SAA7121 Overview
SAA7121 encodes digital YUV video data to an NTSC or PAL CVBS or S-Video signal. The circuit accepts CCIR patible YUV data with 720 active pixels per line in 4 : 2 multiplexed formats, for example MPEG decoded data.
SAA7121 Key Features
- Monolithic CMOS 3.3 V (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 (CCIR 656), SAV and EAV
- Three 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 WST- and NABTS-Teletext encoding including sequencer and filter
- Line 23 wide screen signalling encoding
- Fast I2C-bus control port (400 kHz)