This part is a kind of semiconductor called AD1886A.

Function of this product has AC97 SoundMAX Codec.

Manufacturers : Analog Devices

Image and pinout :

Some of the text within the PDF file :

a AC’97 2.1 FEATURES Variable Sample Rate Audio Multiple Codec Configuration Options External Audio Power-Down Control AC’97 FEATURES AC’97 2.2 Compliant Greater than 90 dB Dynamic Range Stereo Headphone Amplifier Multibit ⌺ - ⌬ Converter Architecture for Improved S/N Ratio Greater than 90 dB 16-Bit Stereo Full-Duplex Codec Four Analog Line-Level Stereo Inputs for: LINE-IN, CD, VIDEO, and AUX Two Analog Line-Level Mono Inputs for Speakerphone and PC BEEP Mono MIC Input w/Built-In 20 dB Preamp, Switchable from Two External Sources High-Quality CD Input with Ground Sense AC’97 SoundMAX Codec AD1886A ® Stereo Line Level Outputs Mono Output for Speakerphone or Internal Speaker Power Management Support 48-Terminal LQFP Package ENHANCED FEATURES 20-Bit SPDIF Output w/32 kHz, 44.1 k [ ... ]

AD1886A PDF Datasheet Download