[ibis-macro] Arpad's EMD/EBD proposal has been posted
- From: "Muranyi, Arpad" <Arpad_Muranyi@xxxxxxxxxx>
- To: "IBIS-ATM" <ibis-macro@xxxxxxxxxxxxx>
- Date: Fri, 15 Aug 2008 13:03:02 -0700
Hello everyone,
This is a notice to let all of you know that my EMD/EBD
proposal draft has been posted to the IBIS-AMI web site:
http://www.vhdl.org/pub/ibis/macromodel_wip/
You can find it under the "Work Archive" section dated
15-Aug-2008.
This was done to complete my AR from the last teleconference
on Walter's request. However, instead of just posting the
document I shared on the screen I posted a more updated
version for several reasons. First, the document we used
in the last meeting was very sketchy in many ways, and I
felt I had to make improvements on it to avoid mass confusion
and embarrassing myself. Second, I came up with a pretty
clever idea as I was working on my cleanup efforts, and
I thought I might as well share that for our upcoming meeting
in advance so that people who are following this discussion
could come prepared to the meeting...
To sum up the clever idea, it allows what Mike L. called
using the "black box" approach, i.e. we don't need to know
what the terminal names are in the underlying models/subcircuits,
while it still preserves the layout tool's database format
concept so that file/format conversions would not be necessary
to turn that into an electrical netlist. I will explain how
this works in the next meeting, but if you read the uploaded
document carefully, you should understand how it works.
This approach will also enable us to use IBIS and ICM models
together even for the more complicated situations (one to many
or many to one pins and pads), such as the one shown on
Figure 12 of the IBIS specification.
I wrote a fairly complete example at the end of the document
to illustrate how this would work. I was able to show with
the example how a stacked die device described by regular IBIS
models could be used together with an ICM package model.
In summary, I am pretty excited about this and I hope it would
be useful in solving many of our problems. Of course, it is not
a finished proposal yet, you may find a lot of unfinished or
missing details, but I hope this will serve as a good start.
Thanks,
Arpad
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