这里有sus信号 估计和休眠有关了 意思好像是没插适配器之类的东西就进入类似休眠状态吧
查了下ich8的pdf 这个脚是参考5伏的输入变化范围。这种电源不是预期
被关闭,除非系统是在或台式机的配置不插电主电池被删除或完全排空和交流电源不可用
移动配置
Reference for 5 V tolerance on resume well inputs. This power is not expected
to be shut off unless the system is unplugged in desktop configurations or the
main battery is removed or completely drained and AC power is not available in
mobile configurations.