Multiport YCrCb to NTSC / PAL / SECAM Digital Video Encoder

The Bt860/861 is a multiport digital video encoder with pixel synchronization and per-pixel blending capabilities. The three 8-bit YCrCb data ports allow for a variety of video and graphic overlay configurations useful in video set-top box applications. The Bt860/861 is specifically designed for video systems requiring composite, Y/C (S-Video), and simultaneous component YUV or RGB (SCART) video signals. Worldwide video standards are supported, including NTSC-M (N. America, Taiwan, Japan), PAL-B,D,G,H,I (Europe, Asia), PAL-M (Brazil), PAL-N (Uruguay, Paraguay),

PAL-Nc (Argentina), PAL-60, NTSC-443, and SECAM. The Bt860 and Bt861 are functionally identical except that the Bt861 can output the Macrovision 7.x anticopy algorithm.

Distinguishing Features

• Six 10-bit DACs with individual power management

• Simultaneous output of YUV, S-Video, and CVBS, or RGB (SCART), S-Video, and CVBS

• Current drive output DACs for superior video quality and reduced system cost

• Dynamic video load sensing for reduced power operation

• Three sharpness filter options (1,2,3.5 dB gain) and four reduction filter options

• Programmable adjustment of brightness, contrast, color saturation, and hue

• Glueless interface with a video decoder

• Three 8-bit YCrCb 4:2:2 inputs for overlay or blending

• ITU-R BT.656, ITU-R BT.601 digital video input options

• NTSC-M, PAL (B,D,G,H,I), PAL-M, PAL-N, NTSC-443, PAL-Nc, PAL-60 and SECAM video output

• 2x upsampling and internal filtering for reduced cost

• Master or slave video timing with programmable HSYNC* delay

• Interlaced/noninterlaced operation

• Macrovision 7.x copy protection (Bt861)

• Closed Captioning and Extended Data Services encoding

• Teletext encoding (WST system B)

• 400 kHz serial programming interface

• On-board voltage reference

• Reduced power modes

• Programmable luma delay (two channels)

• 3.3 V supply, 5 V-tolerant inputs

• Copy Generation Management System (CGMS) support

• VARIS-II and Wide Screen Signalling (WSS) multiple aspect ratio support

• Internal color bar generation

• Blue field generation

• 80-pin MQFP package

Applications

• Digital cable television systems

• Satellite TV receivers (DBS/DVB/DSS)

• DVD players

• Video CD players

• Digital cameras

• PC add-on cards

• Video editing