RE: [ethmac] optical Ethernet PHY???

["Kevin Kay" <kevin.kay@espipd.com>]

Assuming you want just a single port 100baseFX PHY.  The Altima AC101L is
fiber capable through some strapping options (cheapest fiber PHY that I
could find that met our needs).  It connects directly to either a single or
multi mode optical transceiver.  Note that the optical transceivers are not
totally standardized across manufacturers - some require external AC
coupling, others do not.  The AC101L also uses DACs to generate the PECL
levels rather than true PECL outputs, so standard PECL techniques to not
universally apply on this part.  The data sheet provides a recommended fiber
hookup that would probably work for you.

Gigabit fiber is handled in a completely different way (typically through a
SERDES interface rather than MII), GMII is used for a Gigabit copper
interface, SERDES for Gigabit fiber.

Regards,
Kevin

-----Original Message-----
From: owner-ethmac@opencores.org [mailto:owner-ethmac@opencores.org]On
Behalf Of brecht@cbedv.com
Sent: Thursday, May 09, 2002 6:03 PM
To: ethmac@opencores.org
Subject: [ethmac] optical Ethernet PHY???


Hello all together!

After the question for an cheap ethernet here's the
one for an optical PHY:

Does anyone know about a PHY that works optical and
(what would be ideal) behaves the same way an "usual"
ethernet PHY does?

As you can imagine I want to "go fibre" (as my little
hardware has to work in a magnetic field and I am not
too sure about the transformers will make this possible!?).
And the easiest way would be to just change the PHY..

I have seen you guys are really into it and I already got
some really good help from you for my diploma work last
week, so here I am again with this question!

Did anybody hear about such an PHY?

Thanks a lot again,

Christian
university of applied technology cologne
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