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BT819A Datasheet, PDF (1/110 Pages) List of Unclassifed Manufacturers – VideoStream Decoders | |||
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Bt819A/817A/815A
VideoStream⢠Decoders
Bt819A â Video Capture Processor for
TV/VCR Analog Input
Bt817A â Composite Video and S-Video Decoder
Bt815A â Composite Video Decoder
The Bt819A, Bt817A and Bt815A VideoStream Decoders are a family of single-
chip, pin and register compatible, composite NTSC/PAL video and S-video
decoders. Low operating power consumption and power down capability make
them ideal low-cost solutions for PC video capture applications on both desktop
and portable system platforms. They support square pixel and CCIR601 resolu-
tions for both NTSC and PAL. They have a ï¬exible pixel port which supports a
variety of system interface conï¬gurations, and they are offered in both a 100-pin
PQFP and 100-pin TQFP.
Functional Block Diagram
MUX0
MUX1
MUX2
MUXOUT
SYNCDET
REFOUT
YREF+
YIN
YREFâ
CREF+
CIN
CREFâ
ANALOG
MUX
AGC
40 MHZ
ADC
40 MHZ
ADC
XT0 XT1
ULTRALOCKTM
AND
CLOCK
GENERATION
LUMA-CHROMA
SEPARATION
AND
CHROMA
DEMODULATION
I2C JTAG
VIDEO
TIMING
UNIT
SPATIAL AND
TEMPORAL
SCALING
VIDEO
TIMING
OUTPUT
CONTROL
16
OUTPUT
DATA
Distinguishing Features
⢠Single-Chip Composite/S-Video
NTSC/PAL to YCrCb Digitizer
⢠On-Chip UltralockTM
⢠Square Pixel and CCIR601 Resolu-
tion for NTSC and PAL
⢠Chroma Comb Filtering
⢠Arbitrary Horizontal Scaling and
Vertical Scaling (using line store)
⢠Arbitrary Temporal Decimation
for a Reduced Frame-Rate Video
Sequence
⢠Programmable Hue, Brightness,
Saturation, and Contrast
⢠User-Programmable Cropping of
the Video Window
⢠2x Oversampling to Simplify
External Analog Filtering
⢠Two-Wire I2C Bus Interface
⢠On-Chip 40-Pixel-Deep
Asynchronous Output FIFO
⢠8- or 16-Bit Pixel Interface
⢠YCrCb (4:2:2) Output Format
⢠Software Selectable Three-Input
Analog Mux
⢠Auto NTSC/PAL Format Detect
⢠Automatic Gain Control
⢠IEEE 1149.1 (JTAG) Interface
⢠100-Pin PQFP and TQFP Packages
Related Products
⢠Bt812, Bt858, Bt855,
Bt856, Bt857
⢠Bt851
Applications
⢠Multimedia
⢠Image Processing
⢠Desktop Video
⢠Video Phone
⢠Teleconferencing
⢠Interactive Video
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