使过电压标志置位启动延迟计时器。
如果输出电压大于预定的电压电平,则跨导放大器产生使过电压标志置位的电流。
If the output voltage is less than the predetermined voltage level, a transconductance amplifier generates a current that sets an overload flag.
VPA提供了一个空闲标志,操作系统在空闲的时候将该标志置位,以便向Hypervisor说明其状态。
The VPA consists of an idle flag that the operating system sets when it is idle, to indicate the status to the hypervisor.
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