This part is a kind of semiconductor called ALC655.

Function of this product has 6-Channel Audio Codec.

Manufacturers : Realtek Semiconductor

Image and pinout :

Some of the text within the PDF file :

ALC655 SIX CHANNEL AC’97 2.3 AUDIO CODEC ALC655 0. Revision History ..............................................................2 1. Features............................................................................3 2. General Description ........................................................3 3. Block Diagram.................................................................4 4. Pin Assignments ..............................................................5 5. Pin Description ................................................................6 5.1 Digital I/O Pins ..........................................................6 5.2 Analog I/O Pins..........................................................6 5.3 Filter/Reference........................................... [ ... ]

ALC655 PDF Datasheet Download