[SI-LIST] Translating a Differential IBIS buffer to XTK format
- From: "Timothy Coyle" <Timothy.Coyle@xxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Tue, 16 Jul 2002 13:27:55 -0400
Hi,
I am running into a problem when I try to translate a LVDS IBIS buffer to
XTK using IBIS2XTK. The issue is that each time I run the program, it
always defaults to using
the Ramp data, and not the V-T data in the conversion. I get a warning
message in the log file that says, "Required waveform(s) not found, using
Ramp"
So I asked Innoveda (now Mentor) support for help. They pointed me to the
IBIS2XTK manual, where it states that for an output model V_fixture has to
be
within .7V of the rail voltage. Since this is LVDS, I am using V_fixture
of 1.25V. If I change V_fixture to 3.3 V (the supply voltage), then the
V-T data is used.
The V_fixture requirement does not apply to open-ended models. I asked
support if they knew of this issue, and have not heard anything since. Has
anyone
encountered this problem? Perhaps I am doing something wrong? If not, does
anyone know of a possible work-around?
Thanks,
Tim
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
