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 FPGA pin swap  

Last post Wed, Oct 10 2012 5:23 AM by Alex71. 2 replies.
Started by Alex71 09 Oct 2012 01:35 PM. Topic has 2 replies and 989 views
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  • Tue, Oct 9 2012 1:35 PM

    • Alex71
    • Not Ranked
    • Joined on Tue, Oct 9 2012
    • Posts 2
    • Points 25
    FPGA pin swap Reply

    Here is the problem. I have schematic where  I have 484 pin FPGA.  It is drawn in Allegro Cadance schematic capturing.  So, to tailor it to my need i swapped pins around on FPGA (schematic reuse).  Next what happen is we needed to go to same part but different part number for FPGA.  So, after i used modify command, i lost all swapped pin locations.  I still have a copy of old schematic backed.  Is there is a way to modify some "file" or locations in some of the files using backed old files to fix it easy without going and swap pins manually?  I usse cadence v 16.5.

    • Post Points: 20
  • Tue, Oct 9 2012 5:42 PM

    • redwire
    • Top 10 Contributor
    • Joined on Thu, Jul 17 2008
    • Allen, TX
    • Posts 875
    • Points 13,480
    Re: FPGA pin swap Reply

     I have run into the exact same issue and never found a simple solution.  I used the packager and Allegro files to extract the pin assignments (after the swap).  Then I extracted the schematic pins and did some fancy lookups in Excel and created a new pin map. This allowed me to create a static symbol of the FPGA with the new pin assignments.  Was a bit of work.

    • Post Points: 20
  • Wed, Oct 10 2012 5:23 AM

    • Alex71
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    • Joined on Tue, Oct 9 2012
    • Posts 2
    • Points 25
    Re: FPGA pin swap Reply
    Thank you for replying. Unfortunately I can’t change symbols, they are done by someone else.  I was hoping there is easier way to do this… like file manipulations.
    • Post Points: 5
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Started by Alex71 at 09 Oct 2012 01:35 PM. Topic has 2 replies.