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但如果外部器件的供电可能会优先于核心板，如核心板与外部器件是分开两个电源供电，则有可能会发生外部优先核心板的可能。

此时，就必须使用

PMIC_STBY_REQ
信号名引脚
X_102X_nRESET_OUT98

来开关外部器件的电源，以防止外部器件通过IO口为核心板供电，导致故障。

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