[Rockwell Semiconductor Systems]

Bt829B– Video Capture Processor and Scaler for  TV/VCR Analog Input
Bt827B– Composite Video and S-Video Decoder

The Bt829B and Bt827B VideoStream™ Decoders are a family of single-chip, pinand register-compatible, composite NTSC/PAL/SECAM video and S-Video decoders. They are also pin and register backward compatible with the Bt829A/827A family of products. Low operating power consumption and power-down capability 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 flexible pixel port which supports a variety of system interface configurations, and they are offered in a 100-pin Plastic Quad Flat Pack (PQFP).

Distinguishing Features
• Single-chip composite/S-Video NTSC/PAL/
   SECAM to YCrCb digitizer 
• On-chip Ultralock
• Square Pixel and CCIR601 Resolution for:
   – NTSC (M) 
   – NTSC (M) without 7.5IRE pedestal 
   – PAL (B, D, G, H, I, M, N, N 
      combination)
   – SECAM
• Chroma comb filter
• Arbitrary horizontal and 5-tap vertical 
   filtered 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 filtering 
• Two-wire Inter-Integrated Circuit (I2C) 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

APPLICATIONs
• Multimedia
• Image processing
• Desktop video
• Video phone
• Teleconferencing
• Interactive video