Walter -
did you mean:
...
Fangyi’s BIRD will give wrong statistical answers for legacy models if the
Rx2 has DFE or optimization.
Fangyi’s BIRD will give wrong statistical answers for legacy Dual models if
the Rx2 has DFE or optimization.
Fangyi’s BIRD will give wrong time domain answers for legacy Dual models if
the Rx2 GetWave function requires [assumes] optimization done in the Rx2
AMI_Init
Or did you mean something else?
I recognize that Init-optimizing Dual models (like mine) have issues
playing in some simulations and consider myself "encouraged" by Ambrish (*et
alii*?) to improve them if/when actual customers require them to play in
redriver channels.
As to whether model makers should be encouraged to make Init-only models
into Dual models, I would only comment that if the model maker sees
statistical simulation to be good enough for users' analysis of the
hardware modeled, it may be an uphill battle to convince them to do so,
though perhaps compelling-enough arguments can be made, especially for
redriver channels. Still, such model makers *have a reasonable expectation
that statistical analysis under IBIS-AMI of redriver channels produces the
right (enough) answer.*
Regards,
Bob
On Fri, Jun 23, 2017 at 1:55 PM, Walter Katz <wkatz@xxxxxxxxxx> wrote:
Ambrish,
I agree that what you wrote is only in the Time Domain section, although
the time domain section includes the case when all models have
GetWave_Exists=False, and also allows to use the IR output of Rx2 as one of
the options instead of doing deconvolution.
Walter
Walter Katz
wkatz@xxxxxxxxxx
Phone 303.449-2308 <(303)%20449-2308>
Mobile 303.335-6156 <(303)%20335-6156>
*From:* Ambrish Varma [mailto:ambrishv@xxxxxxxxxxx]
*Sent:* Friday, June 23, 2017 2:27 PM
*To:* wkatz@xxxxxxxxxx; IBIS-ATM <ibis-macro@xxxxxxxxxxxxx>
*Subject:* RE: Open Forum Presentation IBIS_6.1_BIRD_190_BIRD_Fangyi_
BIRD_166.pdf
Thanks Walter,
As discussed in the Open Forum today, BIRD 190 has no connection to the
Init only Statistical flow in the specification and hence I recommend to
include the ‘Note’ as described in BIRD 190 in the time domain simulation
flow for a Repeater link.
Thanks,
Ambrish.
*From:* ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@
freelists.org <ibis-macro-bounce@xxxxxxxxxxxxx>] *On Behalf Of *Walter
Katz
*Sent:* Friday, June 23, 2017 2:14 PM
*To:* IBIS-ATM <ibis-macro@xxxxxxxxxxxxx>
*Subject:* [ibis-macro] Open Forum Presentation
IBIS_6.1_BIRD_190_BIRD_Fangyi_BIRD_166.pdf
EXTERNAL MAIL
All,
IBIS_6.1_BIRD_190_BIRD_Fangyi_BIRD_166.pdf
Walter
Walter Katz
wkatz@xxxxxxxxxx
Phone 303.449-2308 <(303)%20449-2308>
Mobile 303.335-6156 <(303)%20335-6156>
