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:
- 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
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⟩.