DESCRIPTION

The SAA5246A is a single-chip teletext decoder IC for decoding 625 line base World System Teletext transmissions. The teletext decoder hardware is based on the Enhanced Computer Controlled ECCT device (SAA5243) with some additional features.

FEATURES

? Complete Teletext decoder in a 48-pin DIL or 64-pin QFP, integrated circuit

? Single+5 V power supply

? Both video and scan related synchronization modes are supported

? RGB interface to standard colour decoder ICs, push-pull output drive

? Digital data slicer and display clock phase-locked loop reduce peripheral components to a minimum

? Data capture performance similar to SAA5231 (VIP2)

? Option for up to seven national languages

? Optional storage of packet 24 in the display memory

? Separate text and video signal quality detectors, 625/525 video status and language version all readable via I2C-bus