====================================================================== IBIS INTERCONNECT TASK GROUP http://www.ibis.org/interconnect_wip/ Mailing list: ibis-interconnect@freelists.org Archives at http://www.freelists.org/archive/ibis-interconn/ ====================================================================== Attendees from September 21 Meeting (* means attended at least using audio) ANSYS Curtis Clark Cadence Design Systems Bradley Brim Cisco David Siadat Intel Corp. Michael Mirmak* Keysight Technologies Radek Biernacki*, Ming Yan Mentor Graphics Arpad Muranyi* Micron Technology Justin Butterfield*, Randy Wolff SAE ITC Maureen Lemankiewicz, Logen Johnson Signal Integrity Software Walter Katz*, Mike LaBonte Teraspeed Labs Bob Ross* University of Aveiro in Portugal Wael Dghais Michael Mirmak convened the meeting. No patents were declared. Review of Minutes: Michael called for review of the minutes from the September 14 meeting. Walter moved to approve the minutes. Bob seconded. The minutes were approved without objection. Review of ARs: Michael said the only AR was for Mike to post draft 40, which was done. Opens: Walter stated he had a few comments about referencing. He mentioned that Radek and Bob are looking into it, and that he has given them some feedback. There still may be some recommendation on using ideal ground, but he wanted to make sure everyone is aware of the issue. Michael asked if we need to discuss it here or in another group. Walter thought that we didn't needed to discuss it at length here, and we should let Bob and Radek work on it off-line first. Interconnect BIRD draft 40 Review: Michael stated that last time we had gotten through the [Interconnect Model Selector] section to the bottom of page 4. Walter commented he had sent out some recommendations on which comments to delete and which to discuss. Michael asked Walter to give his recommendations on the comments as we go through them. Comment #1: Michael said that this comment is in regards to the word "model" being overused. Although, it is pointing it out in reference to [Define Package Model]. Bob commented that this is still true and has not been resolved. Walter recommended to remove the comment. There were no objections. Comment #2: Michael took an AR to create a tree diagram for the introduction of Chapter 12. He will also look into adding other tree diagrams as needed, as suggested by Bob. Comments #3 and #4: Bob asked what standardized verbiage should be used for the introduction to Chapter 12 in regards to the terminals. Michael suggested that we can remove the text "(Supply and I/O)" to simplify the statements. Bob commented that later in the document we need to distinguish between supply and I/O terminals. The problem is that when we use the term "signal_name", we really mean supply terminal signal_name. But, some of the pins will be I/O and some will be supply. In the introduction, we are referring to both types and later we make the distinction. Michael took an AR to check the supply terminal signal_name later in the document and make sure the introduction to Chapter 12 is consistent with this naming. Bob suggested that we need to check the verbiage of the Interconnect Model Set as the top level rather than the Interconnect Model. Michael changed the introductory text to refer to Interconnect Model Set. He also did a search and replace to change ".ict" to ".ims". Radek suggested to change "an Interconnect Model Set" to "One or more Interconnect Model Set". He also to suggest to delete the repetitive sentence stating "One or multiple Interconnect Models may be included in a .ims file." Bob suggested to add a sentence stating you can have more than one Interconnect files. Bob commented that he has some concern about the Manufacturer and Description, and asked if these should be restricted to the [Interconnect Model Set]. While, the other keywords apply to the [Interconnect Model]. Walter agreed. And, he suggested, to be consistent, the [Manufacturer] and [Description] should be keywords with brackets. Bob agreed, noting that [Define Package Model] already has these keywords. Michael changed the table on page 10 accordingly. He also moved [Manufacturer] and [Description] under [Interconnect Model Set] to imply hierarchy. Michael added a note to the page 10 table that at least one [Interconnect Model] is required for each [Interconnect Model Set]. He also added that [Manufacturer] and [Description] are optional. Radek suggested to use the phrase "Interconnect Modeling keywords" to match the title of the table. Michael agreed and thought we could use that phrase globally in the document. Michael took an AR to look into changing to the phrase, "Interconnect Modeling keywords", throughout the document. Walter asked if we are going to forbid the .ibs file form calling Interconnect Model Sets in another .ibs file. And, if so, we should add a rule to prevent this. Arpad and Bob agreed that this should be prevented. Michael added a rule preventing this case. Bob asked about the use of the word token in the table notes. Michael commented that these have to have the '=' sign then the string. Radek suggested to remove the word "token". Michael asked about the Note for where it states "No token or other reserved word is defined to identify terminal lines." Bob commented that is more complicated than a simple note. He suggested to add a forward reference for to where it is discussed in detail. Bob moved to adjourn. Walter seconded. The meeting adjourned without objection.