DTVIIC(4)

NAME
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 facilities (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

•   dvb-fe-nxt2004.fw needed by nxt2k

•   xc3028-v27.fw or xc3028L-v36.fw (provided by pkgsrc/sysutils/xc3028l-firmware) needed by xc3028

•   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
-nosplit Authors include Jared D. McNeill <jmcneill@NetBSD.org>, Jonathan A. Kollasch <jakllsch@NetBSD.org>, and Jukka Ruohonen <jruohonen@iki.fi>.