eldo_user

IBIS Models Support in Eldo
IBIS Resources on the Web
parameters to refer to a model for the buffer and the IBIS file where the model is located. In
Eldo you specify the name of the IBIS element with the prefix _IO_.
Eldo can simulate IBIS devices either individually or in the overall component. Eldo supports
external models/circuits written in SPICE or Verilog-A. External models/circuits written in
VHDL-AMS and Verilog-AMS can be simulated using Questa ADMS. Eldo is compatible with
HSPICE syntax, under option compat, except for multilingual model Support.
Related Topics
IBIS Device Standards
IBIS Support in Eldo
IBIS Examples
IBIS Resources on the Web
The best way to learn about IBIS is to review the IBIS specification, published papers and
sample models. Extensive IBIS information is available on the web as follows:
• Official IBIS Open Forum website:
http://www.eda.org/ibis/
• Mentor Graphics Visual IBIS Editor:
http://www.mentor.com/pcb/downloads/visual_ibis_editor/
Through these web sites you can: receive technical support; review articles, presentations and
FAQs; find links to most public IBIS models from semiconductor and connector supplier
sources; get free tools and documents that help create an IBIS model; and retrieve the IBIS
specifications.
Related Topics
Introduction to IBIS
IBIS File Types and Structures
There are three supported file types within the IBIS modeling framework:
• IBIS files, *.ibs
The IBIS file is the main file that contains the basic information about the component(s)
and their internal buffers. The .ibs file also contains information about the package
electrical characteristics (package model).
• Package files, *.pkg
Eldo® User's Manual, 15.3 729