Hello Arpad,
Cadence believes nothing in anything IBIS should ever be connected to global
ground.
The word "ground" is confusing and should not be applied anywhere in IBIS, even
if it is qualified with "global" or "local".
Two complicating items for IBIS:
(1) ISS now includes global ground.
(2) The interconnect committee rejected a proposal to eliminate the
application of global ground.
We agree with Scott - the circuit node we are discussing is a "local
reference". Name it anything you wish for a buffer model, but please don't
include the word "ground" in its name or description.
Best regards,
-Ambrish
-----Original Message-----
From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx]
On Behalf Of Muranyi, Arpad
Sent: Tuesday, June 30, 2015 11:42 PM
To: ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Action required for all IBIS member EDA vendors
This is a request that was made today in the IBIS-ATM meeting to all IBIS
member EDA vendors. We need your reply so we can move forward with the cleanup
process in the IBIS specification regarding "ground".
As you may know, the specification is not very consistent and not always
correct when it comes to the usage of "ground" and its synonyms. We need to
clean this up in the specification because this situation creates confusion
with the already existing power integrity capabilities in the spec, and the
situation will only get even worse with the upcoming new Interconnect/Package
modeling proposal.
The question for which we would like to get a reply from all EDA vendors is
whether we can all agree that C_comp should not be connected to the ideal
ground (or node0) of the simulator, but that is should be connected to the
[Model]s "local ground"
(or pulldown reference).
Please reply to this email with an answer to that question.
Thanks,
Arpad
=====================================================================
---------------------------------------------------------------------
IBIS Macro website : http://www.eda.org/pub/ibis/macromodel_wip/
IBIS Macro reflector: //www.freelists.org/list/ibis-macro
To unsubscribe send an email:
To: ibis-macro-request@xxxxxxxxxxxxx
Subject: unsubscribe
---------------------------------------------------------------------
IBIS Macro website : http://www.eda.org/pub/ibis/macromodel_wip/
IBIS Macro reflector: //www.freelists.org/list/ibis-macro
To unsubscribe send an email:
To: ibis-macro-request@xxxxxxxxxxxxx
Subject: unsubscribe
