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auto router,layers

  • PCB autorouter(spectraa) not converging

    Hi, I am making my first pcb with a xilinx fpga device(256 pin BGA package).I am simply connecting the all I/O's to 4 standard 40 pin connectors.Are padstacks necessary for PCB routing??.I have drawn the schematic in Capture imported it to Layout_Plus and autorouted it. But after 3 hours of autorouting...
    Posted to PCB Design (Forum) by bennyn1 on Thu, Sep 2 2010
  • autorouter layer costs

    in allegro 16.0, is there any way to set a higher/lower cost for routing on a particular layer? if so, how? can this be done with a "Do File"? are there any good tutorials out there on Do Files? Thanks
    Posted to PCB Design (Forum) by sharted on Wed, Jun 30 2010
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