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Energy efficient method to wake host system for charging battery powered portable devices via bus powered external i/o ports
Energy efficient method to wake host system for charging battery powered portable devices via bus powered external i/o ports
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机译:唤醒主机系统以通过总线供电的外部I / O端口为电池供电的便携式设备充电的节能方法
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摘要
Optimized bus powered peripheral battery charging includes a circuit to initiate a change in an advanced configuration and power interface (ACPI) state in a controller allowing charging of a peripheral device battery, the circuit including a signal converter coupled between an input port and the controller to sense when a the peripheral device battery is coupled to an input port and to restrict the controller from changing ACPI state multiple times for a given peripheral device battery coupling; and a ground loop detector coupled in parallel to the signal converter between the input port and the controller to allow the controller to know that the peripheral device battery has maintained being coupled to the input port.
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