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Standcell layout scaling problem

heavenevil

I am now doing a standcell library migrating from 90nm to 65nm, only thing I have is the 90nm cell layout, I don't want to draw by hand and I found one post about it http://www.cadence.com/forums/p/13074/19670.aspx.

Andrew gave some code, but I never learned skill so I don't know how to change it, even don't know how to run it, can anyone give me some hint? Thanks a lot

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  • Andrew Beckett

    You'll probably need to change the layer number of the shapes to the layer number in the new process. So you'd need a bit of code which knew about the mapping of the old layer numbers to new layer numbers. You can access and modify the layer number for a shape using shapeId~>layerNum

    Alternatively you could stream it out using the old layer map file, and stream in with the new. But that's a bit clunky.

    Or you could contact Cadence about accessing Virtuoso Layout Migrate, which is a tool designed for this purpose (which will do a whole lot more than simplistic scaling of the data and layer translation; it can ensure that the resulting design is DRC clean and handle differing scaling on different layers).

    Andrew.

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  • Andrew Beckett

    You'll probably need to change the layer number of the shapes to the layer number in the new process. So you'd need a bit of code which knew about the mapping of the old layer numbers to new layer numbers. You can access and modify the layer number for a shape using shapeId~>layerNum

    Alternatively you could stream it out using the old layer map file, and stream in with the new. But that's a bit clunky.

    Or you could contact Cadence about accessing Virtuoso Layout Migrate, which is a tool designed for this purpose (which will do a whole lot more than simplistic scaling of the data and layer translation; it can ensure that the resulting design is DRC clean and handle differing scaling on different layers).

    Andrew.

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