Minutes from the 26 May 2015 ibis-atm meeting are attached.
Mike
IBIS Macromodel Task Group
Meeting date: 26 May 2015
Members (asterisk for those attending):
ANSYS: * Dan Dvorscak
* Curtis Clark
Avago (LSI) Xingdong Dai
Bob Miller
Cadence Design Systems: * Ambrish Varma
Brad Brim
Kumar Keshavan
Ken Willis
eASIC * David Banas
Marc Kowalski
Ericsson: Anders Ekholm
IBM Steve Parker
Intel: Michael Mirmak
Keysight Technologies: Fangyi Rao
Radek Biernacki
Nicholas Tzou
Maxim Integrated Products: Hassan Rafat
Mentor Graphics: * John Angulo
* Arpad Muranyi
Micron Technology: * Randy Wolff
Justin Butterfield
QLogic Corp. James Zhou
Andy Joy
SiSoft: * Walter Katz
Todd Westerhoff
* Mike LaBonte
Synopsys Rita Horner
Teraspeed Consulting Group: Scott McMorrow
Teraspeed Labs: * Bob Ross
TI: Alfred Chong
(Note: Agilent has changed to Keysight)
The meeting was led by Arpad Muranyi.
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Opens:
- None.
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Call for patent disclosure:
- None
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Review of ARs:
- Michael M email list to start discussion of new Directionality issues.
- Done.
- Walter send "Terminal Names in IBIS" presentation to Mike L for posting.
- Done.
- Arpad to review IBIS specification for min max issues.
- In progress.
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New Discussion:
- Arpad reviewed the list of BIRDs that might be discussed.
Problems with Global Ground in IBIS:
- Arpad: Which group is discussing this?
- Walter: This group might be more involved than interconnect.
- It should be in the tabled BIRDs section.
- I have presented to both groups.
Directionality:
- Bob: There was a third solution that I, Walter and Radek favor.
- Arpad: We need to make a few decisions.
- Do we have enough information to discuss or should we wait for Michael
Mirmak?
- David motioned to discuss this.
- Bob seconded.
- No one objected.
- Walter showed emails discussing directionality options.
- Walter:
- There would be only one [Algorithmic Model] section.
- An I/O could only have Executable_TX and Executable_RX
- Others would use Executable.
- David: Agree.
- Arpad: Does anyone object to having a single [Algorithmic Model] block?
- No one objected.
- David: Does anyone object to Executable_TX and Executable_RX instead of a new
subparameter?
- Ambrish: What is the other option?
- Walter showed two examples.
- David: Direction is a subparameter with a different number of arguments from
Executable.
- Ambrish: Will we ever need multiple selectable [Algorithmic Model]s?
- The [Algorithmic Model] could have a name after it to make it selectable.
- Walter: That is unrelated.
- Arpad: We could have a TX/RX type field after the name of that.
- Ambrish: I'm suggesting the names would start with TX or RX.
- Walter: We just agreed to have only one [Algorithmic Model] section.
- Bob: We would need an [Algorithmic Model Selector].
- There already could be multiple Executable lines with different AMI files.
- Walter showed examples of all three proposals.
- Ambrish: Only my proposal would allow for an [Algorithmic Model Selector].
- Bob: I don't like changing the syntax of [Algorithmic Model].
- Walter: Can we eliminate method C (Direction subparameter)?
- No one objected.
- David: People who write the parsers should weigh in.
- Walter: I write parsers and I like method A.
- Bob: I work with IBISCHK development and I like method A also.
- Walter: It is the difference between 5 lines and hundreds of lines.
- Ambrish: That only has to be done once.
- John: [Model Selector] already does what method B wants to do.
- Arpad: A selector could be added later.
- David motioned to approve method A.
- Arpad seconded.
- No one objected.
- Arpad: We still have to decide which variant of A to use.
- The TX/RX could be appended to Executable or stand alone.
- David: Someone argued that it would behoove to not change the number of
arguments.
- Bob: I want to keep the number of arguments unchanged.
- David motioned to eliminate the separate TX/RX option.
- Walter seconded.
- No one objected.
- Walter motioned to eliminate the ExecutableTX and ExecutableRX without
underscore.
- Arpad seconded.
- No one objected.
BIRD176:
- Arpad motioned to untable BIRD176.
- Bob seconded.
- No none objected.
- Arpad: The BIRD is scheduled for a vote in the Open Forum.
- We should make a committee recommendation to get this off our agenda.
- Walter motioned to recommend passing BIRD176.
- Bob seconded.
- Walter: I will abstain if we have a roll call.
- I object to using [Pin Mapping].
- Roll call vote:
- ANSYS: Yes
- Cadence: Abstain
- Mentor: Abstain
- Micron: Yes
- SiSoft: Abstain
- Teraspeed: Yes
- The motion carried.
AR: Walter send notification of BIRD176 recommendation to list.
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Next meeting: 02 June 2015 12:00pm PT
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IBIS Interconnect SPICE Wish List:
1) Simulator directives
