GENERAL DESCRIPTION

The SAA7120H; SAA7121H encodes digital YUV video data to an NTSC or PAL CVBS or S-video signal.

The circuit accepts CCIR compatible YUV data with 720 active pixels per line in 4:2:2multiplexed formats, for example MPEG decoded data. It includes a sync/clock generator and on-chip DACs.

FEATURES

• Monolithic CMOS 3.3 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(CCIR 656)

• Three Digital-to-Analog Converters (DACs) for Y, C and CVBS two times oversampled with 10-bit resolution

• Real-time control of subcarrier

• Cross-colour reduction filter

• Closed captioning encoding and World Standard

Teletext (WST) and North-American Broadcast Text System (NABTS) teletext encoding including sequencerand filter

• Line 23 Wide Screen Signalling (WSS) encoding

• Fast I2C-bus control port (400 kHz)

• Encoder can be master or slave

• Programmable horizontal and vertical input synchronization phase

• Programmable horizontal sync output phase

• Internal Colour Bar Generator (CBG)

• 2×2 bytes in lines 20 (NTSC) for copy guard management system can be loaded via I2C-bus

• Down mode of DACs