(BT856 / BT857) YCrCb or RGB to NTSC/PAL Digital Video Encoder
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YCrCb or RGB to NTSC/PAL Digital Video Encoder
The Bt856/7 is designed specifically for video system...
Description
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YCrCb or RGB to NTSC/PAL Digital Video Encoder
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) composite 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 internally 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
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 Pow...
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