Description
The CXA2174S is an IC designed as a decoder for the Zenith TV Multi-channel System and also corresponds with I2C BUS. Functions include stereo demodulation, SAP (Separate Audio Program) demodulation, dbx noise reduction and sound processor. Various kinds of filters are built-in this IC. Adjustment, mode control and sound processor control are all executed through I2C BUS.

Features
• Alignment-free VCO and filter
• Audio multiplexing decoder dbx noise reduction decoder sound processor
    — One external input
    — Volume control are all included in a single chip. Almost any sort of signal processing is possible through this IC.
• Input level, separation adjustments and each mode control are possible through I2C bus.

Applications
    TV, VCR and other decoding systems for US audio multiplexing TV broadcasting