1 .\" $NetBSD: sf2r.4,v 1.4 2002/01/02 02:08:02 augustss Exp $
2 .\" $RuOBSD: sf2r.4,v 1.3 2001/10/26 05:38:44 form Exp $
3 .\" $OpenBSD: sf2r.4,v 1.2 2001/12/05 11:27:44 mickey Exp $
5 .\" Copyright (c) 2001 Vladimir Popov
6 .\" All rights reserved.
8 .\" Redistribution and use in source and binary forms, with or without
9 .\" modification, are permitted provided that the following conditions
11 .\" 1. Redistributions of source code must retain the above copyright
12 .\" notice, this list of conditions and the following disclaimer.
13 .\" 2. Redistributions in binary form must reproduce the above copyright
14 .\" notice, this list of conditions and the following disclaimer in the
15 .\" documentation and/or other materials provided with the distribution.
17 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 .\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 .\" USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24 .\" ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 .Nd SoundForte RadioLink SF16-FMR2 FM radio device driver
35 .Cd option RADIO_TEA5759
37 .Cd "sf2r0 at isa? port 0x384"
42 driver provides support for the SF16-FMR2 FM radio tuners.
44 The SF16-FMR2 is a stereo FM tuner that allows to tune in the range
45 87.5 - 108.0 MHz, report signal status on the current frequency, force
46 audio output to mono, perform hardware signal search, and has an internal
49 The SF16-FMR2 cards take only one I/O port.
50 The I/O port is set by the driver to the value specified in the configuration
51 file and must be 0x384.
53 Philips Semiconductors released two almost identical chips TEA5757 and
55 The TEA5757 is used in FM-standards in which the local oscillator frequency
56 is above the radio frequency (e.g. European and American standards).
57 The TEA5759 is the version in which the oscillator frequency is below
58 the radio frequency (e.g. Japanese standards).
61 changes the algorithm of frequency calculation for the TEA5757 based cards
62 to conform with the Japanese standards.
69 device driver appeared in
76 driver was written by Vladimir Popov and Maxim Tsyplakov.
77 The man page was written by Vladimir Popov.
79 MediaForte made two variants of the SF16-FMR2 cards, the first one has
80 an internal amplifier of the output sound, the second one does not have
82 The current driver supports only the second variant.