[ibis-macro] Re: Analog Buffer Model Inside DLL

  • From: "Muranyi, Arpad" <Arpad_Muranyi@xxxxxxxxxx>
  • To: "ibis-macro@xxxxxxxxxxxxx" <ibis-macro@xxxxxxxxxxxxx>
  • Date: Wed, 12 Dec 2012 21:06:32 +0000

Guys,

Please take a little time to read Vladimir's response on this thread.
It ***CAN*** be done (if done correctly)!

The only problem is that it puts more burden on the model maker who
essentially is going to start writing an analog simulator of some
sort in the DLL.

We would also need to revisit the AMI flow a little bit, but that's
just detail.

Thanks,

Arpad
========================================================================

From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] 
On Behalf Of Todd Westerhoff
Sent: Wednesday, December 12, 2012 2:47 PM
To: DBanas@xxxxxxxxxx; wkatz@xxxxxxxxxx; ckumar@xxxxxxxxxxx; 
gedlund@xxxxxxxxxx; ibis-macro@xxxxxxxxxxxxx
Subject: [ibis-macro] Re: Analog Buffer Model Inside DLL

... and the insertion loss.

... and if the network characterization of the channel is invalid, so is 
everything else.

Todd.


Todd Westerhoff
VP, Software Products
Signal Integrity Software Inc. * www.sisoft.com<http://www.sisoft.com>
6 Clock Tower Place * Suite 250 * Maynard, MA 01754
(978) 461-0449 x24  *  twesterh@xxxxxxxxxx<mailto:twesterh@xxxxxxxxxx>

"I want to live like that"
                                             -Sidewalk Prophets

From: ibis-macro-bounce@xxxxxxxxxxxxx<mailto:ibis-macro-bounce@xxxxxxxxxxxxx> 
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of David Banas
Sent: Wednesday, December 12, 2012 2:09 PM
To: 'wkatz@xxxxxxxxxx'; 'ckumar@xxxxxxxxxxx'; 'gedlund@xxxxxxxxxx'; 
'ibis-macro@xxxxxxxxxxxxx'
Subject: [ibis-macro] Re: Analog Buffer Model Inside DLL

If the Analog Buffer is inside the DLL, then the analog return loss of the 
buffer is not correctly handled in the impulse response characterization of the 
channel.

?


From: ibis-macro-bounce@xxxxxxxxxxxxx<mailto:ibis-macro-bounce@xxxxxxxxxxxxx> 
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Walter Katz
Sent: Wednesday, December 12, 2012 10:32 AM
To: ckumar@xxxxxxxxxxx<mailto:ckumar@xxxxxxxxxxx>; 
gedlund@xxxxxxxxxx<mailto:gedlund@xxxxxxxxxx>; 
ibis-macro@xxxxxxxxxxxxx<mailto:ibis-macro@xxxxxxxxxxxxx>
Subject: [ibis-macro] Re: Analog Buffer Model Inside DLL

If the Analog Buffer is inside the DLL, then the analog return loss of the 
buffer is not correctly handled in the impulse response of the channel.

Walter

From: ibis-macro-bounce@xxxxxxxxxxxxx<mailto:ibis-macro-bounce@xxxxxxxxxxxxx> 
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Kumar Keshavan
Sent: Wednesday, December 12, 2012 1:18 PM
To: gedlund@xxxxxxxxxx<mailto:gedlund@xxxxxxxxxx>; 
ibis-macro@xxxxxxxxxxxxx<mailto:ibis-macro@xxxxxxxxxxxxx>
Subject: [ibis-macro] Re: Analog Buffer Model Inside DLL

Why not? As long as the dll is isolated from the analog front end , the dll 
itself can be modeled any way you want


From: ibis-macro-bounce@xxxxxxxxxxxxx<mailto:ibis-macro-bounce@xxxxxxxxxxxxx> 
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Gregory R Edlund
Sent: Wednesday, December 12, 2012 12:55 PM
To: ibis-macro@xxxxxxxxxxxxx<mailto:ibis-macro@xxxxxxxxxxxxx>
Subject: [ibis-macro] Analog Buffer Model Inside DLL


What nasty things are likely to happen if someone puts the analog buffer model 
inside the DLL?  At the very least, the impulse response will be incorrect.

Are there any circumstances under which this can work correctly?

Greg Edlund
Senior Engineer
Signal Integrity and System Timing
IBM Systems & Technology Group
3605 Hwy. 52 N  Bldg 050-3
Rochester, MN 55901

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