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Cadence to Hierarchical PDF

Drwinco

I am trying to lend some help in reviewing a customer's design. They are providing bookmarked PDF output file from Cadence schematics however some of the hierarchy are RTL generated which makes for very dense drawings. The result is I lose the ability to read wire names, pin names and instance names in some of the higher level blocks. Is there any way to increase the resolution in a VIrtuoso schematic to PDF so as not to lose the pin/instance and wire name information? I understand that in the cdsplotinit file you can specify the dots per inch DPI resolution, page size etc for plotting and that this is then used in converting the .ps file to PDF. Also is there a tool that Cadence has that will allow traversable hierarchy in PDF or is that the bookmark scenario?

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  • You said: I assume that if you can zoom in and see the information on the Cadence side then it should appear in the postscript file and then the converted PDF

    This is not correct. If you still cannot read the data, you'll need to increase the resolution. I do not know if there is a limit, you'll just have to try. The reason I sent all six examples was so that you could see how the numbers were determined. Take a look at PDF_6000dpiB as an example. This is printing at a resolution of 6000. A paper size of B is 11x17. The paperSize parameter values are using a 0.25" margin. Thus, 11x6000 = 66000 or 63000 + 1500 + 1500 (two margins). Likewise 17x6000 = 102000 or 99000 + 1500 + 1500.

    Try a resolution of 24000 if you think you need 4 times more resolution and just do the math for an 11x17 paper. I don't think your paper size really matters since you are not printing. You basically need more than 63000x99000, so try some bigger numbers. If it fails, you'll have your answer about whether or not there is a limitation.

    Derek

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  • You said: I assume that if you can zoom in and see the information on the Cadence side then it should appear in the postscript file and then the converted PDF

    This is not correct. If you still cannot read the data, you'll need to increase the resolution. I do not know if there is a limit, you'll just have to try. The reason I sent all six examples was so that you could see how the numbers were determined. Take a look at PDF_6000dpiB as an example. This is printing at a resolution of 6000. A paper size of B is 11x17. The paperSize parameter values are using a 0.25" margin. Thus, 11x6000 = 66000 or 63000 + 1500 + 1500 (two margins). Likewise 17x6000 = 102000 or 99000 + 1500 + 1500.

    Try a resolution of 24000 if you think you need 4 times more resolution and just do the math for an 11x17 paper. I don't think your paper size really matters since you are not printing. You basically need more than 63000x99000, so try some bigger numbers. If it fails, you'll have your answer about whether or not there is a limitation.

    Derek

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