Virtuoso Schematic Composer User Guide

Form Descriptions

Edit Cellview Properties Form

Show options specify which properties the system displays on the form. system displays the system-defined properties for a selected object. user (default) displays the user-defined properties for a selected object.

Property displays the property names for the selected object. This section of the form expands and contracts depending on which of the Show options you select and whether you select an object in the design.

The default display shows only the following system-defined properties:

Library specifies the library that contains the current design.

Cell specifies the cell name of the current design.

View specifies the view of the current design.

Note: You cannot add, delete, or modify grayed-out properties.

When you select system, the following system-generated properties appear on the form:

CellView Type specifies the cellview type of the current design.

Mode identifies which mode you are in: edit or read only.

Modified displays TRUE if the cellview has been modified during the current editing session.

schType identifies the type of schematic data.

instNamePrefix (appears only when the cellview is a symbol) defines a new prefix for instances of the symbol cellview. The prefix can be more than one character.

DBUPerUU displays the number of database units per user unit.

User Unit displays the current user unit.

Last Changed displays the date the cellview was last modified.

Last Checked displays the date the cellview was last checked.

Upper Right and Lower Left display the X and Y coordinates for the upper right corner and lower left corner of the cellview.

Note: Except for the instNamePrefix symbol property, you cannot add, delete, or modify system-generated properties.

Virtuoso Schematic Composer User Guide

Form Descriptions

Value displays the value for a property. Use Modify to edit values.

Display determines whether a property value is displayed in the design. When you enable one of the display options (value, name, or both), the information appears on the schematic near the selected object.

value displays only the value of the property.

name displays only the name of the property.

both displays both the name and the value of the property, separated by an equal sign.

off (default) displays neither the name nor the value of the property.

The Add, Delete, and Modify buttons appear on the form only when you enable the Show

– user option at the top of the form. Use these options to add, delete, and modify userdefined properties.

Add displays the Add Property form, which you use to add new user properties to the Edit Cellview Properties form. To add the new properties to your cellview, click on OK or Apply on the Edit Cellview Properties form.

Delete displays the Delete Property form, which lets you delete user properties. To delete properties from your cellview, click OK or Apply on the Edit Cellview Properties form.

The software deletes hierarchical properties from the database when you click OK or Apply on the Delete Property form.

Modify displays the Modify Property form, which lets you change the names and values for selected user properties. To apply the changes to your cellview, click on OK or Apply on the

Edit Cellview Properties form.

Virtuoso Schematic Composer User Guide

Form Descriptions

Edit Component Display Form

Select Label specifies the type of label you want to edit.

terminal expands the form to let you edit the display information for the selected terminals.

parameter expands the form to let you edit the display information for the selected parameters.

instance expands the form to let you edit the display information for the selected instances.

Auto Redraw specifies whether the editor redraws the schematic automatically when you click OK.

yes (default) redraws the schematic automatically. no does not redraw the schematic automatically.

Save opens the Save Label Display form, which lets you specify the file in which you want the system to save the current label display configuration.

Load opens the Load Label Display form, which lets you specify a previously saved label display configuration file that you want to use.

Attach saves the current label display configuration to a temporary file and attaches the file to the library so that it loads automatically when you open the library.

Detach removes an attached label display configuration from the library.

Set Simulation Data Directory opens the Set Label Display Simulation Data Directory form.

Apply To

library applies the label display configuration to the entire library. cell applies the label display configuration only to the cell. instance applies the label display configuration only to the instance. none applies the label display configuration to no objects.

You can apply parameter, model parameter, instance name, cell name, pin name, net name, voltage, current, and operating point options to the label display configuration.

Virtuoso Schematic Composer User Guide

Form Descriptions

You can apply literal, suffixes, globals, related, and full options to the label display configuration ofparameters.

You can apply schematic or simulation options to the label display configuration of a net name.

You can apply DC or transient voltage or current to the label display configuration. You must select results to annotate currents or voltages. You can designate a Time when to apply transient voltage or current.