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CXA2078Q

I²C Bus-Compatible Audio/Video Switch with Electronic Volume

Sony Semiconductor 

CXA2078Q

I2C Bus-Compatible Audio/Video Switch with Electronic Volume

Description

The CXA2078Q is an I2C programmable audio,

video switch designed for set top box applications. It

interfaces from digital encoder sources to TV, VCR

and auxilliary scart connectors.

Features

• 3 scart independent audio/video switching (TV, VCR,

AUX)

• 0 to –63dB volume control with click noise reduction

• 5 stereo audio inputs

• I2C control with two address setting

• Scart Function Switching input and output

• Scart Fast Blanking for OSD

• RF modulator output with Y/C mix option

• On-chip +12V to +9V voltage regulator

• 4 logic outputs

Applications

Audio/Video switch featuring I2C bus compatibility

for set top box

Structure

Bipolar silicon monolithic IC

Absolute Maximum Ratings

• Supply voltage

VCC

12

V

• Operating temperature Topr –20 to +75 °C

• Storage temperature Tstg –65 to +150 °C

• Allowable power dissipation

PD

500

mW

Operating Conditions

• Supply voltage

• Operating voltage

+10.7 to +12 V

9 ± 0.5

V

64 pin QFP (Plastic)

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by

any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the

operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

–1–

E97843-PS

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