> To all that are worried about the analog side of Ethernet, it's really
> not a problem - You just follow the App note like the man says. Most
> controllers provide an AUI (15 pin style) port. It is relatively trivial
> to add on-board Twisted-pair or Thinnet connections. Some controllers like
> the
> Nat Semi AT?LANTIC provide the twisted pair xcvr in the chip so you get
> twisted-pair and AUI. Coax is extra. Also most PC ethernet controllers
> are reasonable simple to hook to a 3051 if you are willing to ignore having
> all the regisers in exactly the place you would expect them.
I don't mind where the registers are as long I can access them :-)
> As for whoever said the solution could be under $30 on the motherboard
> - NOT! most reasonable chips are $20-$30 in 1000s quantity - how are
> we going to get the whole shot in $30?
Sorry, I've said that bullshit. Of course, you're right. It will be
more expensive, but we have still the option to let the sockets empty.
> I will volunteer to design the ethernet I/F, although it will be
> tough to coordinate from CA. I would propose a AUI/coax system
> with an optional twisted pair interface unless the ethernet of choice
> has twisted pair on-board. I like the nat semi AT/LANTIC since it is
> based on the venerable 8390 and has twited pair already.
For me even coax-only would be ok, but AUI doesn't cost much more,
primarily the 15pin sub-D connector.
Andy
-------------------------------------------------------------------------------
Waldorf Electronics GmbH, R&D Department
c/o Andreas Busse
Neustrasse 9-12
D-5481 Waldorf
Phone: +49 (0)2636-80294
Fax: +49 (0)2636-80188
e-mail: andy@resi.waldorf-gmbh.de
-------------------------------------------------------------------------------
|