mdio (4)

Leading comments

Written by Landon Fuller for the FreeBSD Project.
Based on the miibus(4) manual page written by Tom Rhodes.
Please see the /usr/src/COPYRIGHT file for copyright information.

$FreeBSD: releng/11.0/share/man/man4/mdio.4 301589 2016-06-08 08:50:35Z trasz $

(The comments found at the beginning of the groff file "man4/mdio.4freebsd".)

NAME

mdio - IEEE 802.3 Management Data Input/Output interface

SYNOPSIS

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

device mdio

DESCRIPTION

The driver provides an interconnection between the Media Access Control (MAC) sublayer and Physical Layer (PHY) entities' control and status registers, as defined by the IEEE 802.3 Standard.

The layer allows device drivers to share common support code for various external PHY devices.

MDIO is one of two signal interfaces that comprise the Media Independent Interface (MII) defined by the IEEE 802.3 Standard. The miibus(4) driver provides support for devices that require full MII support.

SEE ALSO

miibus(4)

STANDARDS

More information on MDIO can be found in the IEEE 802.3 Standard.

HISTORY

The driver first appeared in Fx 10.0 .

AUTHORS

The driver was written by An Stefan Bethke Aq Mt stb@lassitu.de .