使用KSZ9031 IC,Ethernet 无法使用1000M Lan

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使用KSZ9031 IC,Ethernet 无法使用1000M Lan

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daqiang
Contributor I

我们使用的是KSZ9031方案,如果设置成10M/100M都没问题,但如果设置成1000M,则无法连接。

路由器是支持1000M的。

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chenw
Contributor II

请问是怎么修复的呢,千兆不可用的情况

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igorpadykov
NXP TechSupport
NXP TechSupport

Translated by Google:

Use KSZ9031 IC, Ethernet can not use the 1000M Lan
We are using KSZ9031 scenario, if set to 10M / 100M no problem, but if set to 1000M, you can not connect.
Router supports the 1000M.

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Hi Guo

suggest to check Table 62. RGMII Signal Switching Specifications IMX6DQCEC

and configure KSZ9031 registers if necessary, like

MMD Address 2h  Register 5h - RGMII RX Data Pad Skew

MMD Address 2h  Register 6h - RGMII TX Data Pad Skew

MMD Address 2h  Register 8h - RGMII Clock Pad Skew

Note, for i.MX6 ENET there is no control on-chip to adjust the delay between

these signals. A delay would need to be implemented at the board level.

Best regards

igor

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daqiang
Contributor I

Hi :

It works now,thanks!

But there is another problem. As we know,IMX6DL ethernet's max speed is 400M,but we can only reach 200M,is there other registers we should adjust?

Thank you!

Regards!

Leo GUo

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