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am335x上电复位配置引脚不正常



am335x上电复位之后,在上升沿读取sysboot配置引脚的状态。但是我的板子sysboot2只连接10K下拉电阻,没连接到任何其它电路的情况下,上电复位后本应为低的却一直是高电平。

有几个配置引脚都是这样,不能拉低。有遇到过这种情况的吗?