Overview:
The AU8522 is a DTV demodulation IC for ATSC, digital cable, and legacy TV applications. Internally, the AU8522 consists of a fully compliant ATSC A/74 8-VSB demodulator, a 64/256 QAM demodulator, a complete NTSC analog TV demodulator and video decoder, and a BTSC/A2/FM audio decoder. The AU8522 directly accepts IF or low IF from the RF tuner section via a 12-bit internal Analog-to-Digital Converter, and following demodulation and error correction, outputs MPEG-2 transport stream. The AU8522 utilizes Auvitek's proprietary demodulation algorithms and adaptive signal-tracking architecture to offer market-leading receiver performance. The AU8522 is ideally suited for any DTV or PC-TV system that requires full support for legacy TV broadcast alongside DTV reception.
Features:
- ATSC A/74 compliant 8-VSB demodulation
- OpenCable, ANSI/SCTE DVS-031, ITU-T J.83 Annex B, and DOCSIS compliant 64/256 QAM demodulation
- EIA/CEA-909 Smart Antenna IF
- Integrated 12-bit ADC
- Integrated 30dB range analog RF and IF AGC controllers
- Fully programmable IF frequency
- TS and PS MPEG inputs and outputs
- Dual I²C Bus support
Audio TV Decoder:
- NTSC demodulation and separation
- VBI data slicer
- Color controls
- Macrovision support
- BTSC/A2/FM compliant decoding
- 3-band audio EQ
Applications:
- HDTV and STB receivers
- PC peripherals
Package:
Block Diagram:
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