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CDF issues

Arafat01

Hey,

I have a Library with several cells.

Some of these cells have different ports in the symbols and different ports in the CDF port list.

So when I perform a CDL out the portlist is diff from CDF port list.

The LVS is not clean because of this.

These symbols where not freshly created when a modification was made to the schematic but were just modified dueto this CDF did not get updated.

Is there any possible way to update the CDF portlist directly from the existing symbols.

Thank You

Parents

  • Hey Andrew,

    Thanks for responding.

    Well thats the scenario with me. The actual symbol has more terminals compared to the CDF. So the CDL reverts to the built-in order and generates a port list based on the schematic. The CDL does has all the ports from schematic.

    I did an LVS on a top cell which has all the cells from this library as instantiations.

    For cadence version 6.1.5-64b.500.16.2. The additional ports (the ones not in CDF list)  were listed in the end of CDL portlist. This did not caused any issue with LVS. It was clean.

    Now for cadence version 6.1.1-64b.500.10. The CDL has a the additional ports (the ones not in CDF list) listed anywhere in the list. Due to this the LVS is not clean for same CDL. As the port is diiferent.

    So, i thought a solution to this can be updating the CDF from the symbol to that everywhere the port list is same.

    Is this the right way to proceed?

Reply

  • Hey Andrew,

    Thanks for responding.

    Well thats the scenario with me. The actual symbol has more terminals compared to the CDF. So the CDL reverts to the built-in order and generates a port list based on the schematic. The CDL does has all the ports from schematic.

    I did an LVS on a top cell which has all the cells from this library as instantiations.

    For cadence version 6.1.5-64b.500.16.2. The additional ports (the ones not in CDF list)  were listed in the end of CDL portlist. This did not caused any issue with LVS. It was clean.

    Now for cadence version 6.1.1-64b.500.10. The CDL has a the additional ports (the ones not in CDF list) listed anywhere in the list. Due to this the LVS is not clean for same CDL. As the port is diiferent.

    So, i thought a solution to this can be updating the CDF from the symbol to that everywhere the port list is same.

    Is this the right way to proceed?

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