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GENERAL DESCRIPTION

The one chip front-end SAA7110; SAA7110A is a digital multistandard colour decoder (OCF1) on the basis of the DIG-TV2 system with two integrated Analog-to-Digital Converters (ADCs), a Clock Generation Circuit (CGC) and Brightness Contrast Saturation (BCS) control.

FEATURES

? Six analog inputs (6 × CVBS or 3 × Y/C or combinations)

? Three analog processing channels

? Three built-in analog anti-aliasing filters

? Analog signal adding of two channels

? Two 8-bit video CMOS analog-to-digital converters

? Fully programmable static gain for the main channels or automatic gain control for the selected CVBS/Y channel

? Selectable white peak control signal

? Luminance and chrominance signal processing for PAL B/G, NTSC M and SECAM

? Full range HUE control

? Automatic detection of 50/60 Hz field frequency, and automatic switching between standards PAL and NTSC, SECAM forceable

? Horizontal and vertical sync detection for all standards

? Cross-colour reduction by chrominance comb filtering for NTSC or special cross-colour cancellation for SECAM

? UV signal delay lines for PAL to correct chrominance phase errors

? The YUV-bus supports a data rate of: – 780 × fh = 12.2727 MHz for 60 Hz (NTSC) – 944 × fh = 14.75 MHz for 50 Hz (PAL/SECAM)

? Square pixel format with 768/640 active samples per line on the YUV-bus

? CCIR 601 level compatible

? 4 : 2 : 2 and 4 : 1 : 1 YUV output formats in 8-bit resolution

? User programmable luminance peaking for aperture correction

? Compatible with memory-based features (line-locked clock, square pixel)

? Requires only one crystal (26.8 MHz) for all standards

? Real time status information output (RTCO)

? Brightness Contrast Saturation (BCS) control for the YUV-bus

? Negation of picture possible

? One user programmable general purpose switch on an output pin

? Switchable between on-chip Clock Generation Circuit (CGC) and external CGC (SAA7197)

? Power-on control

? I2C-bus controlled.

APPLICATIONS

? Desktop video

? Multimedia

? Digital television

? Image processing

? Video phone

? Video picture grabbing.