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DP83TG720EVM-MC: 千兆以太网转接器(汽车以太网转标准以太网)使用限制问题

Part Number: DP83TG720EVM-MC

在使用DP83TG720EVM-MC 千兆汽车以太网、标准以太网转换器的过程中,当发送和接收端采用千兆标准以太网时,通讯正常。发送和接收采用百兆标准以太网时,通讯失败。查询说明指南发现适配器不兼容百兆。

请问千兆适配器只能在发送和接收都是千兆网的情况下通信吗,有没有向下兼容的措施或者方案?