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Reduce layer count without effecting routing in other layers

Question asked by sdsdhiraj.de on Sep 18, 2013
Latest reply on Sep 20, 2013 by lalexman

Hello every one!

 

This is my first post at Mentor community!

 

I have been using PADS 9.2 since an year. I have an typical requirement for one of my projects. I have already done a layout design in 8 layers for one of the project. Now the same design is to be done in a six layer stack up by reducing/deleting internal power planes - layer 4 and layer 5.

 

I have deleted the existing planes across layer 4 and laer 5 in the design and there are no other components except the vias for signals that are routed in the other routing layers. Now, when i try to modify the layer count i.e., reduce it from 8 to 6, there's a prompt which says 'Delete all the objects in the layer before deleting layer itself". I can't delete the vias as they would disturb my routing across routing layers.

 

Request for suggestion whether there Is better a way by which layer count can be reduced from 8 to 6 without deleting the existing routing!

 

Thank you,

Dhirendra Singh S

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