2 Replies Latest reply on Jul 19, 2010 5:46 AM by ronald.oneal

    Local symbol usage

    ronald.oneal

      I have a design where the blocks to represent one large fpga have been built inside the design as local symbols.  I am now ready to build the Part and associate the block symbols into one cell.  Question is, can I build that Part within the design using the local symbols and keep it specific to the design, or do I have to export those symbols into the Central Library and build that Part outside of the design?

       

      Thanks,

      Ron

        • 1. Re: Local symbol usage
          robert_davies

          Ron,

          In theory you can build the part locally but it is a totally manual process to do so and for a large device not very practical. You can create a new part in the Parts Database created in the Expedition project and create the mapping here, BUT, and it is a big BUT, the symbol data has to be entered manually, that is all pin names and pin numbers have to be created from scratch. If you try to import the symbol into the local PDB you can only reference symbols that come from a Central Library. You could move the symbols into the library temporarily to do the import/mapping and then adjust the PDB as necessary. It would probably be easier just to export the symbols to the library and treat the part as a regular component. Better still, look at the advantages of I/O Designer for managing this process.

          Rob

          • 2. Re: Local symbol usage
            ronald.oneal

            Rob,

             

            Thank you.  I think I'll take the building the the part in the Central Library route but will also definitely look into the I/O Designer process as well.

             

            Thanks again,

            Ron