I agree, and I think I stated that too in my email…
Thanks,
Arpad
======================================================
From: Walter Katz [mailto:wkatz@xxxxxxxxxx]
Sent: Monday, March 06, 2017 8:25 PM
To: Muranyi, Arpad <Arpad_Muranyi@xxxxxxxxxx>; IBIS-ATM
<ibis-macro@xxxxxxxxxxxxx>
Subject: RE: [ibis-macro] Re: Minutes from the 28 February ibis-atm meeting
Arpad,
The C_comp BIRD that Randy (and I) are proposing is inside the “[Model]”, just
as the classical C_comp is “inside” the model. The Ts4file replaces all of
that. Bottom line is that there is no C_comp or C_comp model when using the
Ts4file.
Walter
From: ibis-macro-bounce@xxxxxxxxxxxxx<mailto:ibis-macro-bounce@xxxxxxxxxxxxx>
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Muranyi, Arpad
Sent: Monday, March 6, 2017 8:46 PM
To: IBIS-ATM <ibis-macro@xxxxxxxxxxxxx<mailto:ibis-macro@xxxxxxxxxxxxx>>
Subject: [ibis-macro] Re: Minutes from the 28 February ibis-atm meeting
Bob,
Thanks for your comments. Regarding:
“I don't think we in IBIS-ATM can/should say exactly where the boundary between
the "Ts4file" and other separately-provided s4p files … should be drawn”
I tend to agree with that, but at the same time the spec should
also be consistent with itself, and with the newer features added.
This is why I think calling the “Ts4file” ports “buffer terminal”
would make most sense. Both the legacy and new package modeling
approaches allow “buffer terminals” to be at the die pads (balls),
but with the new package modeling approach the model maker has an
option to provide a separate .s4p file for an on-die interconnect
model between the “buffer terminals” and the die-pads. But I
believe that the “buffer terminal” terminology works with both
of these approaches without any confusion on what it really means.
One related thing we will need to watch out for is the C_comp
proposal from Randy. We will have to make sure that the C_comp
compensation algorithm uses the waveform from the correct location,
but that will only involve the legacy [Model] keyword, because
the Touchstone analog models do not use any C_comp compensation
algorithms.
Thanks,
Arpad
======================================================================
From: ibis-macro-bounce@xxxxxxxxxxxxx<mailto:ibis-macro-bounce@xxxxxxxxxxxxx>
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Bob Miller
Sent: Monday, March 06, 2017 6:31 PM
To: Curtis Clark <curtis.clark@xxxxxxxxx<mailto:curtis.clark@xxxxxxxxx>>
Cc: IBIS-ATM <ibis-macro@xxxxxxxxxxxxx<mailto:ibis-macro@xxxxxxxxxxxxx>>
Subject: [ibis-macro] Re: Minutes from the 28 February ibis-atm meeting
Regarding the latest draft of BIRD158.4:
#### For discussion: The model maker may want to inform the user and the EDA
tool that the Ts4file includes the package. Then a separate parameter is
needed. Alternatively, the model maker may provide the s4p data of the
package.