Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
virtuoso schematic composer_5.0.pdf
Скачиваний:
97
Добавлен:
05.06.2015
Размер:
3.8 Mб
Скачать

Virtuoso Schematic Composer User Guide

Form Descriptions

Edit Object Properties Form – Basic

You use the Previous and Next buttons along with the Apply To options below to locate objects in your design window. When there are multiple objects in the selected set, you use the Next and Previous buttons to locate objects in the set. You use the Apply To options to specify the objects the software changes.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Apply To consists of up to three cyclic fields that you use to specify the object, or group of objects in a selected set, whose properties you want to change. The software uses one color to highlight selected objects. But when there are multiple objects in the selected set, the software uses a second color to highlight the current object. And when you configure the cyclic fields to apply changes to multiple objects, the software uses a third color to highlight all the affected objects.

Selection scope specifies whether you want to edit only the current object, only the selected objects in the specified object type group, or all the objects in the specified object type group (which includes both selected and unselected objects of the specified object type).

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Object filter appears only when the selection scope is set to all selected or all. This option acts as a secondary filter for further limiting the selection scope. The options vary depending on the selected object type.

Show specifies 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.

CDF (default) displays predefined properties defined by the Component Description Format (CDF).

October 2002

745

Product Version 5.0

Virtuoso Schematic Composer User Guide

Form Descriptions

Edit Object Properties Form – Instance and Block

You use the Previous and Next buttons along with the Apply To options below to locate objects in your design window. When there are multiple objects in the selected set, you use the Next and Previous buttons to locate objects in the set. You use the Apply To options to specify the objects the software changes.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Apply To consists of up to three cyclic fields that you use to specify the object, or group of objects in a selected set, whose properties you want to change. The software uses one color to highlight selected objects. But when there are multiple objects in the selected set, the software uses a second color to highlight the current object. And when you configure the cyclic fields to apply changes to multiple objects, the software uses a third color to highlight all the affected objects.

Selection scope specifies whether you want to edit only the current object, only the selected objects in the specified object type group, or all the objects in the specified object type group (which includes both selected and unselected objects of the specified object type).

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Object filter appears only when the selection scope is set to all selected or all. This option acts as a secondary filter for further limiting the selection scope. The options vary depending on the selected object type. The possible choices for the instance object type are same master and any master.

Show specifies 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.

CDF (default) displays predefined properties defined by the Component Description Format (CDF).

Browse opens the Library Browser, which you can use to fill in the form automatically.

Reset Instance Labels Display resets the display and placement of all instance labels to their default specifications as defined in the symbol view.

October 2002

746

Product Version 5.0

Virtuoso Schematic Composer User Guide

Form Descriptions

Property lists the properties that the system automatically extracts from the design database.

Value displays the values for the corresponding properties.

Display determines whether the system displays the property name and property value in the schematic.

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

value displays only the value.

name displays only the name.

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

The two options described below appear when you enable the Show – system option.

Magnification controls the scaling factor applied to the selected instance. A value of 1 (one) specifies the true size.

Origin displays the location of the instance in the cellview.

The Add, Delete, and Modify buttons affect only the display of properties on the Edit Objects

Properties form. You must click OK or Apply to apply the changes to objects in your design.

Add displays the Add Property form, which lets you add a new property to the Edit Object Properties form.

Delete displays the Delete Property form, which lets you delete selected properties from the

Edit Object Properties form.

Modify displays the Modify Property form, which lets you redefine properties currently displayed on the Edit Object Properties form.

The following fields appear for block editing in addition to the ones described for editing an instance on the previous pages.

FreezePinCreate appears only if you have selected a block. It controls whether the system adds a pin to a block when you connect a new wire to the edge of a block. When this option is disabled (default), the system automatically creates a pin when you click on the edge of a block to terminate the wire. When this option is enabled, the system does not create a pin.

Instead, the system automatically draws the wire to the nearest existing pin, when one exists. When no pin exists, the system does not let you connect a wire to the block. Use the Editor

Options form (Options – Editor command) to specify the pin directions.

The following options appear on the form only when you enable the Show – system option.

October 2002

747

Product Version 5.0

Virtuoso Schematic Composer User Guide

Form Descriptions

Pin Direction specifies a direction for the pin.

Pin Name specifies the pin name.

Net Name displays the net name.

Inherit, in general when this option is enabled, derives the pin name from the net name.

However, if you delete the wire segment for a pin, the system automatically enables this option and derives the net name from the pin name.

October 2002

748

Product Version 5.0

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]