Introduction
The Video Pixel Decoder (VPX) is a full-feature video acquisition IC for consumer video and multimedia applications. All of the processing necessary to convert an analog video signal into a digital component stream has been integrated onto a single 44-pin IC. Its notable features include:

– single chip multistandard color decoding NTSC/PAL/SECAM/S-VHS,
   NTSC with chroma comb filter.
– 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 YC sources (SVHS), or
   2 composite video sources and one YC source.
– automatic standard detection
– horizontal and vertical sync detection for all standards
– hue, brightness, contrast, and saturation control
– horizontal resizing between 32 and 1056 pixel/line
– vertical resizing by line dropping
– high quality anti-aliasing filter (VPX 3220 A only)
– ITU-R601 level compatible
– YCbCr (4:4:4, 4:2:2, or 4:1:1) or
   γ-corrected RGB 4:4:4 (15, 16, or 24 bits)
   compressed Video (DPCM 8 bit)
   (VPX 3214 C supports only YCrCb 4:2:2)
– alpha key generation
   (only VPX 3220 A, and VPX 3216 B)
– 8-bit or 16-bit synchronous output mode
– asynchronous output mode via FIFO with status flags
– VBI bypass mode for Teletext, Closed Caption, and Intercast
– 44-pin plastic package (PLCC, TQFP)
– total power consumption under 1 W
– I2C serial control, selectable power-up default state
– on-chip clock generation
– IEEE 1149.1 (JTAG) boundary scan interface
   VPX 3220 A, VPX 3216 B, and VPX 3214 C are pin and
   software compatible, but differ slightly in the feature set.