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dtv(4) [netbsd man page]

DTV(4)							   BSD Kernel Interfaces Manual 						    DTV(4)

dtv -- interface for digital television SYNOPSIS
dtv* at dtvbus? #include <dev/dtv/dtvio.h> #include <dev/dtv/dtvio_demux.h> #include <dev/dtv/dtvio_frontend.h> DESCRIPTION
The machine-independent dtv interface provides support for digital television (DTV). A subset of the Linux Digital Video Broadcasting (DVB) APIs is supported. In particular, dtv provides the DVB frontend and demodulator APIs. SUPPORTED DEVICES
The following machine-independent devices are supported: auvitek(4) Auvitek AU0828-based video capture cards emdtv(4) EM28XX-based DTV cards Note that the dtv device drivers are generally only available as kernel modules; see module(7) and modload(8) for additional details. Refer to dtviic(4) for details about the supported demodulators and tuners. FILES
/dev/dvb/adapterN/frontend0 The frontend device, for controlling the tuner and demodulator hardware. /dev/dvb/adapterN/demux0 The demux device, for controlling the hardware filters. /dev/dvb/adapterN/dvr0 Digital video recording device. SEE ALSO
auvitek(4), dtviic(4), emdtv(4), video(9) pkgsrc/multimedia/dvb-apps, pkgsrc/multimedia/mplayer Linux Media Infrastructure API. Part II. Linux DVB API,, 2011. HISTORY
The dtv interface first appeared in NetBSD 6.0. AUTHORS
Jared D. McNeill <> BSD
August 30, 2011 BSD

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DTVIIC(4)						   BSD Kernel Interfaces Manual 						 DTVIIC(4)

dtviic, au8522, cx24227, lg3303, mt2131, nxt2k, zl10353, tvpll, xc3028, xc5k -- Inter IC (I2C) modules for DTV DESCRIPTION
The dtviic modules provide support for dtv(4) devices. The dtviic module group includes tuners, demodulators, and analog video decoders. The usual hardware structure consists of a host controller (connected for instance via usb(4) or pci(4)) that provides the data moving facil- ities (for the analog or digital video streams) and an iic(4) bus over which the other chips can be configured. For example, a typical dtv(4) setup would look like this: 1. Initialize transport stream (TS) port on the host controller. 2. Configure the demodulator that ``demodulates'' the information from an intermediate frequency (IF) that is provided to it by the associated tuner. This step typically includes setting the desired quadrature amplitude modulation (QAM) and bandwidth, among other things. 3. Configure the tuner. Typically this step includes at least setting the frequency. 4. Start TS transfer (using DMA transfers or USB high speed transfers). The supported demodulators include: au8522 Auvitek AU8522 ATSC/QAM64/QAM256 demodulator cx24227 Conexant CX24227 ATSC/QAM64/QAM256 demodulator lg3303 LG LGDT3303 ATSC/QAM64/QAM256 demodulator mt2131 MicroTune MT2131 ATSC demodulator nxt2k NxtWave Communications NXT2004 ATSC demodulator zl10353 Zarlink ZL10353 (Intel CE623x) COFDM/DVB-T demodulator The supported tuners are: tvpll Generic PLL-based tuners xc3028 XCeive XC3028 analog and digital tuner xc5k Xceive XC5000 analog and digital tuner FILES
o dvb-fe-nxt2004.fw needed by nxt2k o xc3028-v27.fw or xc3028L-v36.fw (provided by pkgsrc/sysutils/xc3028l-firmware) needed by xc3028 o dvb-fe-xc5000-1.6.114.fw needed by xc5k, provided by the pkgsrc/sysutils/xc5k-firmware SEE ALSO
dtv(4), iic(4), module(7) HISTORY
The dtviic modules first appeared in NetBSD 6.0. AUTHORS
Authors include Jared D. McNeill <>, Jonathan A. Kollasch <>, and Jukka Ruohonen <>. BSD
August 30, 2011 BSD
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