Arpad,
SiSoft agrees that C_comp should be connected between the pad of the
buffer model (A_signal) and the local rail ground (A_pdref or A_gcref).
The node A_pdref or A_gcref can either be connected to a complex power
delivery network, or could be the simulator reference node (e.g. Node 0)
for non-power aware simulations.
Walter
-----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
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