EDIF - Electronic Design Interchange Format - is a vendor neutral format in which to store Electronic netlists and schematics. It was one of the first attempts to establish a neutral data exchange format for the electronic design automation (EDA) industry. An EDIF version 2 0 0 netlist file (with the extension (.edf), generated by any standard EDIF netlist writer. The Quartus II software also supports EDIF Input files with the extensions (.edif) or (.edn). When you compile an EDIF Input File, the Compiler uses one or more Library Mapping Files (.lmf) to map cells in an EDIF Input File to corresponding Quartus II logic functions, including Library. Electronic Data Interchange Format file. An industry standard file format for specifying a design netlist. WMDB – Windows Media Database file – The CurrentDatabase360.wmdb file can contain file name, file properties, music, video, photo and playlist information. Big Data (Distributed) edit Avro - Data format appropriate for ingestion of record based attributes.

Question: What is an EDN File?

Have you found, downloaded or received an EDN file, but don't know which software program is required to open it?

Before attempting to open an EDN file, you'll need to determine what kind of file you are dealing with and whether it is even possible to open or view the file format.

Answer: Files which are given the .EDN extension are known as EDIF Netlist files, however other file types may also use this extension. If you are aware of any additional file formats that use the EDN extension, please let us know.

How to open a EDN file:

The best way to open an EDN file is to simply double-click it and let the default assoisated application open the file. If you are unable to open the file this way, it may be because you do not have the correct application associated with the extension to view or edit the EDN file.

This file format was added to our database by a visitor to this site, but no additional information was provided. We have yet to investigate this file type further, or there was not enough information available at the time to report accurately on the format.

Please check back soon for more information as we are constantly updating our file descriptions based on search frequency.

Tip: Try to open the EDN file using a text-editor such as Notepad, as many file types contain simply contain unformatted plain-text and can viewed correctly using this method.

EDIF Input File (.edf)

An EDIF version 2 0 0 netlist file (with the extension (.edf), generated by any standard EDIF netlist writer. The Quartus^® II software also supports EDIF Input files with the extension (.edif)

When you compile an EDIF Input File, the Compiler uses one or more Library Mapping Files (.lmf) to map cells in an EDIF Input File to corresponding Quartus II logic functions, including Library of Parameterized Modules (LPM) functions, as well as to user-defined functions.

All logic functions in an EDIF Input File must be mapped to the Quartus II software logic functions in a Library Mapping File (.lmf). If you wish to use a function that is not mapped in a Altera-provided LMF, you must create a customized LMF. You can map EDIF cells to Altera-provided functions or to any design file created with the Quartus II software.

The Compiler processes EDIF Input Files automatically, generating a Compiler Netlist Extractor (.cnf) file for every cell in an EDIF Input File. You can also specify EDIF Input settings to help the Compiler interpret EDIF Input Files by specifying optional LMFs and non-default VCC and GND signal names.

A single EDIF Input File can be used to define all logic in a project, or can be incorporated at any hierarchy level in a hierarchical project.

The Quartus II software automatically creates a Block Symbol File (.bsf) that represents an EDIF Input File when you open the file in the Text Editor and create the default symbol for the current file. This symbol and the logic it represents can be incorporated into a Block Design File (.bdf).

You can also use EDIF Input File logic in an AHDL Text Design File (.tdf) by including a Function Prototype and inserting an instance of the function into the TDF.

You can import some resource assignments into the Quartus II software with the following EDIF property constructs:

Construct:	Type of Assignment:
chip_pin_lc	Chip, pin, logic cell
clique	clique
logic_option	Logic option

As an alternative, you can use the Assignment Organizer in the Quartus II software to make all types of assignments--including location and device assignments--for the logic in the EDIF Input File.

Edif Netlist File Format Template

To properly convert an EDIF Input File, EDIF constructs must have the following values:

Construct:	Value:
edifLevel	0
keywordLevel	0
viewType	NETLIST
cellType	GENERIC

The file name may be truncated to 8 characters. If you truncate the file name, you must then either rename the file with its previous longer file name from within the Quartus II software, or edit the file to change any instances of the file name to the new, truncated name. To rename the file from within the Quartus II software, open the file with the truncated name in the Text Editor and save it to its previous longer file name. However, if your file transfer software inserts characters into the truncated name that are not legal Quartus II software name characters, you may need to first rename the file from the DOS command line before you can open it in the Text Editor.

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Edif Netlist