[ibis-macro] Re: Package modeling comparison
- From: James Zhou <james.zhou@xxxxxxxxxx>
- To: "wkatz@xxxxxxxxxx" <wkatz@xxxxxxxxxx>, IBIS-ATM <ibis-macro@xxxxxxxxxxxxx>
- Date: Tue, 4 Sep 2012 11:15:20 -0700
Hi Walter,
Thanks for providing the example files. Here is a list of questions I have on
the example files (there are many of them which may take some time to resolve).
package.emd
(1) It refers to both pin and pad in "interconnect" section, however only
pins are defined in "Pin" section. Should there also be a section to define
"pads"?
(2) "Pkg", "Tx" and "Rx" are instantiated using two different keywords of
"Package_Model" and "Class". However, their syntax and most of the contents
look exactly the same. What are the differences between them?
(3) "Reference_Designator_Map" points to bare_die.ibsx file. There are no
explicit mapping on pad names. Is the mapping implicit, requiring both files
using the same pad names?
(4) What is the difference between Tx and Tx_Coupled and, Rx and
Rx_coupled? What are the benefits of making such distinctions at model time?
(5) can you please provide examples of pkg_typ.mod pkg_min.mod pkg_max.mod.
What's the syntax of these mod files?
bare_die_ibsx:
(1) Are sNp files allowed when N not equal 4 or 2?
(2) Are "Buffer+ Buffer- Pad+ Pad-" reserved node names? What to do when N
not equal 4 or 2?
(3) Other than Tstonefile, we assume IBIS-ISS is also allowed, what is the
syntax to hook it up?
(4) possible typo in line 80, missing "Pad+": (Tstonefile Ports Pad-
Buffer+ Buffer-)
legacy.ibs
(1) is it the intention to introduce keywords in comment lines for future
standards (ibis 6.0)?
James Zhou
From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx]
On Behalf Of Walter Katz
Sent: Tuesday, September 04, 2012 8:24 AM
To: IBIS-ATM
Subject: [ibis-macro] Package modeling comparison
All,
Enclosed is a zip file containing a presentation and implementations of
"legacy.ibs" in legacy IBIS format, using legacy IBIS files with parameter tree
sections, splitting the IBIS file into an EMD file (parameter tree format) and
a bare-die legacy file, and finally converting the bare-die legacy file into an
IBISx file.
Mike L,
Can you post this please to the IBIS Reflector.
Walter
Walter Katz
wkatz@xxxxxxxxxx<mailto:wkatz@xxxxxxxxxx>
Phone 303.449-2308
Mobile 303.335-6156
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