Digital component power savings in a host device and method

摘要

A control arrangement, for example, in a digital component that forms part of a system, draws an input current for its operation and is configured for monitoring an interface for any one of a group of commands and, upon detecting an issued one of the group of commands, operates the component for executing the issued command in an operational mode, and during an idle time on the interface, the control arrangement exclusively monitors the interface for any one of the group of commands such that the input current is limited to a leakage current. The component may draw less than 1 milliamp of current during the idle mode.

主权项

1. A device comprising:
a voltage regulator; and a circuit configured to monitor a host interface for any one of a plurality of different commands directed to the device and to generate an awake signal in direct response to detecting one of the plurality of different commands directed to the device, wherein the detecting is based, at least in part, on a type of the detected command, and wherein generating the awake signal in direct response to detecting one of the plurality of commands is without reference to additional branching logic once one of the plurality of different commands directed to the device is detected, andwherein the voltage regulator is:
coupled to the circuit to receive the awake signal; configured to change from a first state to a second state upon receiving the awake signal; and operably coupled to one or more components of the device and is configured to provide a supply voltage to the one or more of the components when the voltage regulator is changed to the second state.