GENERAL DESCRIPTION

The SAA4978H is a monolithic integrated circuit suitable either for 1fHor 2fHapplications that contain a large variety of picture improvement functions. It combines analog-to-digital and digital-to-analog conversion for YUV signals, digital processing, line-locked clock regeneration and an 80C51 microcontroller core in one IC.

FEATURES

? Clamp

? Analog AGC

? Triple YUV 9-bit Analog-to-Digital Converter (ADC)

? Triple bypassable analog anti-alias filter

? 4 MHz notch filter

? Non-linear phase filter after ADC

? 4:1:1 or 4:2:2 digital processing

? 4:1:1 or 4:2:2 selectable I/O interface

? Asynchronous digital input

? Time base correction

? Histogram analysis

? Histogram modification

? Subtitle detection

? Black bar detection

? Line memory based noise reduction (spatial)

? Noise level measurement

? Clamp noise reduction

? Dynamic peaking

? Energy measurement

? Multi Picture-In-Picture (multi PIP) decimation

? Differential Pulse Code Modulation (DPCM) data decompression for colour

? 2D-peaking and coring

? Non-linear phase filter before DAC

? Coaxial Transceiver Interface (CTI)

? Triple 10-bit Digital-to-Analog Converter (DAC)

? Triple bypassable analog reconstruction filter

? Embedded microcontroller (80C51 core)

? Programmable signal positioner

? SNERT interface

? I2C-bus user control interface

? Boundary Scan Test (BST).