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|  IBIS Accuracy Specification  README.TXT
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Hello.

The IBIS Accuracy Subcommittee thanks you for your interest in the IBIS
Accuracy Specification.  We hope that the material here will be useful for
engineers who are interested in producing and using IBIS datasheets whose
accuracy is appropriate for the design application at hand.  It is our
intention to create a spec that might be a suitable reference document for
component purchase orders.

What is accuracy?

As we define it, accuracy is close agreement between simulation results
and lab data.  As system designers and semiconductor vendors, we are
interested in modeling data that represents the real hardware.  In the IBIS
Accuracy Specification, we attempt to define metrics that allow an
engineer to quantify simulation vs. lab correlation.

This is what you will find in this directory:

accspec.pdf - The IBIS Accuracy Specification 1.1 in PDF format.

acctrail.pdf - An ASCII text file containing a template for the IBIS
Accuracy Trailer, an IBIS comment section that serves to document
simulation vs. lab correlation results for a given IBIS datasheet.

testbrd.tar.Z - A compressed unix tar file that contains the Cadence
design files and Gerbers for the IBIS Accuracy Test Board.  This board
demonstrates how to make the measurements outlined in the Accuracy Spec.
Make sure you read the errata file in the doc directory if you plan to
fab your own copy of this board.

We welcome your comments and insights about this material.


Sincerely,
The IBIS Accuracy Subcommittee
January 27, 1999

Fawn Engelmann, EMC  fawn@emc.com
Bob Haller, Compaq Computer  robert.haller@digital.com
Bruce Heilbrunn, Customtech  heilbrunn@110.net
Peter LaFlamme, Fairchild Semiconductor  peter.laflamme@fairchildsemi.com
Harvey Stiegler, Texas Instruments  hjs@ti.com
Greg Edlund, IBM (chairman)  gedlund@us.ibm.com

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Added February 10, 1999, Bob Ross:

desconibis.zip  -  "A Tour of the IBIS Accuracy Specification" (.ppt)
                   Robert Haller, Compaq
                   Peter LaFlamme, Fairchild Semiconductor
                   Presented at DesignCon99, February 2, 1999

Added May 5, 2000, Bob Ross

handbook.pdf - I/O Buffer Accuracy Handbook, Revision 2.0, April 20, 2000.
               This replaces the accspec.pdf document.

Added September 26, 2000, Bob Ross

report.pdf - I/O Buffer Accuracy Report
             Greg Edlund, IBM
             Presented at the September 14, 2000 IBIS Summit Meeting