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DP83TG720S-Q1: 无法与外部正常收发

Part Number: DP83TG720S-Q1


在自己设计的测试板上测试DP83TG720,目前已调通analog loopback,如下图

但与外部的收发无法成功,请问1.在analog loopback下,是否会通过MDI接口往外发送数据,?2.在analog loopback调通的情况下,还需要哪些步骤才能建立正常通信?3.RGMII的时钟延迟会否影响通信?