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PHY芯片DP83822HF是否支持强制开启光口模式，寄存器该如何配置？如下图3所示的连接方式，光口上有一条光纤链路是连通的，实现报文的单向转发，以达到节约传输链路的效果。谢谢
您好，DP83822 支持fiber mode。 通过strap pin来enable fiber mode，通过寄存器 0x0465 Fiber General Configuration Register (FIBER GENCFG)来检测信号极性：
