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IBIS INTERCONNECT TASK GROUP
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Attendees from January 27, 2021 Meeting (* means attended at least using audio)

ANSYS                                Curtis Clark
Intel Corp.                          Michael Mirmak*
Mentor, A Siemens Business           Arpad Muranyi*
Micron Technology                    Justin Butterfield*
                                     Randy Wolff*
SiSoft (MathWorks)                   Walter Katz*
Teraspeed Labs                       Bob Ross*
Zuken USA                            Lance Wang*


Michael Mirmak convened the meeting.  No patents were declared. 
Justin Butterfield took minutes.


Review of Minutes:
- Michael called for review of the minutes from the January 20, 2021 meeting.  
  Michael displayed the minutes.  Lance Wang moved to approve the minutes.  
  Randy Wolff seconded.  The minutes were approved without objection.


Review of ARs:   
- Randy to send out EMD BIRD202.2 draft7.
  - Done.


Opens:
- None.


BIRD202.2 draft7:
Michael asked if we need more discussion around the EMD Parts selector.  Bob 
Ross stated that it seems some expansion in this area would be a 
nice-to-have.  Michael asked if this is a nice-to-have feature or is necessary 
to add in this draft.  Arpad Muranyi replied we do not want to release this 
BIRD if it paints us into a corner for adding this feature later.  Randy 
commented there is an issue with this feature for nested EMDs, and this seems 
difficult to solve.  Bob stated our options are to include this now in a 
simple way or to not include it later.  He was concerned any change later 
would not be compatible.  Bob favored delaying the release to have a simple 
solution now, rather than try to add it later.

Michael asked if there is any feedback we would get from the IBIS Open Forum 
by submitting this now.  Bob replied it might be useful, as most people are 
not as deeply involved in this BIRD.  He suggested we should be prepared to 
release a BIRD202.3.  Michael asked how badly are we gated for IBIS 7.1.  
Randy replied this is the BIRD that is holding up the vote on IBIS 7.1 
content.  

Michael asked if we had enough consensus on the EMD Parts selector proposal 
that someone could write the update to the BIRD.  Arpad thought either he or 
Randy or could write it.  Arpad asked if we have come up with a simple 
solution.  He had suggested that we not include nested EMDs, but he was not 
sure we had come up with a solution.  Randy stated we had not come up with a 
solution on the nesting issue.  He asked if we could come up with a rule that 
we only support the selection at the top-level.  Arpad asked if the selection 
at only the top-level would be useful.  Bob asked why we need to limit 
ourselves.

Michael asked what needs to be changed in the current draft to submit this for 
Friday's Open Forum meeting.  Randy noted we need a statement about what has 
changed.  Bob noted we made some technical changes related to extended nets.  
Michael noted we do not have a history about what changed in BIRD202.1.  Arpad 
commented that we added two new keywords.  Randy stated we added EMD Parts 
and Voltage List.  Michael added a sentence for the updates to each version.  
Arpad stated we removed a keyword.  Randy noted we had EMD Designator Map 
which was removed.  It was replaced by EMD Designator List.  Bob stated we 
also added the shorted rail syntax with the asterisk.  Randy stated this was 
added in BIRD202.1.

Arpad asked what was the change from BIRD202.1 to BIRD202.2.  He was leaning 
toward releasing BIRD202.2 to the IBIS Open Forum.  Michael noted there is a 
not a statement in the BIRD on the difference between BIRD202.1 and 
BIRD202.2.  He suggested we should add this.

Arpad asked how useful it would be to release BIRD202.2 to the IBIS Open 
Forum.  Michael asked if we have received any feedback from the IBIS Open 
Forum on this BIRD.  Arpad stated he was not aware of any.  Bob commented the 
changes are self generated.  Randy commented the changes are mostly 
editorial.  Bob stated he did not have a problem to release BIRD202.2 with the 
understanding that we may want to release a BIRD202.3.  Arpad stated, if we 
don't release BIRD202.2, we are delaying the IBIS Open Forum review process.  
If we decide to not make any changes to this, then we are ahead.  Bob asked if 
it is worth it to submit this BIRD as is.  Arpad replied EMD works now, but 
the selector is a convenience feature.  Randy stated he can automate issuing 
multiple EMDs for variants.  Walter noted the majority of the file size is in 
the subcircuits, and the EMD file is just a wrapper.  Walter suggested we 
table EMD Parts selector discussion and move forward.  Randy agreed and 
suggested we submit BIRD202.2 to the IBIS Open Forum.

Michael asked what needs to changed in the current draft to submit this for 
Friday's Open Forum meeting.  Randy noted we need a statement about what has 
changed.  Bob noted we made some technical changes related to extended nets.  
Michael noted we do not have a history about what changed in BIRD202.1.  Arpad 
commented added two new keywords.  Randy stated we added EMD Parts and Voltage 
List.  Michael added a sentence for the updates to each version.  Arpad stated 
we removed a keyword.  Randy noted we had EMD Designator Map which was 
removed.  It was replaced by EMD Designator Map.  Bob stated we also added the 
shorted rail syntax with the asterisk.  Randy stated this was added in 
BIRD202.1.

Michael commented the terminology list item in the bin list should be 
something for the IBIS specification.  He would not hold up IBIS 7.1 for 
this.  Bob suggested this should be a separate BIRD.  We might also make 
changes to the terminology in the IBIS specification.

Michael noted there is highlighting of the section numbers and the table 
numbers in the BIRD.  He noted this will make our work for Editorial easier.  
Bob agreed to keep the highlights.

Randy asked about an open item in the bin list regarding pins.  Michael noted 
this is a final editorial check including the capitalization.  Randy thought 
this is in good shape with the editorial reviews we have done.

Arpad moved to submit the BIRD202.2 draft8 to the IBIS Open Forum.  Randy 
seconded.  There were no objections.

Michael will submit BIRD202.2 draft8 to the IBIS Open Forum with an email to 
the reflector [AR].

Randy and Arpad will create a proposal for adding a name to EMD Parts list 
[AR].  Bob stated he can help to update the examples.  Arpad suggested this 
can happen as a next step.


Michael asked if we will have a meeting next week.  Arpad asked how we will 
handle the workload for Editorial and updates to Touchstone.  Randy would like 
to start Editorial soon on the normal Friday time slot, and we could use this 
time slot if it works better.  Bob stated we need to have an organized process 
for the editorial work.  EMD is a large BIRD that needs to be carefully folded 
in.  Walter asked if it makes sense to make EMD a separate document.  Bob 
noted the EMD BIRD relies on other sections, such as Section 3.  He advised 
against this.


Next Meeting:
The next meeting will be TBD.


Randy moved to adjourn.  Walter seconded.  The meeting adjourned without 
objection.

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Bin List:

IBIS-ISS Parser:
- IBIS-ISS parser scope document