[SI-LIST] Re: IBIS generation methodology of v3.2 Vs v4.2
- From: Sudhanshu SINGH <sudhanshu.singh@xxxxxx>
- To: "'Muranyi, Arpad'" <Arpad_Muranyi@xxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Fri, 29 Aug 2008 11:02:26 +0530
Hello Arpad,
Many Thanks for your reply.
Could you please give your fedback for
"Is it technically correct to change only [IBIS Ver] and to keep other
tables same , while shifting to higher versions" .
Full problem statement is as given below:
(1)
My simulation software vendor says that it supports only ibis-v4.2 and
higher specs.
So, I changed "[IBIS Ver] 3.2" to "[IBIS Ver] 4.2"
in the ibis file (supporting ibis ver 3.2) of bidirectional buffer
generated by me .
And tried to simulate it with the simulation software provided by my
vendor.
Is it technically incorrect to change only [IBIS Ver] and to keep other
tables same , while shifting to higher versions.
i.e.,are ibis versions backward-compatible ?
(2)
Also this problem comes when I have different buffer in a library with
diferent ibis versions od v3.2, v4.2 and I put all of them in single library
with top ibis version of file as v4.2
Thanks and Regards,
Sudhanshu
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Muranyi, Arpad
Sent: Thursday, August 28, 2008 7:27 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: IBIS generation methodology of v3.2 Vs v4.2
There are no changes in how those tables work between the IBIS versions.
The only change is that the waveform tables are allowed to have 1000 points
(instead of 100) in the later spec.
We are trying our best to make things backwards compatible in IBIS and as
far as I remember, so far everything is.
Arpad
=================================================
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Sudhanshu SINGH
Sent: Thursday, August 28, 2008 8:47 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] IBIS generation methodology of v3.2 Vs v4.2
Hello All,
-Is there any major change in ibis-v4.2 w.r.t. ibis-3.2 ragarding
generation of following tables:
[POWER Clamp]
[GND Clamp]
[Pullup]
[Pulldown]
[Ramp]
[*ing Waveform]
-My simulation software vendor says that it supports only ibis-v4.2 and
higher specs.
So, I changed "[IBIS Ver] 3.2" to "[IBIS Ver] 4.2"
in the ibis file (supporting ibis ver 3.2) of bidirectional buffer
generated by me .
And tried to simulate it with the simulation software provided by my
vendor.
Is it technically incorrect to change only [IBIS Ver] and to keep other
tables same , while shifting to higher versions.
i.e.,are ibis versions backward-compatible ?
Thanks in advance for your feedback,
Best Regards,
Sudhanshu
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