Tech Tip: Fanning Out BGA No Net Pins

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Introduction

If fanout of netless pins is required in a design, you first have to assign nets to those pins. CR-8000 Design Force Constraint Browser makes the process of adding nets for fanout quick, easy, and complete.

Challenge

When fanning out components in your design, typically you only want to fan out pins with connections. Sometimes customers wish to fan out every pin on a BGA, whether the pin has a net assigned or not. To do this we use the CR-8000 Constraint Browser to select pins without nets and assign a temporary net.

Solution

Using CR-8000 Design Force Constraint Browser, we select all of the No Net Pins in our BGA. Once the pins are selected we can easily assign temporary nets to them and use the Offset Via command to complete the fanout.

Today we will look at fanning out netless pins of a BGA in the following video.

Complete fanout of BGAs using Offset Via is easy when you use the right tools.

Brian Gilman
Brian Gilman
Applications Engineer
Brian Gilman is an applications engineer, supporting customers with CR-8000/CR-5000 training and consulting. He works directly with the customers on a daily basis helping them work through the technical challenges they face. He loves to ski and must be on the first chairlift in the morning to lay down the first tracks on fresh powder.