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.