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Constraints for fanout

Hossein1357

Hi, 

I want to create some rules for Allegro PCB when it creates fanout for my BGA. I have defined two types of VIAs and I want to force Allegro to use one VIA - and thick track width -  for Power& GND pads and other VIA - with thinner track width - for signals. Where can I define such rules?

Any suggestions are welcome.

Hossein 

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  • steve

     Probably the best doucment is the Constraint Manager User Guide. Look at <your_install_dir>\doc\cmug\cmug.pdf where <your_install_dir> is normally C:\Cadence\SPB_16.6 if you're using the latest release.

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  • steve

     Probably the best doucment is the Constraint Manager User Guide. Look at <your_install_dir>\doc\cmug\cmug.pdf where <your_install_dir> is normally C:\Cadence\SPB_16.6 if you're using the latest release.

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