.\"
.\" Copyright (c) 2011 Rick van der Zwet <info@rickvanderzwet.nl>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.\" $FreeBSD$
.\"
.Dd February 14, 2011
.Dt MOS 4
.Os
.Sh NAME
.Nm mos
.Nd Moschip MCS7730/MCS7840 USB Ethernet driver
.Sh SYNOPSIS
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
.Cd "device uhci"
.Cd "device ohci"
.Cd "device usb"
.Cd "device miibus"
.Cd "device mos"
.Ed
.Pp
Alternatively, to load the driver as a
module at boot time, place the following line in
.Xr loader.conf 5 :
.Bd -literal -offset indent
if_mos_load="YES"
.Ed
.Sh DESCRIPTION
The
.Nm
driver provides support for USB Ethernet adapters based on the 
Moschip MCS7730/MCS7830 chipset.
.Pp
The adapters that contain the Moschip MCS7730/MCS7830 chipset
will operate at 100Base-TX and full-duplex.
.Pp
The Moschip 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, this only works with USB 2.0. The existing USB 1.0
standard specifies a maximum transfer speed of 12Mbps.
USB 1.0 Users should therefore not expect to actually achieve 100Mbps speeds
with these devices.
.Pp
The Moschip 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.
.Pp
For more information on configuring this device, see
.Xr ifconfig 8 .
.Sh HARDWARE
Adapters supported by the
.Nm
driver include:
.Pp
.Bl -bullet -compact
.It
Sitecom LN030
.Sh SEE ALSO
.Xr altq 4 ,
.Xr arp 4 ,
.Xr miibus 4 ,
.Xr netintro 4 ,
.Xr ng_ether 4 ,
.Xr ifconfig 8
.Rs
.%T ADMtek AN986 data sheet
.%O http://www.moschip.com/data/products/MCS7830/Data%20Sheet_7830.pdf
.Re
.Sh HISTORY
The
.Nm
device driver first appeared in
.Fx 8.2 .
.Sh AUTHORS
The
.Nm
driver was written by
.An Rick van der Zwet info@rickvanderzwet.nl .