NETEX-G Topics

Overview
• Introduction
• Applications
• User Interface
 
Inputs
• Gerber File Requirements
• Vias from Drill Data
• Layer Stackup
• Wire Bond Data
 
Assigning Nets and Nodes
• From ASCII Table
• From AIF
• From IPC356
• From GBRVU

Outputs
• ASCII Output
• Ansoft ANF
• Geometry Options
• GDSII
• DXF
 
Proximity Effect
• What is a Proximity Net?
• What is a Neighbor Net?
 
 
Extractions
• Extracting Nets
 
 
Netex Engine
• Program Flow
• Job File Syntax
• Command Line Syntax
• drl2gbr engine
• generating wire coords  

 

GDSII Stream Output

Below you see the GDSII output for a two layer PBGA. It has approximately 280 bond fingers.

gdsii of a PBGA


If you want to look at a particular net you can select it for viewing. Let's say that we want to view NET77. Open the structure dialog box and click on NET77.

selecting NET77 to view



For NET 77 there are three boundaries - one on the top metal level (red), one on the via layer (black) and one on the bottom metal layer (blue.) there is also a text label centered on the bond finger called BF1 and another text label centered on the ball pad called C3. These text labels are useful for both viewing and for LVS extraction.

You can also see that the plating trace is quite long and might act as an antenna or might couple to nearby nets.




view of NET77 only



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