Description
The CXA1797Q is an audio signal processing LSI designed for use in cassette decks.
Functions include Dolby B-C noise reduction, recording equalizer amplifier, meter circuit (logarithmic), bias control circuit, and playback switching circuit. Serial control of these functions is possible.

Features
• Few external parts
• Serial control of each functions possible
• Dolby B-C noise reduction
• Dolby S noise reduction select switch
• Recording equalizer amplifier
• Recording volume control
• Playback input select switch
• Meter circuit (logarithmic wave detection)
• Bias control circuit (left and right independent)

Applications
    Cassette decks