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BT829BKRF Datasheet

  • BT829BKRF

  • VideoStreamII Decoders

  • 127頁

  • ETC

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Advance Information
This document contains information on a product under development. The parametric information contains target
parameters that are subject to change.
Bt829B/827B
VideoStreamII Decoders
Bt829B鈥?/div>
Video Capture Processor and Scaler for
TV/VCR Analog Input
Bt827B鈥?/div>
Composite Video and S-Video Decoder
The Bt829B and Bt827B VideoStream鈩?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 Bt829A/827A
family of products. Low operating power consumption and power-down capabil-
ity make them ideal low-cost solutions for PC video capture applications on both
desktop and portable system platforms with a 3.3 V digital I/O interface. They
support square pixel and CCIR601 resolutions for NTSC, PAL, and SECAM video.
They have a 鏗俥xible pixel port which supports a variety of system interface con鏗乬-
urations, and they are offered in a 100-pin Plastic Quad Flat Pack (PQFP).
Distinguishing Features
鈥?/div>
鈥?/div>
鈥?/div>
Single-chip composite/S-Video NTSC/PAL/
SECAM to YCrCb digitizer
On-chip Ultralock
鈩?/div>
Square Pixel and CCIR601 Resolution for:
鈥?NTSC (M)
鈥?NTSC (M) without 7.5IRE pedestal
鈥?PAL (B, D, G, H, I, M, N, N
combination)
鈥?SECAM
Chroma comb 鏗乴ter
Arbitrary horizontal and 5-tap vertical
鏗乴tered 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 鏗乴tering
Two-wire Inter-Integrated Circuit (I
2
C) 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)
3.3 V I/O
Typical power consumption 0.85 W
IEEE 1149.1 Joint Test Action Group
(JTAG) interface
100-pin PQFP
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Functional Block Diagram
XT0
MUX0
MUX1
MUX2
MUX3
MUXOUT
SYNCDET
REFOUT
YREF+
YIN
YREF鈥?/div>
CREF+
CIN
CREF鈥?/div>
XT1
鈥?/div>
鈥?/div>
Analog
MUX
AGC
Decimation LPF
Output Formatting
Ultralock
and
Clock
Generation
I
2
C
JTAG
Video
Timing
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Video
Timing
Unit
40 MHz
ADC
Output
Control
40 MHz
ADC
Luma-Chroma
Separation
and
Chroma
Demodulation
Spatial and
Temporal
Scaling
16
Output
Data
Related Products
鈥?/div>
Bt829A, Bt856/857, Bt864A/865A, Bt864/
865, Bt852
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Multimedia
Image processing
Desktop video
Video phone
Teleconferencing
Interactive video

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