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.