Allegro Front-to-Back User Guide
Creating and Managing Libraries
October 2019 16 Product Version 17.4-2019
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For example, the files related to the symbol view sym_1 reside in directory
/share/library/standard/ioport/sym_1.
Library
A library is a set of cells that are related in any of these ways:
■ Components of a single design (a design library)
■ Components of same technology or family
■ Common components potentially used in many designs (a reference library)
Cell
A cell is the basic building block of a design. It is a collection of views that describe the
functionality and properties of an individual building block of a chip or system.
View
A view is a collection of related files that contain information about one type of representation,
such as symbolic, schematic, simulation or layout. A cell may not contain all possible types of
views.
Symbol Views
The symbol view is the drawing of the logical part. Each part can have one or more symbol
views that are in effect different versions of the logical representation.
Figure 1-1 Example of Symbol Views
lsttl
ls00
sym_1
master.tag
symbol.css
sym_2
master.tag
symbol.css
