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IC6 shielding constraint

stuso

Hi there, has anyone managed to use wire editor to route a shielded net in IC6? I'm having an issue setting up the constraint, specifically from this document:

 sourcelink.cadence.com/.../appA.html

and from that document:

 "To create a shielding constraint and set the associated shielding net:

Select the net that is to be shielded.

Note:  If you select multiple nets, and try to apply a Shielding constraint, a consistency check warning message is displayed in the CIW."

However i seem to be getting an error in my CIW when i do not select at least 2 nets:

*WARNING* Can not delete member GND from Shielding constraint Constr_0. Constraints of this type require at least 2 members.

 any suggestion/help is appreciated.

thanks

Stu

 

 

 

 

 

Parents

  •  Hi Fernando, thanks for your feedback.

    I am using: IC06.13.505, i'll check to see if there is a more up to date version. I have also now turned on constraint aware routing.

    So i can get  to the point where i have a shileding constraint listed in the constraint manager(with 2 members) BUT when i select my new shielding constraint the "shield net parameter"(step 4 in the document) is missing, so i'm not sure how to tell it which is the shielded net.

    I have tried going on regardless but when i use the wire editor to route the net shield is not generated, also have looked at the options while in route but cannot see any mention of shielding.

    Cadence are going to have a look at it today for me, i'm probably doing something silly, will let you know the outcome.

     Thanks

    Stu

     

     

     

Reply

  •  Hi Fernando, thanks for your feedback.

    I am using: IC06.13.505, i'll check to see if there is a more up to date version. I have also now turned on constraint aware routing.

    So i can get  to the point where i have a shileding constraint listed in the constraint manager(with 2 members) BUT when i select my new shielding constraint the "shield net parameter"(step 4 in the document) is missing, so i'm not sure how to tell it which is the shielded net.

    I have tried going on regardless but when i use the wire editor to route the net shield is not generated, also have looked at the options while in route but cannot see any mention of shielding.

    Cadence are going to have a look at it today for me, i'm probably doing something silly, will let you know the outcome.

     Thanks

    Stu

     

     

     

Children
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