Virtuoso Schematic Composer User Guide

Editing Properties

3.In the Property Name field, type the property name that you want to add to the search list.

4.Click OK.

The new property name appears in the Find cyclic field on the Schematic or Symbol

Select By Property form.

Selecting Objects by Filtering

The Selection Filter form lets you specify which object types you can select manually for editing. This is especially useful when you have many object types, or overlapping object types, in a small area of your design.

For example, if you want to work exclusively with pins, you can turn on selection capabilities for pins only. As a result, if you click on another type of object that is near a pin, the other object is not selected.

To specify the objects you want to filter for selection, do the following:

1.Choose Options – Select Filter.

If you are in the symbol editor, the Symbol Selection Filter form appears.

Virtuoso Schematic Composer User Guide

Editing Properties

If you are in the schematic editor, the Schematic Selection Filter form appears.

2.In the Symbol (or Schematic) Objects section, specify the object types you want to select for editing.

The option none turns off all object types.

3.Click OK.

Object and Cellview Property Types and Values

The following table lists and describes each property type that appears in the Type cyclic field on the Add Property, Delete Property, or Modify Property subform.

Virtuoso Schematic Composer User Guide

Editing Properties

Object and cellview property values must correspond to the property type shown in the Type cyclic field; for example,

■If you use an integer type for a rise time property, you can type 10 for 10 nanoseconds.

■If you select int or float for the property type, you can type a minimum and maximum value to define a range.

■The minimum and maximum values must be valid for the int or float type. The value can be 0 or any positive or negative number. You can also specify infinity (no limit over 0), - infinity (no limit under 0), or leave the value blank to reflect no limit on the value.

■If you select string for the property type, you can specify a list of valid strings separated by spaces.

■The individual word specified represents the only possible values for this property. If the Choice field is left blank, any string is valid.

■If you select time for the property type, use the following format: mmm dd hh:mm:ss yyyy

where

mmm is the month, such as Jan

dd is the day of the month, from 01 to 31 hh is the hour from 00 to 23

mm is the number of minutes from 00 to 59 ss is the number of seconds from 00 to 59 yyyy is the year, such as 2000

For example, to set the valid time for July 26, 2000, 7:23 a.m., type

Jul 26 07:23:00 2000