SAA7183A Overview
SAA7183A encodes digital YUV video data to an NTSC, PAL, SECAM CVBS or S-Video signal and also RGB. Optionally, the YUV to RGB dematrix can be by-passed providing the digital-to-analog converted Cb, Y, Cr signals instead of RGB. The circuit accepts CCIR patible YUV data with 720 active pixels per line in 4.
SAA7183A Key Features
- Monolithic CMOS 3.3 V device with 5 V input stages
- Digital PAL/NTSC/SECAM 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) ” or Y and Cb, Cr on 16
- Three DACs for CVBS, Y and C operating at 27 MHz with 10 bit resolution
- Three DACs for RGB operating at 27 MHz with 9 bit resolution, RGB sync on CVBS and Y
- Analog multiplexing between internal RGB and external RGB on-chip
- CVBS, Y, C and RGB output simultaneously
- Closed captioning and teletext encoding including sequencer and filter
- Line 23 wide screen signalling encoding