[IBIS-Users] Comments on the 18 Teleconference - Macromodeling.

Hello IBIS users

 

I want to comment on the Macromodeling: 

 

But, 1st proper disclosure:

I am familiar with spice language and not familiar with AMS languages. 

 

Some questions:

1.     As far as I understood the spice Macromodeling has the same
capabilities as the AMS languages (in terms of behavioral modeling).

2.     IBIS support the external languages, SPICE, VHDL-AMS and
Verilog-AMS. The requirement from IBIS EDA tool developer to support
these 3 languages is too much in my opinion. The implementation of this
languages in simulation tool will take a long time (if it will be
implemented) shouldn't we focus on the concept of Macromodeling by a
fixed syntax (one only). By that allowing the EDA tool vendors develop
complete IBIS support for one set of commands (this will enable them to
support IBIS 4.1). The models author will use only one set of commands
(or use his own scripts for translation to the IBIS format from
different formats that he might use) this will enable a consist usage of
the language by all with the flexibility of the author to develop any
kind of buffer type.

3.     Today there are simulation tools that support IBIS. How can we
verify that all the tools run the IBIS in the same way? When we are
going to use complex modeling the problem will be more severe.

 

My opinion is:

1.     Use only one language for Macromodeling.

2.     IBIS forum should recommend and develop templates for different
buffer modeling needs.

3.     The IBIS forum should check each EDA tool simulator for compliant
(there could be different levels of compliant like the different IBIS
specs 1.1 2.1 3.2 etc').

 

Open for dissociation / comments.

 

--
Regards
 
Itzik Peleg
Board Technology Group
 
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