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routing diff pair? firewire conn/chips

weissj3

Anyone have any tips, width, spacing, sizes or anything for routing fire wire traces?

Havn't had to do any in my 30 yrs of layout till now. Only thing I was told was make them diff pairs with no vias and as short as possible from termination networks (st-1394 1 port) to the fire wire chip  TI TSB41LV06APZP

TIA

Rgds

Joe

  • redwire

    Unfortunately it sounds like your engineer doesn't know what he/she's doing.  I'm a EE that specializes in layout/sig integrity and I get these kind of 'dumb' requests all the time.  A good portion of my customers (EE's also) are quite knowledgeable about routing and we route 10GHz lines with vias (gasp!) and they work great. There is an art to doing so that I won't give away freely on a forum.

    There are many elegant solutions with and without vias but a blanket statement for a diff pair is meaningless.

    If you want to contact me offline we can discuss but I am no help without knowing your board physical design.

    Regards,
    Bill

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