🚀 go-pugleaf

On Tue, 10 Jan 2012 18:02:50 -0800 (PST), Bill Sloman
<bill.sloman@gmail.com> wrote:

>On Jan 10, 4:55�pm, John Devereux <j...@devereux.me.uk> wrote:
>> Robert Macy <robert.a.m...@gmail.com> writes:
>> > On Jan 10, 2:28�am,BillSloman<bill.slo...@ieee.org> wrote:
>> >> On Jan 10, 7:47�am, "David L. Jones" <altz...@gmail.com> wrote:
>>
>> >> > Just thought some might be interested in hearing our recent guest on
>> >> > our Amp Hour radio show, Dr Howard Johnson of "Handbook of Black
>> >> > Magic" fame:http://www.theamphour.com/2012/01/10/the-amp-hour-77-winsome-waveform...
>>
>> >> > Lots of history of the book, signal integrity, Gigabit Ethernet
>> >> > development, 90 degree PCB bends, audiophoolery, and a whole bunch of
>> >> > other talk over almost 1 1/12 hours.
>>
>> >> "Black Magic" is more notorious than famous. I own both it and it's
>> >> follow-up, and both have got some useful content but they are badly
>> >> organised and what useful content they do contain is hard to find.
>>
>> >> The field is still waiting for a decent textbook on high speed circuit
>> >> design and layout.
>>
>> >> This is one of the few matters on which John Larkin and I seem to
>> >> agree.
>>
>> >> --
>> >>BillSloman, Nijmegen
>>
>> > Perhaps, it is time for the first ever 'conference' book written by a
>> > consortium of engineers/scientists.
>>
>> > Put my name in for proffreading. �:)
>>
>> Great idea. Perhaps John Larkin, Jim Thompson and Bill Sloman could
>> collaborate on it.
>>
>> Sure that will work out well... :)
>
>I'm not sure what Jim Thompson might contribute. I've seen papers that
>worry about the characteristic impedance of connections on the silicon
>(or whatever) inside integrated circuits, but I don't have the feeling
>that Jim designs stuff that's big enough and fast enough for him to
>need to know much about it.

I get the impression that most interconnects inside ICs are primarily
distributed R-C things, not real transmission lines at all.
Propagation speed of interconnects is a big deal in routing fast logic
chips, but the speed of light isn't the issue.

>
>Motorola's ECL applications notes on board layout were rather useful,

Just don't trust their microstrip equation!

John