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mulfycrowh , 01-12-2021, 08:33 AM

Hi everyone.

I have the following stackup.
I would like to swap L1 & L2 and swap L3 & L4.
What is the best way to proceed?
I am using AD19.
Thanks.

WhoKnewKnows , 01-12-2021, 06:12 PM

That depends on what you want to do. Do you have traces, polygons, etc. on one layer that you want to exchange for the traces, polygons, etc. on another? OR, do you want to swap around various layer features, copper thickness, dielectric features and thickness? For the latter, I can only recommend editing the layer stack table in the layer stack manager. Maybe there's a better way?

For the former, You could Add a pair of layers to the design. This would give you blank layers to copy all features of one layer to for staging. Then copy all copper features from a second layer to their destination layer. Then copy all features from the staging layer and past to their destination. Once all the swapping is done, eliminate the extra layers.

Just an idea. I've never tried it. Save/backup before attempting. Good luck.

mulfycrowh , 01-13-2021, 12:49 AM

Thanks.
I didn't start any routing. Layers are empty.
I just would like to have the following stackup:
​​​​​​GND plane
Layer 1
Layer 2
GND plane

mulfycrowh , 01-13-2021, 01:56 AM

It is not possible to move L1 down.
It is not possible to add any layer above L1.
So I don't the way how to proceed.

mulfycrowh , 01-13-2021, 02:21 AM

Is there a way to delete the stackup?

goncaloc , 01-13-2021, 03:38 AM

Hey

You can have whatever stackup you want, except Top and Bottom Layer cannot be plane layers.

You can just change L2 and L3 to signal, but you cannot change L1 and L4 to plane, so you will have to work with polygon planes on this ones.

mulfycrowh , 01-13-2021, 03:45 AM

OK. Thanks for the info.
It explains my trouble.