User Guide

Glossary May 16, 2000
334
navigation
The process of moving between pages in a multi-sheet schematic, or
between levels in a hierarchical design.
net
A set of electrically connected part pins. A net may be anonymous or
named. An anonymous net might be the junction of two resistors. A
named net could be a wire labeled
CLOCK connecting two digital parts.
netlist
A list providing the circuit definition and connectivity information in
simulation netlist format.
nodeset
A symbol containing one or two pins, permitting you to initialize a
node voltage for simulation.
off-page port
A port connecting pages of a schematic. Off-page ports may or may not
contain a
LABEL attribute.
origin
The point on a symbol designated for placing a part. When a symbol is
rotated on the schematic, it is rotated about this point.
package
A physical device consisting of one or more gates.
package library
definition
The use of a mathematical model to represent the physical operation of
a circuit design.
package type
An attribute specifying the type of physical package that the actual
circuit board will use. For example, DIP14, chip carrier, surface mount.
package type class
An attribute specifying grouping of similar package types. For
example, DIP would be the class for all sizes of dip package types
(DIP14, for example).
page
One sheet of a multiple-sheet schematic. A page may contain both
parts (represented by symbols), port instances, connectors, and
annotation symbols. A page may or may not have a title. Each
schematic page represents a single page of a circuit design.
part
An electrical component that is represented by a schematic symbol. A
part refers to the logical rather than the physical component.
part description
Describes the symbol in terms of its symbol type, such as 2-input
NAND.
part instance
Refers to an occurrence of a symbol in a schematic.