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关于88E1111 link不上!

88e1111做千兆交换,DSP端接的SGMII,另MDI[3:0]接变压器接RJ45(无变压器)接笔记本网口,

①PHY的link_1000灯不亮,link_RX有时会闪烁但几率很低,基本Media这端就没link上

②DSP端可通过MDIO在PC上扫到PHY的存在,但是LINK不通,状态寄存器为0

等于两端都没通啊,什么原因啊?

另外,

①我变压器用的HX5008NL是在DSP板内(6U CPCIE板卡),RJ45网口是在背板(CPCI背板,DSP板通过高速接插件插在上面)接插件下飞的线,会不会由于接插件和飞线导致信号完整性不好无法link上呢?

②88E1111通过125CLK设置输出检测到了125Mhz时钟,应该就能确定其正常工作了吧。

③焊接和点位都没有问题

求大神给点经验指点啊!