Re: [SI-LIST] : Terminating a bidirectional bus

D. C. Sessions (dc.sessions@vlsi.com)
Tue, 04 May 1999 09:09:13 -0700

Daniel Roganti wrote:
>
> I'm curious about the method of termination you mentioned here below on
> the SI List.
> I have a situation similiar to this but there are several devices on the
> bidirectinal bus(addr&data).
> Would you have any more refereences on this type of termination ?
> any info is much appreciated.
> thanks,

I'm assuming you mean this:

> D. C. Sessions wrote:

> > Actually, for a CMOS point-to-point connection you get surprisingly
> > good results with a single resistor in the center of the trace.

It *only* works for point-to-point connections, so your application
can't use it. For multi-drop busses endpoint shunt termination is
the only reliable high-speed method.

-- 
D. C. Sessions
dc.sessions@vlsi.com

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