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Centering Clines Within BGA

Hello experts,

Is there a function that I can use to center only the clines inside the BGA area?

If so how do go I about it?

For instance, what skill code can I use to shove/move single clines or dual clines in between (or in the middle of) the BGA vias?

- where if there are two clines in between vias, the air gap is 1x or 2x of the trace width.

Below is a simple illustration:

Single cline centered in between BGA vias:

o I o I o I o

Dual CLine centered in between BGA vias::

o IxI o IxI o

Where:

o = via

I = Cline

x = air gap between two clines.

Note:

In some areas of the BGA, the vias are in-line while in some areas (at the periphery) the via pitch is mixed, that is a combination of 10mm and 8mm - stagered pitch.

Thanks,

Eddie

PRASH36 over 11 years ago

Hi
Route--->Custom smooth (Enable only Cline segs on find window) option may working for you,if u set the Spacing constraints values properly.

Regards
Prashanth
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eddieb1 over 11 years ago

Thanks Prashanth for the feedback.

Yes, I can use this option IF the BGA pitch is the same on all vias. However in my design I have different bga pitch so using different setting will be very difficult. I was looking for a code where the pitch (distance) between vias is used to place clines mid-center.

Eddie
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eddieb1 over 11 years ago

Experts, any idea?
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eDave over 11 years ago

Just thinking out loud... manipulating your grids and using axlShoveItems and could be a way to go.
i.e. Set your grid origin to the first via and the grid spacings to what you need between that and the next via. Then use axlShoveItems (gridded) to move the clines.
Might work but I'm sure that there are plenty of alternative methods.
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eddieb1 over 11 years ago

Thanks Dave for the repl.
Reading through the material, I thought of that too along wih axlPathOffset. But I wasn't sure it would work. In any case do you have a sample code that I play with?
I sure would like to see if I can move one cline in between two vias using the code you've suggested using.
Eddie
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