GENERAL DESCRIPTION

The SAA7124; SAA7125 encodes digital YUV video data to an NTSC or PAL CVBS plus RGB or alternatively to S-Video and CVBS output.

Optionally, the YUV to RGB dematrix can be by-passed providing the digital-to-analog converted Cb, Y, Cr signals instead of RGB.

FEATURES

? Monolithic CMOS 5 V device

? Digital PAL/NTSC encoder

? System pixel frequency 13.5 MHz

? Accepts MPEG decoded data on 8-bit wide input port. Input data format Cb, Y, Cr etc. “(CCIR 656)”

? Four DACs for CVBS (10-bit resolution), RGB (9-bit resolution) operating at 27 MHz; RGB sync on CVBS

? Optionally 2 times CVBS and Y, C (all 10-bit resolution) available simultaneously

? Closed captioning encoding

? On-chip YUV to RGB dematrix optionally to be by-passed for Cr, Y, Cb output on RGB DACs

? Fast I2C-bus control port (400 kHz)

? Encoder can be master or slave

? Programmable horizontal and vertical input synchronization phase, via input pins or auxiliary codes at MP data port

? Programmable horizontal sync output phase

? Internal 100/75 Colour Bar Generator (CBG)

? Macrovision Pay-per-View copy protection system as option, also partly used for RGB output.