The Sony CXA2161R 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 (peritelevision) 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