Minutes, IBIS Quality Task Group

03 April 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:

- Lance Wang moved to approve the Mar 20 and 27 minutes. Bob Ross seconded.
  Without objection the minutes were approved.

ARs:

- Mike LaBonte to complete BIRD appendix for parser contract.
  - Mike updated sections for BIRDs 180 and 182.

New IBISCHK bugs:
- None

IBISCHK7 parser development:

- Mike showed draft 6 of the IBISCHK7 parser contract document.
- Mike: For BIRD 180 no change is needed.
  - The parser already flags duplicate pin names as an error.
- Bob: Arpad had proposed allowing duplicated pin names for some purpose.

- Mike: For BIRD 182 we not only do not require NC pins in [Pin Mapping],
  we warn if they are present.
- Bob: NC can have two meanings
  - Not connected, possibly in one version of a die.
  - It does not have a digital buffer behind it.
    - The 555 chip has a pin that is connected to a capacitor, for example.
- Mike: Only the first bullet requires a code change.
  - Warnings W0713 and W0714 seem to be the same warning.
- Bob: One is in the [Component] [Pin] section.
  - The second is not clear, it might be an undeclared pin.
- Mike: If it is NC it is declared as such in [Pin].
  - It may be that an NC pin in [Pin Mapping] would give both errors.
  - It is not clear that IBISCHK tests for any of this.
- Bob: We should try a test model.

AR: Bob Ross to test BIRD 182 status in IBISCHK6.

- Bob: I have started a guidance document for BIRD 189.
  - All that we could check for that BIRD becomes an exhaustive list.
  - The recommendation will be to not perform all possible checks.
- Mike: We should cover all errors, but maybe not all warnings.
- Bob: If two models conflict we can't say which is wrong.
- Bob described a number of possible guidance recommendations.

- Bob Ross moved to adjourn. Mike LaBonte seconded.
  - The meeting ended without objection.

Meeting ended: 11:41 ET

Next meeting April 10, 2018