Michael Mirmak Chair IBIS Open Forum IEEE DASC Meeting October 6 2011 IBIS Both Standard amp Organization IBIS I O B uffer I nformation S pecification Ver 50 ASCII data format for silicon IO signal integrity modeling ID: 544624
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Slide1
Introducing IBIS
Michael Mirmak
Chair, IBIS Open Forum
IEEE
DASC Meeting
October 6, 2011Slide2
IBIS: Both Standard & Organization
IBIS –
I
/O
Buffer Information Specification, Ver. 5.0ASCII data format for silicon I/O signal integrity modelingStandardized as ANSI/EIA* 656-B (4.2), IEC* 62014 (3.2)Managed by the IBIS Open Forum (IBIS Committee)Analog base: resistance, transition speed, capacitance Extended in recent yearsAMS: Verilog-A, Verilog-AMS, VHDL-AMS supportAMI: Algorithmic Modeling Interface for advanced SerDesSlide3
Specifications and Technologies
IBISCHK5: Free IBIS Syntax Checker and Parser
http://www.eda.org/ibis/ibischk5/
Source code available under license for a feeIBIS Quality SpecificationDefines a structured rating system for IBIS modelsTouchstone 2.0Network parameter descriptions (e.g., S-parameters)TSCHK2 parser also offeredOther specifications and documentsICM and IBIS-ISS (WIP) for interconnect descriptionsSlide4
IBIS Open Forum
Began in 1993, managing specifications & parsers
Now a committee under TechAmerica
ANSI standardization through TechAmerica accreditation
IBIS follows TechAmerica (ANSI) legal & operational rulesEntity-based, averaging 30 members annuallyMeets every three weeks via teleconferenceMembers vote on specifications & document changesHolds multiple free Summits annually worldwideDAC, DesignCon in the US plus European and Asian eventsStrong and continuing relationship with JEITA
IBIS seeks greater
interaction with DASC and
a streamlined path to IEC standardizationSlide5
Backup
Slide6
IBIS Board
Chair
Vice-Chair
Secretary
Model Librarian
Is final approver of specification ballots
Appoints Task
Groups and ad-hoc officials (e.g., treasurer)
Manages meetings
Manages meetings and summits in Chair’s absence
Usually acts as
summit
registration contact
Tracks balloting, membership and
standards
relations
Responsible for meeting and summit minutes
Maintains on-line model reference library
Webmaster
Postmaster
Responsible for all web content
Primary focus on events, specifications, roster and tools
Responsible for IBIS reflectors (IBIS, IBIS-Users)
Usually “first responder” to non-list participant questions
Non-
Charter
OfficersSlide7
IBIS Task Groups
Task Groups
IBIS Committee
(“IBIS Open Forum”)
Advanced Technology
Modeling Group
Arpad Muranyi,
Mentor Graphics
Quality
Mike LaBonte,
Indep
.
Model Review
Lynne Green,
Green Streak Programs
Notes
The Interconnect Task Group has been suspended pending
EDA vendors comprise Model Review, independently reviewing received models and providing feedback to model authors; no specification changes are recommended by this group and it does not hold meetings
Participation in the IBIS Task Groups is open to
the general public
Task Groups are created and Chairs appointed by the IBIS Chair
Some issues are handled by Ad Hoc teams for BIRD development
Editorial
Michael Mirmak, IntelSlide8
How Changes Are Made
BIRD
s
:
Buffer Issue Resolution DocumentsChange proposals for the IBIS specificationSubmitted by individuals or Task GroupsIf approved by IBIS Open Forum, included in future IBIS specification versionsBUGs: IBIS Parser issuesViolations of the specification, unexpected behaviors or requests for improvementUsually submitted by individualsTSIRDs
:
T
ouchstone
I
ssue
R
esolution
D
ocuments
Similar to BIRDs, but for Touchstone 2.0Slide9
References
IBIS Web site:
www.eda.org/ibis/
Links to Task Groups available there
SpecificationsIBIS 5.0: www.eda.org/ibis/ver5.0/ Touchstone: www.eda.org/ibis/touchstone_ver2.0/ICM: www.eda.org/ibis/icm_ver1.1/ BIRDswww.eda.org/ibis/birds/IBIS 4.0 Cookbookwww.eda.org/ibis/cookbook/ Training www.eda.org/ibis/training/