DTVIIC(4)

DTVIIC(4) | Kernel Interfaces Manual | 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

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

August 30, 2011 | NetBSD 7.0