AUE(4)                    OpenBSD Programmer's Manual                   AUE(4)

NAME
     aue - ADMtek AN986 Pegasus USB Ethernet driver

SYNOPSIS
     aue*   at uhub?
     ukphy* at mii?

DESCRIPTION
     The aue driver provides support for USB Ethernet adapters based on the
     ADMtek AN986 Pegasus chipset.  This includes the following adapters:

           Billionton Systems USB100
           Corega FEther USB-TX
           D-Link DSB-650TX
           I/O Data USB ETTX
           LinkSys USB100TX, USB100H1 and USB10TA
           Melco Inc. LUA-TX
           SOHOware NUB100
           SMC 2202USB
           Kingston KNU101TX

     The Pegasus contains a 10/100 Ethernet MAC with MII interface and is de-
     signed to work with both Ethernet and HomePNA transceivers.  Although de-
     signed 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               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 im-
                           plies 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), netintro(4), usb(4), ifconfig(8)

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

HISTORY
     The aue device driver first appeared in FreeBSD 4.0. OpenBSD support was
     added in OpenBSD 2.7.

AUTHORS
     The aue driver was written by Bill Paul <wpaul@ee.columbia.edu> and port-
     ed to OpenBSD by Aaron Campbell <aaron@openbsd.org>.

OpenBSD 3.0                    December 25, 1999                             2
