Design Exchange Format
Encyclopedia
Design Exchange Format is an open specification for representing physical layout of an integrated circuit
in an ASCII
format. It represents the netlist and circuit layout. DEF is used in conjunction with Library Exchange Format
(LEF) to represent complete physical layout of an integrated circuit
while it is being designed.
DEF was developed by Cadence Design Systems
.
Integrated circuit
An integrated circuit or monolithic integrated circuit is an electronic circuit manufactured by the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material...
in an ASCII
ASCII
The American Standard Code for Information Interchange is a character-encoding scheme based on the ordering of the English alphabet. ASCII codes represent text in computers, communications equipment, and other devices that use text...
format. It represents the netlist and circuit layout. DEF is used in conjunction with Library Exchange Format
Library Exchange Format
Library Exchange Format is a specification for representing the physical layout of an integrated circuit in an ASCII format. It includes design rules and abstract information about the cells...
(LEF) to represent complete physical layout of an integrated circuit
Integrated circuit
An integrated circuit or monolithic integrated circuit is an electronic circuit manufactured by the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material...
while it is being designed.
DEF was developed by Cadence Design Systems
Cadence Design Systems
Cadence Design Systems, Inc is an electronic design automation software and engineering services company, founded in 1988 by the merger of SDA Systems and ECAD, Inc...
.