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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
