Overview:
The AU8502 is a sophisticated demodulator IC for digital ATSC 8-VSB and analog NTSC/BTSC TV transmission, which builds on Auvitek's powerful and efficient demodulator algorithm and adaptive filter technology. The AU8502 is an ideal device for iDTVs, STBs and PC add-on products.
Features:
Digital TV Demodulation:
- Built-in 30dB range analog AGC and 12-bit ADC
- Built-in Tuner RF and IF AGC controllers
- Programmable IF frequency
- ATSC compliant 8-VSB demodulation
- Transport Stream or Program Stream input/output in parallel or serial format
- Auto analog, digital channel detection and switching
Bus and Interface:
- I2S for audio input/output
- I2C Bus support (master/slave configurable)
- GPIO support
Package: 128-pin LQFP
Analog TV Processor:
- NTSC analog demodulation and audio/video separation filters
- TV decoder with 2-D comb filter
- VBI data slicer
- Supports up to four analog video inputs: CVBS and S-video
- Control of brightness, contrast, saturation and hue
- Three levels of Macrovision copy protection detection according to Macrovision detection specification Rev.1
- Adaptive anti-alias filtering and versatile filter bandwidth selection
- Video output in ITU656 format
Audio Processor:
- BTSC TV sound decoder
- Audio output configurable in Digital or Stereo audio format
- On-chip MCLK (256*Fs) output
Applications:
- HD/SDTV
- Set-top boxes
- STB/DVD players
- PC USB device
Block Diagram:
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