[ibis-macro] Re: another silly IBIS-AMI question about deriving the impulse response of a channel
- From: "Walter Katz" <wkatz@xxxxxxxxxx>
- To: "Scott McMorrow" <scott@xxxxxxxxxxxxx>
- Date: Thu, 27 May 2010 18:31:15 -0400
Scot,
I think a better picture is:
TxTerm --- TxDie --- TxBump -- TxPkg -- channel -- RxPkg -- RxBump --
RxDie --- RxTerm
|
|
|
|
TxPad
RxPad
Walter
Walter Katz
303.449-2308
Mobile 720.333-1107
wkatz@xxxxxxxxxx
www.sisoft.com
-----Original Message-----
From: Scott McMorrow [mailto:scott@xxxxxxxxxxxxx]
Sent: Thursday, May 27, 2010 6:25 PM
To: Walter Katz
Cc: IBIS-ATM
Subject: Re: [ibis-macro] another silly IBIS-AMI question about deriving the
impulse response of a channel
Walter,
You are misinterpreting my picture. I was showing the network of just a Tx
or Rx. When I say "network" I truly mean a circuit network. Let me create
a better picture of the entire channel.
TxTerm --- TxDie --- TxBump -- TxPkg -- channel -- RxPkg -- RxBump --
RxDie --- RxTerm
| |
| |
TxPad RxPad
For a 50 ohm single-ended channel
TxTerm = 50 ohm
RxTerm = 50 ohm
TxPad = some high impedance
RxPad = some high impedance
Lumped approximations between TxTerm/TxPad and RxTerm/RxPad do not hold
What I was showing was just one part of the total channel.
(50 ohm)RxBump --- Network --- RxTerm (50 ohm)
|
|
RxPad
(10k ohm)
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