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千兆以太网的PHY(DP83865)进行千兆通信TX_CLK和RX_CLK的时钟会在2.5M和十几兆进行跳变问题

Other Parts Discussed in Thread: DP83865

做了两个设备准备采用千兆以太网的PHY(DP83865)进行千兆通信,两个设备的配置方式均为:

PHY-ID: 1
Auto-neg on
All speeds advertised
Auto-MDIX on
CLK_TO_MAC on
Non-IEEE mode off

原理图见附件

现在的问题:

1、当把台式机的网卡配置为千兆全双工模式时 两个自制设备的TX_CLK和RX_CLK均为25M时钟频率

2、当两个自制设备进行连接时TX_CLK和RX_CLK的时钟会在2.5M和十几兆进行跳变

gj400rdu-gbit.pdf