This part is a kind of semiconductor called D63711.

Function of this product has UPD63711.

Manufacturers : NEC

Image and pinout :

Some of the text within the PDF file :

PRELIMINARY PRODUCT INFORMATION MOS INTEGRATED CIRCUIT µPD63711 COMPACT DISC DIGITAL SERVO/DATA PROCESSOR WITH ON-CHIP RF AMPLIFIER The µPD63711 is an LSI that has all of the functions required to control a CD player, with a digital servo, data processor, RF amplifier, audio DAC, and post-processing filter incorporated on a single chip. CD-TEXT is also supported. Detailed function descriptions are provided in the following user’s manuals. Be sure to read them before designing. µPD63711 User’s Manual: To be prepared FEATURES • Realization of set miniaturization by integrating a digital servo, data processor, 8-fs oversampling digital filter, D/A converter, and RF amplifier on a single chip. • On-chip SCF (Switched Capacitor Filter) as audio DAC block po [ ... ]

D63711 PDF Datasheet Download