TI中文支持网Part Number:DP83TG720S-Q1
Hi,
In the process of establishing SGMII using DP83TG720S-Q1 and NXP's SJA1110 switch, we found that the connection could not be established.
We have checked and changed the registers of DP83TG720S-Q1 [SGMII_CTRL_1 608h 0x79(write) & SGMII_STATUS Register 60Ah 0x200(read) ].
We tested the case where the two PHYs are connected using SGMII. In this case, the two are in the linkup state, and the transmission is no problem.
Besides, we also tested the connection of SJA1110 SGMII with other chips, confirmed the port can communicate, and ruled out its configuration problem.
So, we want to know if we are ignoring any parameters that prevent the connection from being established.
Looking for your response !
Thank you very much !
Kailyn Chen：
SGMII_CTRL_1 608h 0x79(write).
寄存器是16bit的，608h配置的是0x0079吗？如果是的话，则bit9=0.但是bit9=1的时候 enable SGMII。
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Ma YF：
好的，这个我再确认一下，只关注了自协商部分，谢谢！
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Kailyn Chen：
是的，您这边只是启动了自动协商，但是SGMII mode并未enable。验证下试试。
如还未能解决您的问题，再讨论。
