SAA7118

GENERAL DESCRIPTION

The SAA7118 is a video capture device for applications at the image port of VGA controllers.
Philips X-VIP is a new multistandard comb filter video decoder chip with additional component processing, providing high quality, optionally scaled, video.
The SAA7118 is a combination of a four-channel analog preprocessing circuit including source selection, anti-aliasing filter and ADC with succeeding decimation filters from 27 to 13.5 MHz data rate. Each preprocessing channel comes with an automatic clamp and gain control. The SAA7118 combines a Clock Generation Circuit (CGC), a digital multistandard decoder containing two- dimensional chrominance/luminance separation by an adaptive comb filter and a high performance scaler, including variable horizontal and vertical up and downscaling and a brightness, contrast and saturation control circuit.

FEATURES

Video acquisition/clock
• Up to sixteen analog CVBS, split as desired (all of the
CVBS inputs optionally can be used to convert e.g.
Vestigial Side Band (VSB) signals)
• Up to eight analog Y + C inputs, split as desired
• Up to four analog component inputs, with embedded or
separate sync, split as desired
• Four on-chip anti-aliasing filters in front of the
Analog-to-Digital Converters (ADCs)
• Automatic Clamp Control (ACC) for CVBS, Y and C (or VSB) and component signals
• Switchable white peak control
• Four 9-bit low noise CMOS ADCs running at twice the
oversampling rate (27 MHz)
• Fully programmable static gain or Automatic Gain
Control (AGC), matching to the particular signal
properties
• On-chip line-locked clock generation in accordance with “ITU 601”
• Requires only one crystal (32.11 or 24.576 MHz) for all standards
• Horizontal and vertical sync detection. (Continue...)

APPLICATIONS

• PC-video capture and editing
• Personal video recorders (time shifting)
• Cable, terrestrial, and satellite set-top boxes
• Internet terminals
• Flat-panel monitors
• DVD-recordable players
• AV-ready hard-disk drivers
• Digital televisions/scan conversion
• Video surveillance/security
• Video editing/post production
• Video phones
• Video projectors
• Digital VCRs.