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.