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BT857 Datasheet

  • BT857

  • YCrCb or RGB to NTSC/PAL Digital Video Encoder

  • 54頁

  • ETC

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YCrCb or RGB to NTSC/PAL
Digital Video Encoder
The Bt856/7 is designed speci鏗乧ally for video systems requiring the generation of
525-line (NTSC/PAL鈥揗) or 625-line (PAL鈥揃, D, G, H, I, N, N-Argentina) compos-
ite or Y/C (S-video) signals.
The Bt856 and Bt857 are functionally identical, with the exception that Bt857
can output the Macrovision anticopy algorithm.
Horizontal sync (HSYNC*) and vertical sync (VSYNC*) may be con鏗乬ured as
inputs (slave mode) or outputs (master mode). BLANK* is an input and may be
externally controlled.
24-bit linear or gamma-corrected RGB data or 4:2:2 YCrCb data may be input.
The rise and fall times of sync, the burst envelope, and closed caption data are inter-
nally controlled.
Analog luminance (Y) and chrominance (C) information is available on the Y and
C outputs for interfacing to S-video equipment. The composite analog video signal
is output simultaneously onto two analog outputs. This allows one output to provide
baseband composite video and another output to drive an RF modulator. Analog
RGB is available to support the European SCART/PeriTV interface.
Bt856
Bt857
Distinguishing Features
鈥?RGB or YCrCb Inputs, Selectable on a
Pixel-by-Pixel Basis
鈥?NTSC/PAL/PAL鈥揗/PAL鈥揘 (Argentina)
Composite Video Output
鈥?S-Video/RGB Outputs Supported
鈥?CCIR 601 or Square Pixel Operation
鈥?2x Oversampling
鈥?9-bit DACs
鈥?Master or Slave Video Timing
鈥?Noninterlaced Operation
鈥?Macrovision Support (Bt857 Only)
鈥?Closed Captioning Encoding
鈥?Power-Down Mode
鈥?SCART Support (RGB Outputs)
鈥?I
2
C Interface
鈥?On-Board Voltage Reference
鈥?Internal Color Bar Generator
鈥?68-pin PLCC Package
Functional Block Diagram
IIC DATA
IIC CLOCK
VREF_OUT
VREF_IN
FSADJUST
Related Products
COMP
CLKX2
CLKX1
R[0:7]
G[0:7]
B[0:7]
Latch
HSYNC*
VSYNC*
BLANK*
Color
Space
Convert
GAMMA
Correct
Internal
VREF
9
DAC
鈥?Bt819
鈥?Bt851
鈥?Bt856EVM
CVBS/B
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Digital Set Top Box
Direct Broadcast Satellite (DBS)
Digital Video Disk (DVD)
Digital VCR
VideoCD
9
2x
Upscaling
Mod.
and
Mixer
DAC
CVBS/G
9
DAC
Y/CVBS
1.3 MHz
LPF
9
DAC
C/R
FIELD
SLAVE
RESET* PAL INTERLACE SQUARE GAMMA* YCMODE
SLEEP RGBOUT
Brooktree
廬
Brooktree Corporation 鈥?9868 Scranton Road 鈥?San Diego, CA 92121-3707 鈥?619-452-7580
1-800-2-BT-APPS 鈥?FAX: 619-452-1249 鈥?Internet: apps@brooktree.com 鈥?L856001 Rev. C

BT857相關(guān)型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    790BT8-50K 
  • 英文版
    Color Encoder IC
    Conexant
  • 英文版
    YCrCb or RGB to NTSC/PAL Digital Video Encoder
    ETC
  • 英文版
    YCrCb or RGB to NTSC/PAL Digital Video Encoder
    ETC [ETC]
  • 英文版
    YCrCb or RGB to NTSC/PAL Digital Video Encoder
    ETC
  • 英文版
    YCrCb or RGB to NTSC/PAL Digital Video Encoder
    ETC [ETC]
  • 英文版
    ETC [68-pin Plastic Leaded Chip Carrier (PLCC)]
    ETC
  • 英文版
    PCM Transceiver

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