Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!brutus.cs.uiuc.edu!lll-winken!sun-barr!decwrl!amdcad!diablo!phil
From: phil@diablo.amd.com (Phil Ngai)
Newsgroups: sci.electronics
Subject: Re: Transmission Lines - What Are They??
Message-ID: <28163@amdcad.AMD.COM>
Date: 28 Nov 89 19:07:32 GMT
References: <868@encad.Wichita.NCR.COM> <1989Nov12.013850.7756@utzoo.uucp> <24023@cup.portal.com> <46e0fd1a.1fbc0@chanel.UUCP> <24187@cup.portal.com>
Sender: news@amdcad.AMD.COM
Reply-To: phil@diablo.AMD.COM (Phil Ngai)
Organization: Advanced Micro Devices, Inc. Sunnyvale CA
Lines: 15

In article <24187@cup.portal.com> mmm@cup.portal.com (Mark Robert Thorson) writes:
|ngc@chanel.UUCP (Chris Ng) says:
|> Parallel termination draws current constantly while
|> series termination does not. May be it doesn't matter in your design,
|> just a side note.
|
|Another cookbook rule:  use series termination where short lines with few
|loads are being drived, such as a microprocessor driving a few peripheral
|and memory chips, or an address multiplexer driving a bank of DRAM chips.

But don't forget about the half-step you get with series termination.

--
Phil Ngai, phil@diablo.amd.com		{uunet,decwrl,ucbvax}!amdcad!phil
AT&T Unix System V.4: Berkeley Unix for 386 PCs!


Brought to you by Super Global Mega Corp .com