The STV5348 decoder is a computer-controlled teletext device including an 8 page internal memory. Data slicing and capturing extracts the teletext information embedded in the composite video signal. Control is accomplished via a two wire serial I2C bus . Chip address is 22h. Internal ROM provides a character set suitable to display text using up to seven national languages. Hardware and software features allow selectable master/slave synchronization configurations. The STV5348 also supports facilities for reception and display of current level protocol data.