[ibis-macro] IBIS - Usage Out and Default Slides
- From: "Bob Ross" <bob@xxxxxxxxxxxxx>
- To: "'IBIS-ATM'" <ibis-macro@xxxxxxxxxxxxx>
- Date: Tue, 20 Dec 2011 11:54:37 -0800
Comments on slides:
Slide 2:
Legal <data format> selections also include
Gaussian, Dual-Dirac, and DjRj. The corresponding
<data> is a data-list of 2 or 3 variables. However, we
have excluded Default for these cases because there
is no <typ> or single value.
The operation of Default becomes clearer from pending BIRD140.2:
|*** For AMI parameter type 'Range', 'Increment' and 'Steps' <min value>,
|*** <max value> does not imply slow and fast corners, and the user may
|*** select any value provided by these parameters regardless of what
|*** corner is used for the simulation. If the user does not make a
|*** selection for parameter types 'Range', 'List', 'Increment' and
|*** 'Steps', the EDA tool shall automatically use the value defined by
|*** Default, if it exists, or the <typ value> otherwise (regardless of
|*** what corner is used for the simulation).
What this means is that for all Usage selections, if Default is specified,
it
replaces the <typ> value. All rules still apply. In all cases, including
List,
a <typ> value is the first entry in the set of values. For Value/Default,
the
Default is used instead of Value.
With this interpretation, all of the questions regarding what value
are clear in the remaining slides. As long as a Format is allowed, the
Default rule is consistent for all Usage values.
Bob
--
Bob Ross
Teraspeed Consulting Group, LCC
http://www.teraspeed.com
bob@xxxxxxxxxxxxxx
Direct : 503-246-8048
Teraspeed Labs: 503-430-1065
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Teraspeed is a registered service mark of Teraspeed Consulting Group LLC
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