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qwitza's avatar
qwitza
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

Calculate skew timing with Cyclone V and ksz9031

hello, i have troubles with the ethernet bandwith and retransmissions (ack). after some diagnostic i think it is an timing issue. the wire length from the fpga -> knz9031 is: mil ...
Nurina's avatar
Nurina
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hello,


The wire lengths in your PCB are all the same right?

Is there resistors in every wire? Where do you have this resistor?


Regards,

Nurina


  • qwitza's avatar
    qwitza
    Icon for Occasional Contributor rankOccasional Contributor
    3 years ago

    Hello,

    the wire length is in my first post, and yes they have all very near the same length.

    the ksz9031 and the cyclone v are on the top layer, the resistors are on the bottom layer. the resistors are placed near the ksz9031.

    thanks for your work, and answer