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DP83848C: PHY Control Register (PHYCR),第7位如何理解?

Part Number: DP83848C


PHY Control Register (PHYCR), address 0x19h寄存器的第7位如何理解?是忽略掉上电配置时的上下拉,直接输出内部的信号?

比如上电时上拉,那有效就是低电平。使能该位后,有效为高电平?但是测试结果并非如此。