用DP83848CVV通讯,原理图没变,新版本修改了layout 走线,目前同样的程序,能读出老版本和新版本DP83848的30个寄存器都是一样的,但是新版本的就是不通讯,PING也不通,指示灯一个常亮一个闪烁。请问如何来排查该原因,做了200套,都有这个问题,请帮忙看下,谢谢!
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