Description

The Sony CXA7002R is an Audio/Video switch designed primarily for application in Digital Set Top Boxes. It provides video and audio routing from the digital encoder source to the TV and VCR scart (peri-television) connectors. In addition, the TV audio output has a programmable volume control. The chip is programmed by means of an I2C interface and can operate from a single or dual power supply.

Target specifications:Canal+, BSkyB, TPS, NorDig, and ECCA Euro-Box

Features

Supply

• Single: 0V, +5V, +12V

• Dual: 0V, –5V, +5V and +12V

(Low number of external parts required)

Video

• 2 scart switching (VCR, TV)

• VCR input supports RGB mode

• Integrated 75Ωdrivers for direct video connection

• Y/C mixer with trap for RF modulators

• Switchable clamps on inputs

• Low pass filters on six inputs

• Controllable gain on encoder inputs

• Adjustable gain on RGB outputs

• Video output shutdown for low power modes

• Fast blanking switch

• Slow blanking switch for TV and VCR output

• SVHS switch on VCR output

• Y/C auxiliary input

Audio

• Four stereo audio inputs

• Volume control (–56dB to +6dB in 2dB steps)

• Additional +6dB gain on audio DAC inputs

• Audio overlay facility

• Volume bypass for TV and Phono outputs

• Mono switching on TV, VCR outputs

• Switchable audio limiter function

• Switchable Mono output for RF modulators

• Audio output disable for standby mode

Applications

• Digital Set Top Box

• Integrated digital television