Terminal in CDF termOder is invalid (CDL netlist)

Hi Patrik,

Not entirely sure why this would happen, but I would check the auCdl simulation information in the CDF for the component (Tools->CDF->Edit for the cell in question), and then compare the terminals on both the placed view (typically the symbol) and the switch view (which might be auCdl if it's a stopping view, or schematic if not) and make sure they are all consistent.

If that doesn't identify the issue, please contact customer support so that we can take a look. I can't think of anything recent that might cause such an issue, so hopefully it's something that can be resolved by looking at the data.

Regards,

Andrew.

Hello Andrew,

actually what happened is that the cellview where ABC was being instantiated had a lot of floating nets and not all ABC's ports were connected. We fixed the schematic and the issue can be considered solved.

Still, the message from the netlister is misleading, as it seems that the issue lies with ABC itself and not the schematic where it is instantiated. Also, it is not obvious what could make a terminal invalid.

Anyway, thanks for the efforts and best regards,

Patrik

Hi Patrik,

Thinking about this, I suspect it may have been that you had the symbol instantiated when it had fewer pins originally, and then new pins were added later. the schematic containing the instance of ABC then had fewer instTerms and the missing terminals weren't there. Probably doing a check-and-save would fix it. You'd also get a warning when opening the schematic telling you that the symbol was newer than the last time it was checked.

Anyway, glad you've solved it now. The above is just a wild guess without having seen the issue (so it might be something else altogether).

Andrew.

Hello Andrew,

I believe the symbol pins were never changed, but looking at the schematic, I would say that it was that the cellview where ABC was instantiated was created by a script.
I can't believe a human designer would leave all the pins unconnected. It's a pity that the netlister complained about ABC itself and not about the cellview where it is instantiated. I found the root problem because I was running an LVS and some cells could not be compared, for no apparent reason.

Best regards,

Patrik

Hi Patrik,

I completely agree that any error messages should be clear and pinpoint the problem - probably the best thing would be if you could provide the example (to customer support) which had the specific problem so we can check and ensure the error message is as specific as it can be. I could guess at putting together a testcase, but I wouldn't be sure I'd be seeing what you were seeing.

Andrew.

Hello Andrew,

I'll see what I can do. There is a lot of IPs in these testcases.

BR,

Patrik