[SI-LIST] Re: one question for HSPIC and IBIS_AMI
- From: "Todd Westerhoff" <twesterh@xxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Mon, 4 Apr 2011 14:25:03 -0400 (EDT)
Arpad,
When you say that IBIS-AMI and HSPICE models can't be mixed, are you
making a general statement or a tool-specific one?
I ask because we maintain that mixing HSPICE and IBIS-AMI models is
possible if the simulator has the proper mechanisms to support it. We
presented a paper titled " Multi-Gigabit Serial Link Analysis using HSPICE
and AMI Models" at SNUG 2009/Boston and SNUG 2010/San Jose.
Todd.
________________________
Todd Westerhoff
VP, Software Products
SiSoft
6 Clock Tower Place, Suite 250
Maynard, MA 01754
(978) 461-0449 x24
twesterh@xxxxxxxxxx
www.sisoft.com
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Muranyi, Arpad
Sent: Sunday, April 03, 2011 1:04 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: one question for HSPIC and IBIS_AMI
Jimmy,
First, like Steve Kaufer already stated, you need to get the latest
version of HyperLynx which does have IBIS-AMI support.
Second, IBIS-AMI simulations can't be done in "mixed mode".
You have to have AMI models for both Tx and Rx to be able to use
algorithmic (AMI) models. You can't have a SPICE or regular IBIS model on
one end and an algorithmic model on the other end. These two types of
models do not mix (like water and oil).
The reason is because regular SPICE and IBIS models are simulated by an
iterative circuit solver simulator which solves the voltages and currents
in the circuit using Ohm's law, Kirchhoff's law etc... for each node
voltage and branch current. AMI models, on the other hand start with an
impulse response of the channel and process that with signal processing
algorithms. This technique only processes the waveform seen at the
receiver (usually).
I hope this gives you a better understanding of the nature of these two
types of models and simulations.
Arpad
=============================================================
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Jimmy Lee
Sent: Saturday, April 02, 2011 12:05 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] one question for HSPIC and IBIS_AMI
Hi SI expert
Something confused me several days
I need to perform serdes channel simulations with mixed models(HSPICE and
IBIS-AMI). Is it possible? EDA tools I have are HSPICE 2010.03-sp1, SIGXP
16.2, Hyperlynx 8.0. I found neither sigxp nor hyperlynx on there version
support IBIS-AMI. HSPICE is said to support IBIS-AMI in Statistical Eye
Analysis mode with .stateye command. Is there a tutorial about how to do a
serdes channel simulation with mixed hspice and ibis-ami models in HSPICE?
BTW, could I just do a transient simulation with the preemphasis or
equaliztion options compiled in .ami or .dll file?
Thanks
Jimmy
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