159 lines
4.0 KiB
Groff
159 lines
4.0 KiB
Groff
.\" $NetBSD: dtviic.4,v 1.5 2011/08/31 07:04:49 jruoho Exp $
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.\"
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.\" Copyright (c) 2011 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Thomas Klausner.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd August 30, 2011
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.Dt DTVIIC 4
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.Os
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.Sh NAME
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.Nm dtviic ,
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.Nm au8522 ,
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.Nm cx24227 ,
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.Nm lg3303 ,
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.Nm mt2131 ,
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.Nm nxt2k ,
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.Nm zl10353 ,
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.Nm tvpll ,
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.Nm xc3028 ,
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.Nm xc5k
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.Nd Inter IC (I2C) modules for DTV
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.Sh DESCRIPTION
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The
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.Nm
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modules provide support for
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.Xr dtv 4
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devices.
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The
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.Nm
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module group includes tuners, demodulators, and analog video decoders.
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.Pp
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The usual hardware structure consists of a host controller
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(connected for instance via
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.Xr usb 4
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or
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.Xr pci 4 )
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that provides the data moving facilities (for the analog or
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digital video streams) and an
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.Xr iic 4
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bus over which the other chips can be configured.
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.Pp
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For example, a typical
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.Xr dtv 4
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setup would look like this:
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.Bl -enum -offset indent
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.It
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Initialize transport stream
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.Pq Dv TS
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port on the host controller.
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.It
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Configure the demodulator that
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.Dq demodulates
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the information from an intermediate frequency
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.Pq Dv IF
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that is provided to it by the associated tuner.
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This step typically includes setting the desired
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quadrature amplitude modulation
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.Pq Dv QAM
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and bandwidth, among other things.
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.It
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Configure the tuner.
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Typically this step includes at least setting the frequency.
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.It
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Start TS transfer (using
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.Dv DMA
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transfers or
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.Dv USB
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high speed transfers).
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.El
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.Pp
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The supported demodulators include:
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.Bl -tag -width 10n -offset indent
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.It Nm au8522
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Auvitek AU8522 ATSC/QAM64/QAM256 demodulator
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.It Nm cx24227
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Conexant CX24227 ATSC/QAM64/QAM256 demodulator
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.It Nm lg3303
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LG LGDT3303 ATSC/QAM64/QAM256 demodulator
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.It Nm mt2131
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MicroTune MT2131 ATSC demodulator
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.It Nm nxt2k
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NxtWave Communications NXT2004 ATSC demodulator
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.It Nm zl10353
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Zarlink ZL10353 (Intel CE623x) COFDM/DVB-T demodulator
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.El
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.Pp
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The supported tuners are:
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.Bl -tag -width 10n -offset indent
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.It Ic tvpll
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Generic PLL-based tuners
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.It Nm xc3028
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XCeive XC3028 analog and digital tuner
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.It Nm xc5k
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Xceive XC5000 analog and digital tuner
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.El
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.Sh FILES
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.Bl -bullet -offset indent
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.It
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.Pa dvb-fe-nxt2004.fw
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needed by
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.Nm nxt2k
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.It
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.Pa xc3028-v27.fw
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or
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.Pa xc3028L-v36.fw
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(provided by
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.Pa pkgsrc/sysutils/xc3028l-firmware )
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needed by
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.Nm xc3028
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.It
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.Pa dvb-fe-xc5000-1.6.114.fw
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needed by
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.Nm xc5k ,
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provided by the
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.Pa pkgsrc/sysutils/xc5k-firmware
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.El
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.Sh SEE ALSO
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.Xr dtv 4 ,
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.Xr iic 4 ,
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.Xr module 7
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.Sh HISTORY
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The
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.Nm
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modules first appeared in
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.Nx 6.0 .
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.Sh AUTHORS
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.An -nosplit
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Authors include
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.An Jared D. McNeill
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.Aq jmcneill@NetBSD.org ,
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.An Jonathan A. Kollasch
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.Aq jakllsch@NetBSD.org ,
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and
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.An Jukka Ruohonen
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.Aq jruohonen@iki.fi .
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