Virtuoso Schematic Composer User Guide

Creating Schematics

3.Click OK.

To display the hierarchical path, choose Design – Hierarchy – Show Scope.

Deleting a Net Expression Label

To delete a net expression label from a wire or pin, do the following:

1.In the lower-level schematic, choose Edit – Delete.

2.Select the net expression label.

3.Press the Esc key to cancel the Delete command.

4.Choose Check – Current Cellview or Design – Check and Save to update the connectivity of the cellview.

Adding netSet Properties to Create an Inherited Connection

Adding a netSet property to an instance in a higher-level schematic lets you override the default signal name specified in a net expression of a lower-level schematic.

■Adding a netSet Property to an Instance on page 173

■Modifying a netSet Property on page 176

■Deleting a netSet Property on page 176

Refer to “Inherited Connections” on page 114 for a description of netSet properties used as inherited connections.

Virtuoso Schematic Composer User Guide

Creating Schematics

Adding a netSet Property to an Instance

To add a netSet property to an instance, do the following:

1.At the desired level of hierarchy, select an instance that represents the branch of the design hierarchy to be affected.

2.Choose Edit – Properties – Objects.

The Edit Object Properties form appears.

3. Click Add.

Virtuoso Schematic Composer User Guide

Creating Schematics

The Add Property form appears.

4.In the Name field, type the name of the property used in the net expression label.

5.Set the Type cyclic field tonetSet.

6.In the Value field, type the name of the signal that is to override the lower-level default signal name.

This will be the new net name. It may be a global or a local signal name, or it may be a net expression. The value must be one of the following:

A scalar (one-bit) name that is the name of a net in this schematic

Another net expression whose default name is a net in this schematic

7.Click OK.

The Edit Object Properties form shows the added netSet property.

Virtuoso Schematic Composer User Guide

Creating Schematics

8.(optional) For clarity, you should change the Display cyclic field from the defaultoff to both to display both the name and value of the netSet property on the instance. This more clearly shows that power = 3V! will be used in this branch of your design.

9.Click OK.

10.Choose Check – Current Cellview or Design – Check and Save.

If the current cellview does not have a signal with the signal name used within the netSet property value, the Check command automatically creates a small wire with this name.