View mn662747rph datasheet:

For Audio Equipment MN662747RPH Signal Processing LSI for CD Players Overview The MN662747RPH is a CD signal processing LSI that, (Audio circuits) on a single chip, combines optics servos for the CD player Digital filter using 8-fold oversampling (focus, tracking, and traverse servos), digital signal Built-in D/A converter (1-bit D/A converter) processing (EFM demodulation and error correction), Built-in differential operational amplifier (secondary digital servo processing for the spindle motor, digital low pass filter) filter, and D/A converter, so thus covers all signal processing functions from the head's RF amplifier onward. (Other) Built-in playback pitch control function (normal Features speed only) (±13%) Support for quadruple-speed playback (digital servo (Op