Beko 26" HD READY Service Manual page 16

VPX3226F
The Video Pixel Decoder VPX 322xF is the fourth generation of full-feature video
acquisition IC for consumer video and Multimedia applications. All of the processing
units necessary to convert an analog video signal into a digital component stream
have been integrated onto a single 44- or 64-pin IC. Additionally, the VPX 322xF
provides text slicing for Intercast, Teletext, and Closed Caption. An adaptive 4H
comb filter allows improved Y/C separation. In addition to the VPX 3226F, the VPX
3228F provides an analog component video interface.
Video Decoding
•
High-performance adaptive 4H comb filter Y/C
separator with adjustable vertical peaking
•
Multistandard color decoding:
– NTSC-M, NTSC-443
– PAL-BDGHI, PAL-M, PAL-N, PAL-60
– SECAM, S-VHS
•
Video ADCs with clamping and automatic gain control
(AGC)
•
Seven analog inputs with integrated selector for the
following sources:
– 4×composite video (CVBS), or
– 2×CVBS and 2×Y/C (S-VHS), or
– 2×CVBS, 1×Y/C and 1×YPrPb
(Some inputs are available only in the 64-pin version.)
•
Decoding and detection of Macrovision 7.01 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
Video Interfacing
•
Digital YCrCb 4:2:2 format
Block diagram of the VPX 3226
15
(VIDEO PIXEL DECODER)
•
ITU-R 601/656 compliant output format
•
Square pixel format (640/768 pixels/line)
•
8-bit or 16-bit synchronous output mode
•
13.5 MHz/16-bit and 27 MHz/8-bit output rate
•
VBI bypass and raw ADC data output
Data Broadcast Support
•
High-performance hardware data slicing
•
Multistandard data slicer
– NABTS, WST
•
CAPTION (1×, 2×), CGMS, VPS, WSS, Antiope
•
Full support for
– Teletext, Intercast
– WebTV for Windows, EPG services
•
Programmable to new standards via I2C
•
VBI and Full-field mode
•
Data insertion into video stream
•
Simultaneous acquisition of Teletext, VPS, WSS, and
Caption
•
44-pin PMQFP and 64-pin PMQFP/ PQFN packages
•
Reduced power consumption of about 500 mW
•
I2C serial control, two different device addresses
•
On-chip clock generation, single crystal
•
Eight user-programmable I/O pin
s