GENERAL DESCRIPTION

The SAA7187 encodes digital YUV video data to an NTSC, PAL CVBS or S-Video signal. The circuit accepts differently formatted YUV data with 640 or 768 active pixels per line. It includes a sync/clock

generator and on-chip Digital-to-Analog Converters (DACs).

FEATURES

? CMOS 5 V device

? Digital PAL/NTSC encoder

? System pixel frequency selectable for 12.27 MHz (60 Hz fields) or 14.75 MHz (50 Hz fields)

? 24-bit wide YUV input port or

? 16-bit wide YUV input port or

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

? I2C-bus control port

? 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

? Line 21 Closed Caption encoder

? Cross-colour reduction

? DACs operating at twice oversampling 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.