This part is a kind of semiconductor called TEA6320T.

Function of this product has Sound fader control circuit.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

INTEGRATED CIRCUITS DATA SHEET TEA6320 Sound fader control circuit Preliminary specification Supersedes data of September 1992 File under Integrated Circuits, IC01 1995 Dec 19 Philips Semiconductors Preliminary specification Sound fader control circuit FEATURES • Source selector for four stereo and one mono inputs • Interface for noise reduction circuits • Interface for external equalizer • Volume, balance and fader control • Special loudness characteristic automatically controlled in combination with volume setting • Bass and treble control • Mute control at audio signal zero crossing • Fast mute control via I2C-bus • Fast mute control via pin • I2C-bus control for all functions • Power supply with internal power-on reset. QUICK REFERENCE DATA SYMBOL VCC ICC V [ ... ]

TEA6320T PDF Datasheet Download