Subject: Reference Terminal Clarification
From: Ramesh Mayiladuthurai (rameshm@cadence.com)
Date: Fri Jan 25 2002 - 06:59:57 PST
Working Group,
I would like to get a clarification on the usage of "reference"
terminal of a nature.
The LRM, sec 3.5(.1) states that
"A nature defines values that may be accessed through the
attributes of a terminal. These attributes include its
compatibility with other terminals, the reference terminal of
the nature, and its across type and through type .... "
"A scalar nature definition defines a scalar nature, its
branch types, and the name of its reference terminal"
1. There are attributes 'across and 'through that can access the
across and through types of a nature but there is none defined
that can access the "reference" terminal of a nature.
2. Does the appearence of reference terminal "name" in a nature
definition imply an implicit terminal "declaration" ? If that is
true, what would be the nature of this "reference" terminal ?
3. Continuing from the previous query, is it valid to declare
something like ...
---------------------------------------------------------
nature elect is volt across current through gnd reference;
terminal t1: elect;
quantity q1 across gnd to t1; -- Is this a valid declaration ?
---------------------------------------------------------
Thanks for your help in clarifying the same.
regards,
Ramesh
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