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

Getting Started

The Component Browser form expands to display the contents of another library.

2. From the Library cyclic fields, choose the libraries that you want to browse.

Changing the Component Browser Display

To display all components within categories of a library, do the following:

Choose the Flatten option.

By default, Flatten is deselected, so the Component Browser displays a hierarchical list of components grouped by categories.

To limit the display to specific components, do the following:

Type a selection pattern in the Filter field.

By default, the Filter field contains an asterisk, so the Component Browser displays all library components.

October 2002

82

Product Version 5.0

Virtuoso Schematic Composer User Guide

Getting Started

The following table describes filter patterns.

Key

Filter Pattern Description

 

 

c

Matches any ordinary character (not a special character listed here).

[c...]

Matches the string enclosed in the square brackets (called a set). If the first

 

character in the set is ^, it matches a character not in the set. Specify an

 

inclusive set of characters by separating the characters with a dash.

$

At the end of a filter string, matches the end of a pattern. Used elsewhere in

 

the pattern, is treated as an ordinary character.

*

When used alone, lists all components. When used as the last character in

 

a pattern, matches zero or more occurrences of a pattern. For example, to

 

list all components beginning with the letter c, use the filter c*.

+

When used as the last character in a pattern, matches one or more

 

occurrences of a pattern.

\(...\)

Saves the enclosed expression in a numbered register

 

(from 1 to 9).

.

Matches any character.

\

Preceding a special character, matches the character literally.

\n

Matches the contents of the nth register from the current regular

 

expression.

\<...\>

Restricts the pattern matching to the beginning and/or end of a word.

rs

A composite regular expression. Matches the longest match of r followed

 

by a match for s.

^

At the beginning of a filter string, matches the beginning of a pattern. Used

 

elsewhere in the pattern, is treated as an ordinary character.

October 2002

83

Product Version 5.0

Virtuoso Schematic Composer User Guide

Getting Started

October 2002

84

Product Version 5.0

Virtuoso Schematic Composer User Guide

2

Understanding Connectivity and Naming

Conventions

Connectivity is the way in which components and pins are linked together in a nonambiguous manner. The connectivity in a schematic is represented by wires linking the component pins to other component pins. Connectivity can also be represented by pins of the common name (connection by name). The connectivity of a cellview is created by either the Design – Check and Save command or the Check – Current Cellview command.

Connectivity with Objects on page 86

Instance Naming Conventions on page 87

Wire Connections and Wire Naming Conventions on page 91

Multiple-Bit Wire Connections on page 99

Multiple-Bit Wire Naming Conventions on page 105

Pin Connections and Pin Naming Conventions on page 107

Patchcord Connections and Patchcord Naming Conventions on page 111

Inherited Connections on page 114

Summary of Naming Conventions on page 122

October 2002

85

Product Version 5.0

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]