This product adopts the audio and video distribution processing
chip NX9262, which routes a set of audio and video signals to a set
of audio and video outputs through the core processor through the
I2C digital interface and the high-performance control processor
NX6316. Its typical applications include satellite set-top boxes,
high-definition televisions (HDTVs), personal video recorders
(PVRs), A/V switches, security devices, media centers, and in car
entertainment systems, routing multiple devices to a single audio
and video device.
The NX9262 audio and video allocation processing chip provides a
set of audio and video inputs, which are routed to three sets of
audio and video outputs through the core processor. Input to output
routing is controlled through an I2C compatible digital interface.
Each input supports an integrated clamping option to set the output
to synchronize the video's tip level to 300mV.Alternatively, the
input can be internally biased to the center signal without
synchronization of approximately 1.25V(chromaticity, Pb, Pr). These
DC output levels are used for 6dB gain setting. A higher gain
setting will increase the corresponding level of DC output. Select
input clamping/bias mode via I2C. Unused outputs may lose power to
reduce power consumption
Features
◆ Audio and video distribution processor
◆ Supports SD (standard definition), PS (progressive scanning), and
HD (high definition) 1080i/1080p videos
◆ Input clamping and bias circuit
◆ AC coupling or DC coupling input
◆ AC coupling or DC coupling output
◆ Dual load (75 Ω) and high impedance disabled output driver
◆ Four video channels, four left and right channel input-output
switches
◆ Programmable gain:+6,+7,+8, or+9dB
◆ I2C compatible digital interface, standard mode
◆ 5V single power supply operation
