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Date:      Tue, 06 Jan 1998 10:12:19 +0000
From:      Peter Edwards <peter.edwards@penrose.isocor.ie>
To:        Brian Handy <handy@sag.space.lockheed.com>
Cc:        Chris Timmons <skynyrd@opus.cts.cwu.edu>, freebsd-hackers@FreeBSD.ORG
Subject:   Re: mii device
Message-ID:  <34B20383.222E6797@penrose.isocor.ie>
References:  <Pine.OSF.3.96.980105162504.31627I-100000@sag.space.lockheed.com>

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Hi,

>mii - media independent interface.  does your card have an MII port, too?

Some cards (many of the DEC 2114[023] devices and the Intel Pro100/B at
least) have an on-board MII-compliant PHY device that controls the
physical layer interface (ie, its what is wired to the TP connection on
the board). It'll do things like auto-detect the network speed and
duplex mode. 
	There IS a standard MII connector. The idea behind this (as far as I
understand) is given a particular NIC, you can plug a different MII PHY
into it, and use the card with a different medium. Eg, get a Fibre,
10-BaseT, 100-BaseTX, or 100-BaseT4 PHY, and plug in to the wire.
Hope that helps.
--
Peter.



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