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-.\" Copyright (c) 1998, Nicolas Souchu
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"
-.Dd August 6, 1998
-.Dt PCF 4
-.Os FreeBSD
-.Sh NAME
-.Nm pcf
-.Nd
-Philips I2C bus controller
-.Sh SYNOPSIS
-.Cd "controller pcf0 at isa? port? irq 5"
-.Pp
-For one or more iicbus busses:
-.Cd "controller iicbus0"
-.Sh DESCRIPTION
-The
-.Em pcf
-driver provides support to the Philips PCF8584 I2C controller for the
-.Xr iicbus 4
-system.
-.Pp
-The PCF8584 is an integrated circuit designed in CMOS technology which serves
-as an interface between most standard parallel-bus 
-microcontrollers/microprocessors and the serial I2C-bus. The PCF8584 
-provides both master and slave functions. Communication with I2C-bus is
-carried out on a byte-wise basis using interrupt or polled handshake. It
-controls all the I2C-bus specific sequences, protocol, arbitration and timing.
-The PCF8584 allows parallel-bus systems to communicate bidirectionally with
-the I2C-bus.
-.Pp
-.Sh SEE ALSO
-.Xr iicbus 4
-.Sh HISTORY
-The
-.Nm
-manual page first appeared in
-.Fx 3.0 .
-.Sh AUTHOR
-This
-manual page was written by
-.An Nicolas Souchu .