one of the different states.