GENERAL DESCRIPTION

The SAA7151B is a digital multistandard colour-decoder having two 8-bit input channels, one for CVBS or Y, the other for chrominance or time-multiplexed colour-difference signals.

FEATURES

• 8-bit performance on chip for luminance and chrominance signal processing for PAL, NTSC and SECAM standards

• Separate 8-bit luminance and 8-bit chrominance input signals from Y/C, CVBS, S-Video (S-VHS or Hi8) sources

• SCART signal insertion by means of RGB/YUV convertion; fast switch handling

• Horizontal and vertical sync detection for all standards

• Real time control output RTCO

• Fast sync recovery of vertical blanking for VCR signals (bottom flutter compensation)

• Controls via the I2C-bus

• User programmable aperture correction (horizontal peaking)

• Cross-colour reduction by chrominance comb-filtering (NTSC) or by special cross-colour cancellation (SECAM)

• 8-bit quantization of output signals in 4:1:1 or 4:2:2 formats

• 720 active samples per line

• The YUV bus supports a data rate of 13.5 MHz (CCIR 601).

– (864 × fH) for 50 Hz

– (858 × fH) for 60 Hz

• Compatible with memory-based features (line-locked clock)

• One 24.576 MHz crystal oscillator for all standards