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DP83640 硬件及驱动问题

Other Parts Discussed in Thread: DP83640

新做了板子,MCU采用stm32f429ig,PHY为dp83640,现在dp83640驱动不起来,我的问题是,如果dp83640供电和时钟输入(25M有源晶振)都没有问题的情况下,会输出TX_CLK和RX_CLK吗?我想确认下硬件是否还存在问题。谢谢。