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STPHY(4)		    BSD Programmer's Manual		      STPHY(4)

NAME
     STPHY - Physical layer (PHY) driver on 3C905C ASIC

SYNOPSIS
     stphy* at eb? phy ?

DESCRIPTION
     The stphy driver supports the PHYceiver built into the 3C905C ASIC for
     10baseT and 100baseTX Ethernet. This device driver is called upon by net-
     work device drivers; no direct administrative control is provided.

     The ifconfig(8) command in conjunction with the device driver making us-
     ing of this drivers services provides an administrative interface that
     allows various physical level parameters (such as duplex, speed, and
     loopback) to be controlled.

     The 3C905C supports NWay automatic speed and duplex negotiation as well
     as automatic speed detection for hubs that do not support the NWay FLP
     protocol (both methods are defined by the IEEE 802.3u standard).

SEE ALSO
     ifconfig(8),  eb(4)

4th Berkeley Distribution	  Mar 6, 2001				     1

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