What's Good About Allegro GRE Route Around Etch Shapes? See For Yourself in 16.5!

13 Jul 2011 • 1 minute read

This new 16.5 Global Route Environment (GRE) functionality was designed to allow the router to obey plane shapes that are found on signal layers. This is especially useful when a user is trying to work a breakout/route solution and maintain the power integrity of today's high power chips.

This functionality has some ramifications -
    1. It is global in nature. In other words, it cannot be controlled at the bundle level.
    2. Changing its state causes a reload of GRE so there is 'penalty' to using this.
    3. The Router will not push into Dynamic Plane Shapes. It treats them all as Static Shapes.

Process

Setup > Design Parameters > Flow Planning > Routing Controls
Under Routing Controls you can choose Etch Shapes as 'Route thru' or' Route around'
    Route thru : Router will route through the shapes
    Route around : Router will route around the shapes

Route thru shape

Route around shape

Check out this video !

Please share your experiences with this new 16.5 capability.

Jerry "GenPart" Grzenia