NAME
dtviic, au8522,
cx24227, lg3303,
mt2131, nxt2k,
zl10353, tvpll,
xc3028, xc5k —
Inter IC (I2C) modules for
DTV
DESCRIPTION
Thedtviic 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:
- Initialize transport stream (
TS) port on the host controller. - 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. - Configure the tuner. Typically this step includes at least setting the frequency.
- Start TS transfer (using
DMAtransfers orUSBhigh 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
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⟩.