Messages in this thread | | | Subject | Re: CRC errors between mvneta and macb | From | Richard Genoud <> | Date | Mon, 22 Oct 2018 08:51:55 +0200 |
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Le 19/10/2018 à 17:44, Willy Tarreau a écrit : > On Fri, Oct 19, 2018 at 05:15:03PM +0200, Richard Genoud wrote: >> When there's a CRC error, the TXCLK has its polarity inverted... >> That's a clue ! >> >> But this TXCLK (25MHz) is not used on the g35-ek. >> Only the REFCLK/XT2 (50MHz) is used to synchronise the PHY and the macb. >> So I guess that the TXCLK has a role to play to generate TX+/TX- > > Well, just a stupid idea, maybe when this signal is inverted, the TX+/TX- > are desynchronized by half a clock and are not always properly interpreted > on the other side ? > > Willy >
I must admit that I'm not familiar with the PHY internals, I'll have to dig into that.
Richard.
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