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DP83867E 电气特性咨询

Other Parts Discussed in Thread: DP83867E

最近调试带有DP83867E板卡,发现寄存器0x0031是10B1,正常是10B0,即没有mirror,然后修改该寄存器,soft-reset后没起作用

我注意到一个电气问题,时钟是1.8v的25M,那么这个vddio的输入电源可以是3.3v,2.5v,1.8v。我必须和时钟的电平保持一致吗,即vddio也必须是1.8v