GEI 82543 auto negotiation issue - VxWorks

This is a discussion on GEI 82543 auto negotiation issue - VxWorks ; Auto negotiation between two boards on my system (over copper GigE interface with PRO1000_546_BOARD) have multiple issues. 1. Most of the time, it works. But as per MII debug it takes more than 100 tries. 2. Occasionally auto-negotiation fails. In ...

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Thread: GEI 82543 auto negotiation issue

  1. GEI 82543 auto negotiation issue

    Auto negotiation between two boards on my system (over copper GigE
    interface with PRO1000_546_BOARD) have multiple issues.

    1. Most of the time, it works. But as per MII debug it takes more than
    100 tries.

    2. Occasionally auto-negotiation fails. In that case, MII
    initialization tries to force the link. But forcing never seems to
    work. Either I get the "check cable connection" error or even without
    the errors, the boards doesn't talk to each other.

    So if auto-negotiation fails, I'm in for big trouble. Any pointers?

    thanks,
    arun


  2. Re: GEI 82543 auto negotiation issue

    I had similar auto-negotiation problem on 82547 and may be applicable
    to you. Bits 9:8 of CTRL_EXT are reserved and should be set to 01 not
    00 as mentioned in previous Intel Yellow Document. This is now fixed in
    latest Intel public document available at.
    http://developer.intel.com/design/ne...4x_GBe_SDM.htm

    HTH,

    Rajesh


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