[SI-LIST] Re: [IBIS] RE: [ibis-macro] IBIS model of drifferential driver with programmable multi-tap preemphasis

 Arpad,
I guess it goes to application.  I saw differential driver with three taps
and figured it was a SerDes application, although there could be others.

Nitin, can we ask what sort of application this is?

Todd.
Todd Westerhoff VP, Software Products SiSoft 6 Clock Tower Place, Suite 250
Maynard, MA 01754 (978) 461-0449 x24 twesterh@xxxxxxxxxx[1]
www.sisoft.com[2]

Muranyi, Arpad wrote: Absolutely! However, from the question I got the
impression that Nitin wanted to do this in the analog world, and AMI is an
algorithmic solution... Arpad ===========================================
-----Original Message----- From: Todd Westerhoff
[mailto:twesterh@xxxxxxxxxx[3]] Sent: Wednesday, July 22, 2009 10:10 AM To:
Muranyi, Arpad Cc: ibis@xxxxxxx[4]; si-list@xxxxxxxxxxxxx[5] Subject: Re:
[IBIS] RE: [ibis-macro] IBIS model of drifferential driver with programmable
multi-tap preemphasis Arpad, .... or they could use IBIS-AMI, as this is
whatit was designed for. Todd. Todd Westerhoff VP, Software Products SiSoft
6Clock Tower Place, Suite 250 Maynard, MA 01754 (978) 461-0449 x24
twesterh@xxxxxxxxxx[6] www.sisoft.com[7] Muranyi, Arpad wrote: Nitin, If you
have access to the stimulus, you could pull this off with the Driver
Scheduleor even without it, but that would be a semi official IBIS solution
because it may not work in all tools. For example, if you do it with the
HSPICE B-element, you could make a B-element for each stage of your buffer,
and then make a special stimulus generator which reproduces the bit pattern
dependent waveforms for the input to each B-element (buffer stage). This way
the stages of your buffer would still be IBIS models, but the relationship
between them would be outside the IBIS world. Another way to do it would be
to use the *-AMS extensions of IBIS. This way you could make a completely
official model for the entire buffer. However, not all IBIS tools have
implemented the *-AMS extensions of IBIS, although there are several tools
with Verilog-A support which may be sufficient for what you want to do. I
hope this helps. Arpad
===============================================================
-----OriginalMessage----- From: ibis-macro-bounce@xxxxxxxxxxxxx[8]
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx[9]] On Behalf Of Nitin Kumar CHHABRA
Sent: Wednesday, July 22, 2009 7:14 AM To: ibis@xxxxxxxxxxxxxx[10];
si-list@xxxxxxxxxxxxx[11] Cc: vishrant.goyal@xxxxxx[12];
nitin.chhabra@xxxxxx[13]; nitin.gupta@xxxxxx[14] Subject: [ibis-macro] IBIS
model of drifferential driver with programmable multi-tap preemphasis Hi
experts, We want to develop the IBIS model for a differential driver with
preemphasis . The driver has three tap with programmable pre emphasis
options. Does anyone came across such IBIS or could provide some IDEA how to
proceed for the same. Using Driver Scheduling, we are able to make model for
first tap pre emphasis buffer. But we cannot accommodate the second and
thirdtap options as they require previous bit histories. with regards, Nitin
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