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16.2,Allegro PCB Editor,HDI

  • 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
  • Setting up blind/buried vias, via-in-pad

    What is the best/correct way to set up a design for using blind and buried vias and via-in-pad (adding them to the board, setting up DRC's and CM, using them, etc)? I'm reading the available HDI docs but it seems that some of the details aren't covered. (16.2) Thanks!
    Posted to PCB Design (Forum) by EdJP on Fri, Apr 23 2010
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