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BT829A Datasheet, PDF (1/136 Pages) List of Unclassifed Manufacturers – VideoStream DECODER | |||
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Advance Information
This document contains information on a product under development. The para-
metric information contains target parameters that are subject to change.
Bt829A/827A
VideoStream II Decoders
Bt829Aâ Video Capture Processor & Scaler for
TV/VCR Analog Input
Bt827Aâ Composite Video and S-Video Decoder
The Bt829A and Bt827A VideoStream⢠Decoders are a family of single-chip, pin-
and register-compatible, composite NTSC/PAL/SECAM video and S-Video decod-
ers. They are also pin and register backward compatible with the Bt829/827 family
of products. 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 resolutions for
NTSC, PAL and SECAM video. They have a ï¬exible pixel port which supports a
variety of system interface conï¬gurations, and they are offered in 100-pin PQFP and
100-pin TQFP packages.
Functional Block Diagram
MUX0
MUX1
MUX2
MUX3
MUXOUT
SYNCDET
REFOUT
YREF+
YIN
YREFâ
CREF+
CIN
CREFâ
Analog
MUX
AGC
40 MHz
ADC
40 MHz
ADC
XT0 XT1
Ultralockâ¢
and
Clock
Generation
I2C JTAG
Video
Timing
Unit
Luma-Chroma
Separation
and
Chroma
Demodulation
Spatial and
Temporal
Scaling
Video
Timing
Output
Control
16
Output
Data
Distinguishing Features
⢠Single-chip composite/S-Video
NTSC/PAL/SECAM to YCrCb digitizer
⢠On-chip Ultralockâ¢
⢠Square pixel and CCIR601 resolution for:
â NTSC (M)
â NTSC (M) without 7.5IRE pedestal
â PAL (B, D, G, H, I, M, N, N
combination)
â SECAM
⢠Chroma comb ï¬lter
⢠Arbitrary horizontal and 5-tap vertical
ï¬ltered scaling
⢠Hardware closed-caption decoder
⢠Vertical Blanking Interval (VBI) data
pass-through
⢠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 ï¬ltering
⢠Two-wire Inter-Integrated Circuit (I2C)
bus interface
⢠8- or 16-bit pixel interface
⢠YCrCb (4:2:2) output format
⢠Software selectable four-input analog
MUX
⢠4 fully programmable GPIO bits
⢠Auto NTSC/PAL format detect
⢠Automatic Gain Control (AGC)
⢠Typical power consumption 0.85 W
⢠IEEE 1149.1 Joint Test Action Group
(JTAG) interface
⢠100-Pin PQFP and TQFP packages
Related Products
⢠Bt819A, Bt829, Bt856/857, Bt864/865,
Bt866/867, Bt852
Applications
⢠Multimedia
⢠Image processing
⢠Desktop video
⢠Video phone
⢠Teleconferencing
⢠Interactive video
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