[ibis-macro] Re: A rephrasing of my previous question, re: your GetWave() approach.

  • From: David Banas <DBanas@xxxxxxxxxx>
  • To: "'Muranyi, Arpad'" <Arpad_Muranyi@xxxxxxxxxx>, "'ibis-macro@xxxxxxxxxxxxx'" <ibis-macro@xxxxxxxxxxxxx>, "'ibis-interconn@xxxxxxxxxxxxx'" <ibis-interconn@xxxxxxxxxxxxx>
  • Date: Thu, 10 Jan 2013 13:53:50 -0800

As per my original text:

Hi all,

At the end of yesterday's meeting, I asked the EDA vendors in the group if 
they'd describe their GetWave() flows, for Tx modeling, to the group.

I am confining my inquiry to Tx modeling only.

-db


From: ibis-interconn-bounce@xxxxxxxxxxxxx 
[mailto:ibis-interconn-bounce@xxxxxxxxxxxxx] On Behalf Of Muranyi, Arpad
Sent: Thursday, January 10, 2013 1:04 PM
To: 'ibis-macro@xxxxxxxxxxxxx'; 'ibis-interconn@xxxxxxxxxxxxx'
Subject: [ibis-interconn] Re: A rephrasing of my previous question, re: your 
GetWave() approach.

David,

I would like to ask you to refine your question(s) with
a little more detail.  Please specify which Init and
GetWave function you are referring to (tx or Rx).  This
way I am afraid that the responses you will get will be
all over the horizon...

Thanks,

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

From: ibis-macro-bounce@xxxxxxxxxxxxx<mailto:ibis-macro-bounce@xxxxxxxxxxxxx> 
[mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of David Banas
Sent: Thursday, January 10, 2013 1:24 PM
To: 'ibis-macro@xxxxxxxxxxxxx'; 'ibis-interconn@xxxxxxxxxxxxx'
Subject: [ibis-macro] A rephrasing of my previous question, re: your GetWave() 
approach.

Hi all,

At the end of yesterday's meeting, I asked the EDA vendors in the group if 
they'd describe their GetWave() flows, for Tx modeling, to the group.
This request drew quite a bit of reluctance, understandably. I would like to 
rephrase my question:

In the case of Tx modeling only, what processing flexibility do you gain by not 
being required to accept the channel impulse response as input to the GetWave() 
function?

My hope is that the above question is safer to answer and, yet, might still 
further our common understanding of the reasons for the different assumptions, 
regarding input signal and output location, made for Init() and GetWave(). If 
you'll recall, after our recent re-read of Sec. 10 of IBIS v5.1 (and if we 
agree to take Sec. 10 as a normative part of the standard, as opposed to just 
one example interpretation of it), those assumptions are:

Flow Type

Input Signal

Presumed Physical Location of Output

Init()

Channel Impulse Response

Input to Rx Eq.

GetWave()

Binary Data Stream

Input to analog channel


If I am merely the last person to understand the motivation for the different 
assumptions, above, I apologize for my obtuseness and thank you, in advance, 
for your indulgence.

Best regards,
David Banas
Sr. Member Technical Staff
Altera<http://www.altera.com/>
+1-408-544-7667 - desk

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