From: Kevin Cameron (Kevin.Cameron@nsc.com)
Date: Fri Jul 16 1999 - 02:14:03 PDT
I don't know if anyone else tracks the Verilog-AMS stuff, but
it struck me that some useful extensions could do with better
exposure.
The mixed-signal boundary A/D & D/A structures are just auto-inserted
modules, and their supporting functions are either 'digital' or
'analog'. A required extension on the digital side for handling X/Z
and accurate D->A conversions is 'driver access' (section 7.7 in
the LRM - ftp://ftp.cadence.com/public/vams_lrm_1_4.pdf).
I thought the BTF might want to take over this part of the AMS language
as it allows accurate modelling of things like capacitor leakage (hold-up
times) etc. in purely digital simulation.
Regards,
Kev.
-- http://alab/~dkc mailto:dkc@alab.nsc.com tel:+44 131 667 3325Return-Path: <jons@cadence.com> Received: from natsemi-bh.nsc.com by alab.nsc.com (SMI-8.6/SMI-SVR4) id MAA05825; Tue, 13 Jul 1999 12:17:06 -0700 Received: (from uucp@localhost) by natsemi-bh.nsc.com (8.8.8/8.6.11) id MAA23269 for <dkc@alab.nsc.com>; Tue, 13 Jul 1999 12:33:04 -0700 (PDT) Received: from mailgate.cadence.com(158.140.2.1) by natsemi-bh.nsc.com via smap (4.1) id xma022229; Tue, 13 Jul 99 12:32:05 -0700 Received: (from smap@localhost) by mailgate.cadence.com (8.8.5/8.6.8) id MAA06428; Tue, 13 Jul 1999 12:30:54 -0700 (PDT) Received: from cds3075.Cadence.COM(158.140.24.1) by mailgate.cadence.com via smap (mjr-v1.2) id xma931894247.006392; Tue, 13 Jul 99 12:30:47 -0700 Received: from cds9143.Cadence.COM (cds9143.Cadence.COM [158.140.20.69]) by cds3075.Cadence.COM (8.8.6/8.8.5) with ESMTP id MAA20849 for <verilog-a@cds3075.cadence.com>; Tue, 13 Jul 1999 12:30:37 -0700 (PDT) Received: from pc-jons.cadence.com (d1581402185.Cadence.COM [158.140.21.85]) by cds9143.Cadence.COM (8.8.8/8.8.5) with SMTP id MAA05997 for <verilog-a@cds3075.cadence.com>; Tue, 13 Jul 1999 12:30:35 -0700 (PDT) Message-Id: <3.0.32.19990713122752.00c1fae8@cds9143.cadence.com> X-Sender: jons@cds9143.cadence.com X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Tue, 13 Jul 1999 12:27:55 -0700 To: Verilog-AMS Committee <verilog-a@cds3075.Cadence.COM> From: "Jonathan L. Sanders" <jons@cadence.com> Subject: Working Group LRM update Version 1.4 Mime-Version: 1.0 X-Lines: 89 Content-Type: text/plain; charset="us-ascii"Greetings,
The LRM cleanup committee and PLI committees have been hard at work addressing the issues assigned to them. In the past 6 months much has been accomplished and we now have a new revision of the LRM to show for it. The work is by no means done but we felt that a new clean version of most of the items presented to the committees would be of value.
The new version of the LRM is version 1.4 and it contains:
- Responses to most of the 300 items provided to the committee, most of which have already been approved by the full committee. - A new chapter (placeholder) for mixed signal. - Two new chapters (placeholders) for PLI.
So your question might be what is left to work on. The PLI sections are the early versions of the committee's work. They have a number of changes and proposals that they have agreed to but are short on helpers to put this into the LRM text. If support is found this should be at least 90% done by our next revision.
Also, the Mixed Signal chapter is in its early stages as we agreed to separate it out from the other chapters. An outline which includes some bullets from presentations over the last few years as well as the sections from other chapters is provided. The cleanup committee is now working on focusing a major percentage of its time to finishing up this chapter.
The other major area is the area of the BNF. We have made some significant improvements here but we certainly will need at least one more pass. This is especially tricky as we try not to re document 1364 verbatim but provide a clear and concise BNF. These issues should mostly be resolved by the next version of the LRM.
And finally the remaining open issues and additional feedback from you the reviewers. We have completed most of the open issues with the exception of the BNF and Mixed Signal sections in which there are a number of issues we are still addressing. In addition, we expect from this version of the LRM that some additional issues will come as a result of the clarifications allowing you to have new questions.
This version is for content review and while significantly better than version 1.3 should be used only as part of the cleanup process. We need each of you to review this version, especially to verify that your issues were resolved satisfactory. If not, then to verify with the cleanup committee (send email to jons@cadence.com) to the status of your issue (as some are still open). Also any additional items should be returned to the committee for complete review.
Our next version is going to have some significant structural/formatting changes as we begin the process of getting ready for IEEE. It is also expected to have 90+% of the BNF, PLI, and Mixed Signal sections completed. The target date for this release is September 1st, 1999. This means your feedback on this version needs to occur no later than August 16th if you want it to be considered. Any major holes found outside of the BNF, PLI, and Mixed Signal sections also need to be to the cleanup committee by this date or they will not be considered.
To obtain a copy of the LRM you may download it from the Cadence ftp server during the next 48 hours. If necessary I will place it there again or have it installed on our web site. Note that this version is expected to have a shelf life of about 45 days so we are not trying to make it widely available. The file is about 800K compress and 2Megs uncompressed. The Cadence ftp server is a blind ftp site so no "ls" of the directory is allowed. Please follow the instructions below to obtain a copy of the LRM.
<p>% ftp ftp.cadence.com % login: ftp % passwd: <login@company.com> (i.e. jons@cadence.com) # cd public # binary # get vams_lrm_1_4.pdf.gz (compressed version ~800k) # get vams_lrm_1_4.pdf (uncompressed version ~2Megs) # quit
If you have additional questions or issues regarding the LRM please send me an email and I will try to respond quickly.
Jon Sanders
<p><p><p><p><p>Jonathan L. Sanders Sr.Product Engineer Analog & Mixed Signal Simulation 555 River Oaks Parkway - SJ3B1 San Jose, CA 95134 408-428-5654 (Phone/Vmail) 408-944-7265 (Fax) jons@cadence.com (Email)
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