How to solve the LVS error :"unable to descend into any of the views defined in the view list"

It's International post-in-the-wrong-forum day today (the second I've had to deal with in a few minutes - I'm sure there will be more). Posting in the "Feedback, Suggestions, and Questions" isn't going to get you anywhere, since that is a forum intended for issues with the forum system itself, not for technical questions.

The error gives quite a few clues. Presumably you're trying to create a CDL netlist using the auCdl netlister. So, look in the schematic for CELLPMAMTJ and find instance I3. Note down (use Edit Properties) what the library, cell and view name of the instance (presumably the view name is "symbol") and then in the library manager look at that lib/cell. What views are available? It's telling  you that there is not an auCdl nor a schematic view for this cell, and so it doesn't know what to descend into for that component.

If you show me what is there (please post the info), I might be able to give you a suggestion...

Regards,

Andrew.

Thanks for your patience and reply. Actually there are both "schematic“ and ”symbol“ view available.  What should I do now?  Thanks !

You're showing cellPMAMTJ, whereas I was asking about whatever instance I3 is within cellPMAMTJ which is what the error message is about. It doesn't surprise me that there's a schematic for cellPMAMTJ because it wouldn't have got as far as complaining about instance I3 otherwise...

So please check what I3 is an instance of, and show the views available for whatever that lib/cell is for that instance.

Regards,

Andrew.

Hi Andrew,

Thanks for your patience. I've checked I3 instance and as you said, it only has the veriloga and symbol view. So how cam I add an auCdl  view for it ?

Regards,

Justing.

I have added a config view follow the cadence guide about "creating a config view for auCdl ", but it still doesn't works.

Hi Justing,

In order to be able to run LVS, you need an auCDL stop view on your primitives. The view itself can be just a copy of the symbol. However, you would need all the CDF information for your CDL netlister, including netlist procedure, terminal mappings ...etc. Generally speaking, your foundry is supposed to provide all of this in their primitive library as part of their PDK. I would highly recommend speaking with your foundry partners for more information. 

Riad.

I guess it rather depends on what this instance is supposed to be. Currently it contains a behavioural model - does it correspond to a physical component (i.e. is it a primitive part of a design kit representing a transistor, resistor, capacitor etc)? It's not just a matter of creating a config - you normally need to provide a stopping view (auCdl) and the corresponding CDF to say how to netlist it, but then you'd also need your LVS rules to also know what to do with that device. Or maybe there's supposed to be a schematic for this cell? I would contact whoever created cellPMAMTJ and/or whoever created the component I3 that you're using to determine what the right way forward is.

Regards,

Andrew.

Ok, I got it. That means the device is not complete, right ?

This is a new device of our own lab design. And it acturally correspond to a resistor. Now we will work on it to complete the device. Thanks for your reply !!

Regards,

Justing.

Hi Riad,

Now we will work on what you have said to complete this device. 

Thanks !

Justing