AnsweredAssumed Answered

AR8031 on I.MX6 WORKS ONLY 10/100M AND LOSES PACKAGES WITH GIGA ROUTER OR SWITCH

Question asked by foxmaze on Feb 16, 2016
Latest reply on May 3, 2016 by 楚东 黄

Hello all,

 

I have designed a customer board with AR8031 PHY and I.MX6DL, and found the board only works with 10/100M stably, when connected to a GIGA-bit router or switch, the connection is very slow and many packages are lost.

Is there anyone with the same issue? Circuit of this portion is strictly following with the SABRESDP reference, only the RGMII signal traces are a little bit longer of up to 4000mils comparing the reference of  ~1700mils. Not sure this is the root cause. 125M clock is there and enhancing the VDDIO_REG of AR8031 to 2.5V behaves the same thing.

Can anyone help with this issue? Thanks.

 

Mling

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