[ibis-macro] EMD Question
- From: "Muranyi, Arpad" <Arpad_Muranyi@xxxxxxxxxx>
- To: "IBIS-ATM" <ibis-macro@xxxxxxxxxxxxx>
- Date: Tue, 8 Jul 2008 17:09:54 -0700
Hello everyone,
We had an interesting (and long) IBIS-ATM meeting today,
and at the end we decided to poll the membership of this
email list to find out whether we are going in the right
direction with EMD.
To summarize, EMD, as currently proposed, is kind of a
generalization of EBD. It is like EBD in that it will
contain a [Pin List] section that describes the external
connections of a module, and a [Reference Designator Map]
that describes instances of IBIS components and other EMD
modules. [Extended Nets] are a new feature in EMD that
is not directly in EBD but is equivalent to the "Pins"
and "Nodes" within a single EBD [Path Description].
Unlike EBD, EMD allows [Extended Nets] between Nodes
without being connected to a Pin. [Path Description]s
get replaced with subckt calls to models that can be
written in one or more simulation languages. These
subckts will model interconnect between Pins and Nodes,
or between nodes. In addition, subckt calls can have
ports with Pins and Nodes from two or more [Extended Nets],
and can also have ports to supply nets on either component
instances or pins. The "free form" EMD discussed today
explicitly does not constrain the languages or subset of
languages that subckts are written in other than the content
of these subckts are simulation models that describe the
interconnect between Pins and Nodes.
Here are a few questions we would like to get answers from
you to make sure we are doing the right thing:
1) Do you want IBIS-ATM to pursue this interconnect
modeling methodology?
2) Do you need this type of package, cable and connector
interconnect model?
3) What do you dislike about this EMD?
4) What do you need added to EMD?
5) Would you deliver models for packages and connectors in
this format?
6) Would you use models for packages and connectors in this
format?
Thanks,
Arpad
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