GENERAL DESCRIPTION

The SAA7199B encodes digital baseband colour/video data into analog Y, C and CVBS signals (S-video included). Pixel clock and data are line-locked to the horizontal scanning frequency of the video signal. The circuit can be used in a square pixel or in a consumer TV application. Flexibility is provided by programming facilities via MPU-bus (parallel) or I2C-bus (serial).

FEATURES

• Monolithic integrated CMOS video encoder circuit

• Standard MPU (12 lines) and I2C-bus interfaces for controls

• Three 8-bit signal inputs PD7 to PD0 for RGB respectively YUV or indexed colour signals (Tables 19 to 26)

• Square pixel and CCIR input data rates

• Band limited composite sync pulses

• Three 256 × 8 colour look-up tables (CLUTs) for example for gamma correction

• External subcarrier from a digital decoder (SAA7151B or SAA7191B)

• Multi-purpose key for real time format switching

• Autonomous internal blanking

• Optional GENLOCK operation with adjustable horizontal sync timing and adjustable subcarrier phase

• Stable GENLOCK operation in VCR standard playback mode

• Optional still video capture extension

• Three suitable video 9-bit digital-to-analog converters

• Composite analog output signals CVBS, Y and C for PAL/NTSC

• Line 21 data insertion possible.