SAA5700GP中文資料飛利浦?jǐn)?shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

The SAA5700 is a Chinese teletext decoder suitable for TV and multimedia applications. It incorporates all the data slicing, acquisition and display circuitry on-chip, as well as the logic for memory management. An external DRAM is used to store the currently displayed page and also the precaptured teletext pages.

FEATURES

? Acquisition and display of the 625-line PAL CCST Chinese standard for teletext, with Chinese and Latin character sets

? Supports multiple DRAM sizes: 256K × 4 bits, 1M × 4 bits, 4M × 4 bits and 2 × 1M × 4 bits with an additional decoder/demultiplexer IC

? Acquires and stores in background up to (typically) 400 pages with 1M × 4 bits external DRAM

? CCST Fastext, with capability of displaying Chinese characters on Fastext prompt row

? Meshing for reduced contrast video background in subtitles and boxes

? Full line and screen colour to all edges of screen

? Supports 625-line 50/100 Hz display modes

? Scan-locked and stand-alone sync modes; supports video-locked sync modes with external PLL

? Easy control via high level I2C-bus SAFARI commands

? Sync mode switching and picture centring via I2C-bus SAFARI commands

? Supports external decryption unit for encrypted data.