Dual Logo Procedures

Alex Zamfirescu IEC USNC TA TC93

Convener IEC TC93 WG2

November 2004

Facts

• Both VHDL and Verilog® are DL standards• Both standards are in maintenance • Dual Logo maintenance procedures were

approved by IEEE and IEC, but require pragmatic validation

• Some procedure details have to be filled in

Proposed Plan

• Walk through the information flow – identify and agree on areas for improvement/refinement

• Discuss the general major topics1. Actual flow requires that versions of the draft are produced and

reviewed - simpler for std in maintenance- editor on duty

2. Harder to understand IEC document circulation rules » DASC should be minimally affected

3. With extra rules IEEE groups might feel unreasonably constrained4. What are the first time process tune-up procedures

» Joint work to write procedure details, approval » Execute maintenance for VHDL and Verilog®» Review and Update DL procedures

Submitting Dual Logo Candidatesto the IEC

• Candidate is formally submitted to the IEC Central Office– IEC reviews candidate

• IEC Central Office sends a Question of Principle (QP) ballot to the SMB– Should this document move forward as an

IEC/IEEE dual logo document?• If the ballot passes, the document is sent to

the appropriate IEC TC for “fast-tracking”

Current IEEE DASC Dual Logo Submissions

• Computer Society/Design Automation Committee:– IEEE Std 1497-2001 – IEEE Standard for Standard Delay Format

(SDF) for the Electronic Design Process.. (IEC 61523-3) – IEEE Std 1076-2002 – IEEE Standard VHDL Language Reference

Manual ………………………………….. (IEC 61691-5) – IEEE Std 1364-2001 – IEEE Standard Verilog® Hardware

Description Language …………………… (IEC 61691-4) – IEEE Std 1076.4-2000 – IEEE Standard for VITAL ASIC Modeling

Specification……………………………….. (IEC 61691-6)– IEEE Std 1603-2003 – IEEE Standard for Advanced Library

Format (ALF) Describing Integrated Circuit (IC) Technology, Cells, and Blocks

– IEEE Std 1076.6-2004, Standard for VHDL Register Transfer Level (RTL) Synthesis

– IEEE Std 1364.1-2002, IEEE Standard for Verilog® Register Transfer Level Synthesis

Dual logo maintenance process see pages 2/3

An IEC-TC/SC needs to revise an IEC-IEEE standard

IEEE needs to revise an IEC-IEEE standard

MCR PAR

IEC and IEEE agree on a common need

YES

Dual logo maintenance team (DLMT) set up with members from IEC and

IEEE and a convenor jointly accepted ( see note 3 )

IEC disagreessee note 1

IEEE disagrees see note 2

INFO

Maintenance

Procedure

Maintenance

Procedure

The DLMT prepares a draft for comments (CD)

IEC National Comments( 3 months )

IEEE experts internal ballot( electronic )

The DLMT prepares a common compilation of comments with possible proposals for change

IEC-TC/SC takes decision by correspondance or at a TC/SC meeting

CDV OK? See note 4

IEEE takes decision for the next step ( possibly a second internal ballot )

INFO

Ballot OKSee note 4

The DLMT prepares a second draft based on commonly agreed changes

IEC votes on CDV(5 months)

IEEE sponsor ballot( 30-45 days )

INFO

NO NO

YES

See note 5

Maintenance

Procedure

Positive

results

Positive

resultsINFO

The DLMT prepares a common compilation of comments on the CDV together with proposals to solve them

YESSee note 6

NO

See note 6

NO

IEC-TC/SC takes final decisions on the comments

by email or at a meeting

IEEE takes final decisions on the comments receivedINFO

The DLMT prepares the FDIS based on commonly agreed modifications.

Revised IEC-IEEE standard

IEEE final ballot. Once approved IEC submits the FDIS for final vote (2 months)

See note 7

Maintenance Procedure Notes• Note 1 – IEC may decide to continue its own route. If any material is used from the

IEC/IEEE standard, a separate license agreement will be required. • Note 2 – IEEE may decide to continue its own route leading to publish a revised single

IEEE logo standard replacing the previous one. If so IEC will withdraw the existing IEC-IEEE standard. Then IEEE may submit to IEC this new standard as a candidate for a possible new IEC-IEEE standard according to the agreement.

• Note 3 – The organisation which initiates the process, proposes a convenor first. If the proposal is not accepted by the other organisation, another convenor has to be chosen amongst the members of the DLMT by mutual agreement.

• Note 4 – At this stage, IEC or IEEE are requested to task the DLMT to provide a new draft for comments

• Note 5 – The 2 ballot processes must be carried out in such a way that the deadlines are the same

• Note 6 – At this stage, IEC or IEEE may decide either to continue their respective route or to task the DLMT to provide a new draft for vote by both organizations. If IEC decides to continue its own route, then note 1 applies. If IEEE decides to continue its own route then note 2 applies.– Note 7 – The comments made at this stage must be limited to corrections of

misspelling or obvious errors which may have been generated during the preparation of the FDIS.

Notes