Virtuoso Schematic Composer User Guide

Creating Schematics

The Net Expression Available Property Names form appears.

All net expression properties available to

instance: I1

in the top level cellview: inhConnFlow top_easy schematic

2.Choose an instance in the schematic.

For the form shown above, the I1 instance was selected. The form displays all the active net expression property names available to the I1 instance in the hierarchy. The active property name is the name of the lookup property in a net expression (associated with an inherited signal or an inherited terminal) or in a redirecting net expression (the value of a netSet property) for which no override is found in the hierarchy below the selected instance.

3.Click OK.

Viewing the Evaluated Net Names

To view the net names that result from the evaluation of all net expressions that are found in the hierarchy below the selected instances, do the following:

1. Choose Edit – Net Expression – Evaluated Names.

Virtuoso Schematic Composer User Guide

Creating Schematics

The Net Expression Evaluated Names form appears.

The form displays all the different evaluated names that result from evaluations of all net expressions in the hierarchy below the selected instance; in this case, the I1 instance.

All evaluated names from net expressions

below instance I1

in the top level cellview: inhConnFlow top_easy schematic

2.Choose one of the evaluated names.

3.Click List Cellviews with Selected Evaluated Name to obtain a comprehensive picture of the inherited connection usage in the design.

The Cellviews with Evaluated Net Expression Name form appears.

Virtuoso Schematic Composer User Guide

Creating Schematics

This secondary form contains the full list of cellviews that contain net expressions that evaluate to the selected evaluated name. It shows the lookup property name and the default signal for each of these net expressions.

Cellviews with net expressions that evaluate to: vdd!

below instance I1

in the top level cellview: inhConnFlow top_easy schematic

Viewing the Full List of all Hierarchical Paths

To view the full list of all hierarchical paths, do the following:

1.Choose Edit – Net Expression – Evaluated Names.

2.Choose an evaluated name.

3.Click List Occurrences for Selected Evaluated Name. The Occurrence Paths to Evaluated Name form appears.

Virtuoso Schematic Composer User Guide

Creating Schematics

This form contains the full list of all hierarchical paths (for example, all lineages) that can be followed down to all net expressions that evaluate to the selected evaluated name.

All occurrence paths to net expressions that evaluate to: vdd!

below instance I1

in the top level cellview: inhConnFlow top_easy schematic

4.Set the Display occurrence paths with cyclic field toinstance names, cell names, or instance and cell names, depending on the occurrence path display you want.

5.Review the results for gathering information to debug your design, then click OK to close the form.

Checking the Net Expression

To check the net expression for accuracy, do the following:

1.Choose Check – Current Cellview or Design – Check and Save after adding or changing a net expression label or netSet property.

After the check is completed, the Command Interpreter Window (CIW) shows the results of the check, and a dialog box appears.

Flashing highlighted markers in your schematic indicate the objects that have errors or warnings.

2.On the dialog box, click Close.

For more information, see “Checking a Design” on page 425.