Introduction

The Video Pixel Decoders VPX 322xE are the third generation of full feature video acquisition ICs for consumer video and multimedia applications. All of the processing necessary to convert an analog video signal into a digital component stream have been integrated onto a single 44-pin IC. Moreover, the VPX 3225E and VPX 3226E provide text slicing for intercast, teletext, and closed caption. For improved Y/C separation, the VPX 3226E includes an adaptive 4H comb filter. All chips are pin compatible to VPX 3220A, VPX 3214C, and VPX 322xD. Their notable features include:

Video Decoding

– high-performance adaptive 4H comb filter Y/C separator

with adjustable vertical peaking (VPX 3226E only)

– multistandard color decoding:

? NTSC-M, NTSC-443

? PAL-BDGHI, PAL-M, PAL-N, PAL-60

? SECAM

? S-VHS

– two 8-bit video A/D converters with clamping and automatic gain control (AGC)

– four analog inputs with integrated selector for:

? 3 composite video sources (CVBS), or

? 2 Y/C sources (S-VHS), or

? 2 composite video sources and one Y/C source.

– horizontal and vertical sync detection for all standards

– decodes and detects Macrovision 7.1 protected video

Video Processing

– hue, brightness, contrast, and saturation control

– dual window cropping and scaling

– horizontal resizing between 32 and 864 pixels/line

– vertical resizing by line dropping

– high-quality anti-aliasing filter

– scaling controlled peaking and coring