Hello colleagues:
PDA is kind of old method, link analysis is better method for the analysis of
jitter and other effects. It was proposed by Intel engineers and used on these
papers
Balamurugan, G., B. Casper, J. E. Jaussi, M. Mansuri, F. OMahony, and J.
Kennedy (2009) Modeling and analysis of highspeed I/O links, IEEE
transactions on advanced packaging, 32(2), pp. 237247.
Casper, B., G. Balamurugan, J. E. Jaussi, J. Kennedy, and M. Mansuri (2007)
Future microprocessor interfaces: analysis, design and optimization, in
Custom Integrated Circuits Conference, 2007. CICC07. IEEE, IEEE, pp. 479486.
Ayub, A., A. Morales, and S. Agili (2017) PAM 4 correlated random Jitter
modelling for high speed links, in Consumer Electronics (ICCE), 2017 IEEE
International Conference on, IEEE, pp. 342343.
Andrea Cristofoli Pierpaolo Palestri, Nicola Da Dalt, and Luca Selmi,
Efficient Statistical Simulation of Intersymbol Interference and Jitter in
High-Speed Serial Interfaces, IEEE Transactions on Components, Packaging and
Manufacturing Technology, Vol. 4, No. 3, March 2014 .
I hope it helps
Stay safe and healthy,
Aldo
_____________________________________________________________________________________________
Aldo W. Morales, Ph.D. IEEE Senior Member
https://psu.zoom.us/my/aldo.morales
IEEE Consumer Electronics Society 15-16 Distinguished Lecturer
Co-Director, Center of Excellence in Signal Integrity
<http://www.hbg.psu.edu/csi>https://harrisburg.psu.edu/center-for-signal-integrity
Professor of Electrical Engineering
Penn State Harrisburg
777 West Harrisburg Pike
Middletown, PA 17057
U.S.A.
Phone: (717)-948-6379
Fax: (717)-948-6352
________________________________
From: si-list-bounce@xxxxxxxxxxxxx <si-list-bounce@xxxxxxxxxxxxx> on behalf of
Dmitriev-Zdorov, Vladimir <vladimir_dmitriev-zdorov@xxxxxxxxxx>
Sent: Saturday, August 28, 2021 2:27 PM
To: si-list@xxxxxxxxxxxxx <si-list@xxxxxxxxxxxxx>
Subject: [SI-LIST] Re: Peak Distortion Analysis with and without Maximum
Transition
Jason,
I don't know the exact method they used but most likely this is done by
non-linear programming. The major part of PDA is finding the pattern that
maximizes distortion. For an unconstrained patterns, like NRZ, PAM-4 or others,
the solution is trivial: we need to select the symbols (+/-1, +/-3) in the
pattern so that if convolved with the SBR, they give maximal ISI error. For the
constrained patterns, one have to define all possible symbol groups (of
possibly minimal length), not separate symbols, and available transitions
between the groups. Instead of linear chain of elements with unknown symbol
values, the structure becomes a linear chain of blocks (along the dimension
that defines the length of the SBR) where each block is a column of all
available symbol groups. You will need to define allowed transitions between
the elements of adjacent columns, since some transitions (like -3 to 3 or
inverse) should not happen. The rest is to find the path that goes through the
chain "from left
to right", following the allowed transitions between the groups, so that the
sum ISI is maximized.
Vladimir
Msg: #1 in digest
From: "Jason Ellison" <dmarc-noreply@xxxxxxxxxxxxx> ("jason.j.ellison")
Date: Fri, 27 Aug 2021 09:53:02 -0400
Subject: [SI-LIST] Peak Distortion Analysis with and without Maximum Transition
Hello SI Listeners!
NVIDIA presented a paper using peak distortion analysis (PDA) with and without
maximum transition avoidance (MTA). Howard and Heck's High Speed Digital Design
explains how to calculate PDA, but it does not say how to do it with MTA. The
DesignCON paper does not have a reference on how to do it.
Does anyone have a reference (journal or conference paper) on how to calculate
PDA with MTA?
I put the name of the paper below for anyone interested in checking it out.
From Simulation to Production: An In-Depth Look at Designing and Productizing
GDDR6X, the Worldâs First PAM4 Memory
Thanks!
Jason
Employed by and affiliated with Amphenol AICC
(https://nam10.safelinks.protection.outlook.com/?urlÿtps%3A%2F%2Fwww.amphenol-icc.com%2F&data%7C01%7Cawm2%40psu.edu%7C438325d158114245ac7e08d96a51805e%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C637657720549074089%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdataÿ6KWwp%2B9fUQ7nRgTJjUQ2FTy6R2VLPw8b4UFdA1ZPQ%3D&reservedÿ)
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