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DS90UB948-Q1: GPIO口状态

Part Number: DS90UB948-Q1

我们的产品是一个显示屏,使用的是DS90UB948。主机端用的是DS90UB941。主机和显示屏的电源是独立的,两者都有可能先上电。

我想问下如果显示屏单独上电(主机无电),UB948的GPIO口在PDB为低和为高时状态是怎么样的(比如是高电平输出还是输入状态),如果GPIO口有上拉电阻或没有上拉电阻GPIO口的电平是什么样的?