Minutes from the 08 January ibis-atm meeting are attached
IBIS Macromodel Task Group
Meeting date: 08 January 2019
Members (asterisk for those attending):
ANSYS: Dan Dvorscak
* Curtis Clark
Cadence Design Systems: * Ambrish Varma
Brad Brim
Kumar Keshavan
Ken Willis
eASIC: David Banas
GlobalFoundries: Steve Parker
IBM Luis Armenta
Trevor Timpane
Intel: * Michael Mirmak
Keysight Technologies: * Fangyi Rao
* Radek Biernacki
Ming Yan
Stephen Slater
Maziar Farahmand
Mentor, A Siemens Business: John Angulo
* Arpad Muranyi
Micron Technology: Randy Wolff
* Justin Butterfield
SiSoft: * Walter Katz
Mike LaBonte
SPISim: * Wei-hsing Huang
Synopsys: Rita Horner
Kevin Li
Teraspeed Consulting Group: Scott McMorrow
Teraspeed Labs: * Bob Ross
The meeting was led by Arpad Muranyi. Curtis Clark took the minutes.
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Opens:
- Arpad noted that upcoming meetings on January 15th and 22nd will be held, but
we expect to cancel the meeting on the 29th because of DesignCon.
- Bob asked that anyone planning on presenting at the IBIS Summit at DesignCon
notify him and submit their presentation soon.
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Review of ARs:
- Randy to investigate if/why/how a clock waveform input might be used.
- In progress.
- Michael M. to investigate if/why/how a clock waveform input might be used.
- In progress.
- Michael M. to check with IP experts on whether DC_Offset is useful for Tx.
- In progress.
- Walter to send out BIRD197.1 draft 1.
- Done. This was originally intended for review by ATM, but Mike L. had
uploaded it to the Open Forum site as official BIRD197.1.
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Call for patent disclosure:
- None.
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Review of Meeting Minutes:
Arpad asked for any comments or corrections to the minutes of the December 04
meeting. Bob moved to approve the minutes. Ambrish seconded the motion.
There were no objections.
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New Discussion:
DC_Offset BIRD197:
Arpad noted that Bob had suggested changes to BIRD197.1. Bob said he had
created a new draft, and that it consisted largely of moving section headings.
He noted that most text ended up in Usage Rules. Arpad asked Bob and Walter to
take an AR to review Bob's changes and send a BIRD197.2 draft 1 to ATM for
review. They agreed.
DDR5 related topics:
Arpad ask if we had anything new to discuss with respect to rise/fall asymmetry
or clock forwarding. Walter noted that clock forwarding discussions were on
hold until Randy and Michael completed the ARs to report back on possible usage
scenarios. Walter noted that he would be presenting a paper on rise/fall
asymmetry at DesignCon. Bob asked him to submit the slides for the IBIS Summit
presentation by January 18th.
Redriver topics (tabled topics 11, 12, 13):
Michael M. asked if the three redriver topics were tabled pending some other
developments or feedback from the rest of the industry. Arpad noted that he had
posted to the ATM list and si-list asking for feedback on this topic from
redriver vendors, and we had gotten nothing in response. Arpad noted that,
shortly after his second post to the si-list, David Banas has posted about a job
opening for a company that wanted to make AMI redriver models for its photonics
products. Arpad said he had asked David to make sure that company was aware of
his posts seeking input on the AMI redriver flow.
Arpad summarized the state of the discussion and the three tabled topics as:
Fangyi had proposed a complex solution.
Walter had proposed a simpler but possibly incomplete solution.
Ambrish had suggested we shouldn't do anything until a concrete problem arose.
- Walter: Motion to adjourn.
- Ambrish: Second.
- Arpad: Thank you all for joining.
AR: Walter and Bob to send out BIRD197.2 draft 1 to the ATM list.
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Next meeting: 15 January 2019 12:00pm PT
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IBIS Interconnect SPICE Wish List:
1) Simulator directives
