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).