GENERAL DESCRIPTION

The SAA7185 encodes digital YUV video data to an NTSC, PAL CVBS or S-Video signal.

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

The circuit is compatible to the DIG-TV2 chip family.

FEATURES

? CMOS 5 V device

? Digital PAL/NTSC encoder

? System pixel frequency 13.5 MHz

? Accepts MPEG decoded data

? 8-bit wide MPEG port

? Input data format Cb, Y, Cr etc. (CCIR 656)

? 16-bit wide YUV input port

? I2C-bus control or alternatively MPU parallel control port

? Encoder can be master or slave

? Programmable horizontal and vertical input synchronization phase

? Programmable horizontal sync output phase

? OSD overlay with Look-Up Tables (LUTs) 8 × 3 bytes

? Colour bar generator

? Line 21 Closed Caption encoder

? Cross-colour reduction

? DACs operating at 27 MHz with 10-bit resolution

? Controlled rise/fall times of output syncs and blanking

? Down-mode of DACs

? CVBS and S-Video output simultaneously

? PLCC68 package.