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AUE(4)			 BSD Kernel Interfaces Manual			AUE(4)

NAME
     aue — ADMtek AN986 Pegasus USB Ethernet driver

SYNOPSIS
     device uhci
     device ohci
     device usb
     device miibus
     device aue

DESCRIPTION
     The aue driver provides support for USB ethernet adapters based on the
     ADMtek AN986 Pegasus chipset, including the LinkSys USB100TX, the Bil‐
     lionton Systems USB100, the Melco Inc. LU-ATX, the D-Link DSB-650TX, the
     SMC 2202USB, and those LinkSys USB10T adapters that contain the AN986
     Pegasus chipset.  The LinkSys USB10T adapters that contain the AN986
     Pegasus chipset will operate at 100Base-TX and full-duplex.

     The Pegasus contains a 10/100 ethernet MAC with MII interface and is
     designed to work with both ethernet and HomePNA transceivers.  Although
     designed to interface with 100Mbps peripherals, the existing USB standard
     specifies a maximum transfer speed of 12Mbps.  Users should therefore not
     expect to actually achieve 100Mbps speeds with these devices.

     The Pegasus supports a 64-bit multicast hash table, single perfect filter
     entry for the station address and promiscuous mode.  Packets are received
     and transmitted over separate USB bulk transfer endpoints.

     The aue driver supports the following media types:

     autoselect		   Enable autoselection of the media type and options.
			   The user can manually override the autoselected
			   mode by adding media options to the /etc/rc.conf
			   file.

     10baseT/UTP	   Set 10Mbps operation.  The mediaopt option can also
			   be used to enable full-duplex operation.  Not spec‐
			   ifying full duplex implies half-duplex mode.

     100baseTX		   Set 100Mbps (fast ethernet) operation.  The
			   mediaopt option can also be used to enable
			   full-duplex operation.  Not specifying full duplex
			   implies half-duplex mode.

     The aue driver supports the following media options:

     full-duplex	   Force full duplex operation.	 The interface will
			   operate in half duplex mode if this media option is
			   not specified.

     For more information on configuring this device, see ifconfig(8).

DIAGNOSTICS
     aue%d: watchdog timeout  A packet was queued for transmission and a
     transmit command was issued, however the device failed to acknowledge the
     transmission before a timeout expired.

     aue%d: no memory for rx list  The driver failed to allocate an mbuf for
     the receiver ring.

SEE ALSO
     arp(4), ifmedia(4), miibus(4), netintro(4), ng_ether(4), ifconfig(8)

     ADMtek AN986 data sheet, http://www.admtek.com.tw.

HISTORY
     The aue device driver first appeared in FreeBSD 4.0.

AUTHORS
     The aue driver was written by Bill Paul ⟨wpaul@ee.columbia.edu⟩.

BSD			       December 25, 1999			   BSD

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