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BT856 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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BT856 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 54 page  Brooktree® Brooktree Corporation • 9868 Scranton Road • San Diego, CA 92121-3707 • 619-452-7580 1-800-2-BT-APPS • FAX: 619-452-1249 • Internet: apps@brooktree.com • L856001 Rev. C Bt857 Bt856 YCrCb or RGB to NTSC/PAL Digital Video Encoder Functional Block Diagram Distinguishing Features • RGB or YCrCb Inputs, Selectable on a Pixel-by-Pixel Basis • NTSC/PAL/PAL–M/PAL–N (Argentina) Composite Video Output • S-Video/RGB Outputs Supported • CCIR 601 or Square Pixel Operation • 2x Oversampling • 9-bit DACs • Master or Slave Video Timing • Noninterlaced Operation • Macrovision Support (Bt857 Only) • Closed Captioning Encoding • Power-Down Mode • SCART Support (RGB Outputs) •I2C Interface • On-Board Voltage Reference • Internal Color Bar Generator • 68-pin PLCC Package Related Products • Bt819 • Bt851 • Bt856EVM Applications • Digital Set Top Box • Direct Broadcast Satellite (DBS) • Digital Video Disk (DVD) • Digital VCR • VideoCD The Bt856/7 is designed specifically for video systems requiring the generation of 525-line (NTSC/PAL–M) or 625-line (PAL–B, 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 configured 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. Internal RESET* C/R Y/CVBS CVBS/G COMP 1.3 MHz LPF VREF_IN FSADJUST DAC DAC DAC CVBS/B DAC 9 GAMMA Correct Color Space VREF_OUT Latch R[0:7] G[0:7] B[0:7] HSYNC* VSYNC* BLANK* CLKX2 CLKX1 PAL INTERLACE SQUARE GAMMA* YCMODE RGBOUT IIC CLOCK IIC DATA Convert Mod. and Mixer 2 x Upscaling 9 9 9 FIELD SLAVE SLEEP VREF |
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