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Re: IBIS / SPICE simulation
Also of note...
I've got a bunch of tools in glscopeclient and
libscopehal/libscopeprotocols for NRZ/PAM4 signal generation, channel
emulation, de-embedding, equalization, clock recovery, eye patterns,
etc. Might be worth pursuing some kind of integration to develop a full
channel design/simulation tool kit in KiCAD down the road? I have an
IBIS parser already but haven't built a full IBIS simulator yet. It's on
the to-do list though. All of these tools are 3-clause BSD so license
compatible with KiCAD.
Ideally I'd like to integrate with an EM solver to extract a S-parameter
model of a PCB channel as well, so I can just click on pads of a board
to set up ports, configure a frequency sweep, then shove that into a
time domain model.
Here's a quick demo of some of the channel design tools:
On 8/30/21 3:24 PM, Reece R. Pollack wrote:
> I started down the path of creating an IBIS-to-Spice converter a couple
> of years ago. I researched it enough to decide it was feasible, then
> discovered a commercial product demo that would do enough of what I
> needed at the time and stopped working on it.
> I'd just about forgotten about it until you mentioned it.
> On 8/30/21 12:34 PM, Fabien Corona wrote:
>> Hello everyone,
>> I am working on an IBIS parser for kicad integration.
>> IBIS is a standard format to I/O buffers, that allows for "fast" and
>> accurate signal integrity simulations.
>> While parsing the IBIS format is not so hard, well... I have data to
>> simulate, but no simulator...
>> I was wondering if anybody in this mailing list had knowledge about
>> IBIS and / or SPICE simulation ?
>> From the info I gathered, it is quite "easy" to convert to convert to
>> a SPICE model, but maybe there are better ways to do.
>> ( If we could avoid a whole simulator from scratch, that would be nice )
>> Basically, an IBIS file is :
>> - R L C parameters,
>> - voltage vs current tables
>> - voltage vs time tables
>> Fabien Corona
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