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AXE(4)			     Kernel Interfaces Manual			  AXE(4)

NAME
     axe -- ASIX Electronics AX88172/178/772 USB Ethernet driver

SYNOPSIS
     To compile this driver into the kernel, place the following lines in your
     kernel configuration file:

	   device ehci
	   device uhci
	   device ohci
	   device usb
	   device miibus
	   device axe

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

	   if_axe_load="YES"

DESCRIPTION
     The axe driver provides support for USB Ethernet adapters based on the ASIX
     Electronics AX88172, AX88178 and AX88772 USB 2.0 chipsets.

     The  AX88172 and AX88178 are USB 2.0 devices that contain a 10/100 Ethernet
     MAC with MII interface and are designed to  work  with  both  Ethernet  and
     HomePNA  transceivers.   The  AX88772 will additionally support 10/100/1000
     MACs.

     These devices will operate with both USB 1.x and USB 2.0 controllers,  how-
     ever  performance	with  1.x  controllers will be limited since the USB 1.x
     standard specifies a maximum transfer speed of 12Mbps.  Users with USB  1.x
     controllers  should therefore not expect to actually achieve 100Mbps speeds
     with these devices.

     All chipsets support a 64-bit multicast hash table, single  perfect  filter
     entry  for  the  station  address, all-multicast mode and promiscuous mode.
     Packets are received and transmitted over separate USB bulk  transfer  end-
     points.

     The axe 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 specifying full-duplex im-
		  plies half-duplex mode.

     100baseTX	  Set 100Mbps (Fast Ethernet) operation.   The	mediaopt  option
		  can  also be used to enable full-duplex operation.  Not speci-
		  fying full-duplex implies half-duplex mode.

     The axe 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).

HARDWARE
     The  axe driver supports ASIX Electronics AX88172/AX88178/AX88772 based USB
     Ethernet adapters including:

     AX88172:
     *	 AboCom UF200
     *	 Acer Communications EP1427X2
     *	 ATen UC210T
     *	 Billionton SnapPort
     *	 Billionton USB2AR
     *	 Buffalo (Melco Inc.) LUA-U2-KTX
     *	 Corega USB2_TX
     *	 D-Link DUBE100
     *	 Goodway GWUSB2E
     *	 JVC MP_PRX1
     *	 LinkSys USB200M
     *	 Netgear FA120
     *	 Sitecom LN-029
     *	 System TALKS Inc. SGC-X2UL

     AX88178:
     *	 Belkin F5D5055
     *	 Planex Communications GU1000T
     *	 Sitecom Europe LN-028

     AX88772:
     *	 Cisco-Linksys USB200Mv2
     *	 D-Link DUBE100B1

DIAGNOSTICS
     axe%d: watchdog timeout  A packet was queued for transmission and a  trans-
     mit command was issued, however the device failed to acknowledge the trans-
     mission before a timeout expired.

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

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

     ASIX AX88172 AX88178 and AX88772 data sheets, http://www.asix.com.tw.

HISTORY
     The axe device driver first appeared in FreeBSD 5.0.

AUTHORS
     The axe driver was written by Bill Paul <wpaul@windriver.com>.

FreeBSD 8.1			January 20, 2008			  AXE(4)
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