POWER CONTROL

摘要

As may be implemented in accordance with one or more embodiments, an event manager provides control of a battery-powered internal power supply. The power supply has a control port that receives a control signal for activating and deactivating the internal power supply, and one or more output ports for providing a power signal. The event manager includes a plurality of system-event circuits that detect activity signals corresponding to a respective one of a plurality of system events. An event validation circuit, which is powered by the power signal, provides a validation signal that is based upon an activity signal detected by the event manager circuit and that indicates that the internal power supply should provide the power signal in a non-sleep power-operation mode.

主权项

1. A circuit comprising:
an internal power supply configured and arranged to be powered by a battery and including
a control port configured to receive a control signal for activating and deactivating the internal power supply, andat least one output port configured and arranged to provide a power signal; an event manager circuit including a plurality of system-event circuits, each of the system-event circuits configured and arranged to detect activity signals corresponding to a respective one of a plurality of system events; and an event validation circuit configured and arranged to be powered by the power signal and to provide a validation signal based upon an activity signal detected by the event manager circuit, and to indicate that the internal power supply should provide the power signal in a non-sleep power-operation mode.