Minutes, IBIS Quality Task Group

27 March 2018

11:00-12:00 EST (08:00-09:00 PST)

ROLL CALL

eASIC:                              David Banas
Ericsson:                           Anders Ekholm
Intel:                              Michael Mirmak
                                    Eugene Lim
IO Methodology:                   * Lance Wang
Mentor, a Siemens Business          Arpad Muranyi
Signal Integrity Software:        * Mike LaBonte
Teraspeed Labs:                   * Bob Ross
Visteon:                            Preetesh Rathod

Everyone in attendance marked by *

NOTE: "AR" = Action Required.

-----------------------MINUTES ---------------------------
Mike LaBonte conducted the meeting.

Call for IBIS related patent disclosures:

- None

Call for opens:

- None

Review of previous meeting minutes:

- No March 20 minutes were available for review.

ARs:

- Mike LaBonte to complete BIRD appendix for parser contract.
  - Mike updated sections for BIRDs 158.7 and 179

New IBISCHK bugs:
- None

IBISCHK7 parser development:
- Mike showed IBISCHK700_PARSER_CONTRACT_draft5.docx
- Mike: BIRD158.7 was changed after the Friday IBIS Open Forum meeting.
- Bob: We also discussed a BIRD change to allow us to enforce requirements
  with ERROR, not WARNING.
- Mike: IBIS provides little description of numeric requirements
  in a number of places.
  - For example only an example comment says whether Vinl/Vinh are AC or DC.
- Bob: We could add detail in a number of places, such as Polarity in [Model].

- Mike: The section for BIRD179 has been updated, but there are questions..
- Mike showed BIRD179.
- Mike: The BIRD does not state that the named parameter must exist.
  - It does not seem useful to have "placeholder" parameter names.
- Bob: This was about models implementing features like non-standard
  back-channel, that only one tool might understand.

- Mike: Could the note about "Label is not required" be dropped?
- Bob: Maybe. They are never required, that is a given.
  - The Table values could be given in columns, not just rows.
- Mike: That is another case of not specifying details.
  - As written, any row/column arrangement could be accepted.
- Bob: We should raise this at ATM.
- Mike: We should be conservative right now, require a single column.
  - That can be relaxed later.
  - Also BIRD179 does not specify how to treat hierarchical parameters.
  - We might interpret the parameter name to support only top level parameters.
- Bob: IBISCHK could check for the first occurrence of a name at any level.
- Mike added requirements for number of columns and name hierarchy to
  the parser contract.

- Mike showed Supporting_Files in IBIS 6.1.
- Mike: This is similar to Special_Param_Names, and it does specify one column.

- Bob Ross moved to adjourn. Lance Wang seconded.
  - The meeting ended without objection.

Meeting ended: 11:48 ET

Next meeting April 3, 2018