Minutes from the 27 Sep 2013 ibis-atm meeting are attached. Mike
IBIS Macromodel Task Group
Meeting date: 27 August 2013
Members (asterisk for those attending):
Agilent: * Fangyi Rao
* Radek Biernacki
Altera: David Banas
Julia Liu
Hazlina Ramly
Andrew Joy Consulting: Andy Joy
ANSYS: Samuel Mertens
* Dan Dvorscak
* Curtis Clark
Steve Pytel
Luis Armenta
Arrow Electronics: Ian Dodd
Cadence Design Systems: Terry Jernberg
Ambrish Varma
Kumar Keshavan
Ken Willis
Cavium Networks: Johann Nittmann
Celsionix: Kellee Crisafulli
Cisco Systems: Ashwin Vasudevan
Ericsson: Anders Ekholm
IBM: Greg Edlund
Intel: Michael Mirmak
Maxim Integrated Products: Mahbubul Bari
Hassan Rafat
Ron Olisar
Mentor Graphics: John Angulo
Zhen Mu
* Arpad Muranyi
Vladimir Dmitriev-Zdorov
Micron Technology: Randy Wolff
Justin Butterfield
NetLogic Microsystems: Ryan Couts
Nokia-Siemens Networks: Eckhard Lenski
QLogic Corp. James Zhou
SiSoft: * Walter Katz
* Todd Westerhoff
Doug Burns
* Mike LaBonte
Snowbush IP: Marcus Van Ierssel
ST Micro: Syed Sadeghi
Teraspeed Consulting Group: Scott McMorrow
* Bob Ross
TI: Casey Morrison
Alfred Chong
Vitesse Semiconductor: Eric Sweetman
Xilinx: Mustansir Fanaswalla
Ray Anderson
The meeting was led by Arpad Muranyi
------------------------------------------------------------------------
Opens:
- Arpad noted that Ambrish could not attend today. The recent BIRD 147
update has been posted to the web archive.
--------------------------
Call for patent disclosure:
- None
-------------
Review of ARs:
- Radek update BIRD 155.1 to use BIRD 160 language adjusted for IBIS 6.0
- Done
-------------
New Discussion:
Interconnect Task Group report:
Arpad reported that Brad Brim joined to discuss interconnect protocols.
The group had agreed to use IBIS-ISS, but some specification would have
to cover its use within SPICE comments. Walter said that a company has
a patent covering conversion between 2D and 3D formats. Walter recommended
avoiding use of pin X/Y locations in IBIS, to avoid patent infringement.
BIRD 155:
Arpad showed an email he had sent saying that two separate clauses
could be combined into one. Radek said [External Circuit] is different,
and it had to be possible to link to a different .ami file, that has no
associated DLL.
Arpad showed part of IBIS 6.0 describing rules for parameter files with
and without .ami extension. He felt parameters with no DLL should not
have the .ami extension. Bob said the .ami extension is not relevant when
simply looking up parameters from a file, but we need rules for when a
DLL must be present.
Arpad showed a clause requiring AMI parameters to be in a .ami file. Radek
said that does not mean parameters for other use must be in a .ami
file. Arpad found IBIS 6.0 language clarifying this. Walter said we
chose not to put analog models in .ami files, and these files are now
intertwined. Mike said Executable lines in IBIS call the DLL and .ami
files, and they should not be associated with each other independent
of those calls. Todd felt that while that was technically correct, in
practice there could be confusion. Arpad still questioned the accuracy
of statements on IBIS 6.0 page 99 in light of the discussion. Bob
said the use of parameters for [External Model] and [External Circuit]
should not be subject to AMI restrictions. Radek noted that given a
.ami file it is not possible to directly find the associated DLL files.
Mike said that each AMI Executable line is not necessarily associated
with the same .ami file. Radek felt that may not be true.
Arpad asked if an AMI file has a Dep parameter but there is no DLL, what
to do? Radek said Dep should not be allowed. Arpad felt those rules
should not be on page 99. Bob and Radek disagreed. Arpad found language
on page 168 requiring .ami extension for Parameter_File, referring
to section 10.3 for details. He inferred that presence of a .ami file
implies a DLL. Radek said it had to be possible to have a parameter
file with no DLL, but such a file can not have Dep parameters. Mike
noted that this is especially true for non-AMI models.
Arpad showed BIRD 155.1 language allowing Usage Dep in .ami files.
Todd asked if an AMI file is anything but a control file for a DLL.
Radek agreed AMI and DLL files form a set. Bob said this would exclude
parameter passing for [External Circuit]. Bob noted that the BIRD
contains extra double quotes and other typos. He also suggested the
list of cases might be converted to a table in editing.
-------------
Next meeting: 03 September 2013 12:00pm PT
-------------
IBIS Interconnect SPICE Wish List:
1) Simulator directives
Attachment:
smime.p7s
Description: S/MIME Cryptographic Signature
