IEEE DASC Standard Delay Format (SDF)
v
IEEE RevCom Approved as of 12/10/2001v
IEEE DASC Standard Delay Format (SDF) Study Group (PAR 1497)
History:
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The SDF specification was developed by Cadence in 1990-91, and proposed to OVI
as a standard in the same year. OVI SDF 2.0 was released in June '93, with
version 2.1 following in February '94 and version 3.0 in May '95.
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At the IVC/VIUF conferences in March '96, the DASC authorized a study group.
At that point the OVI LM-TSC group effectively doubled as two groups, the
IEEE-LM and IEEE-SDF.
IEEE standardization effort:
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SDF (Standard Delay Format) is an existing OVI standard for the
representation and interpretation of timing data for use at any stage of
the electronic design process. The ASCII data in the SDF file is represented
in a tool and language independent way and includes path delays, timing
constraint values, interconnect delays and high level technology parameters.
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The project would take OVI SDF Version 3.0 and with appropriate enhancements
turn it into an IEEE standard. Specific work would include [but not be limited
to] a detailed review of the SDF LRM, a transformation of the LRM toconfirm to
IEEE standards, introduction of the LABEL feature, and discussion and
possible action on new proposals.
Purpose:
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SDF has come to be accepted as a standard by many companies both in the EDA
industry and among their customers, but minor differences have gradually
arisen, primarily due to its rapid adoption and evolution. IEEE
standardization brings with it an opportunity to reduce and eventually
eliminate non-standard implementations and usages of SDF, to enhance and
improve it, and also to broaden its usage around the world.
Ballot Approval: IEEE P1497 SDF Standard
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Ballot Results
76% ballots returned (75% required)
94% approval (75% required)
Group Members:
Chair: Brien Anderson brien.anderson@eda.com
Ted Elkind elkind@cadence.com
John Amouroux johnny@ikos.com
Chris Browy c.browy@worldnet.att.net
Naveen Gupta naveen@lsil.com
Pierrick Pedron address unknown
Steve Wadsworth wadswort@poci.amis.com
Past OVI SDF standards:
Group Sysop:
Brien Anderson brien.anderson@eda.org
last modified December 17, 2001
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