This is a kind of audio codec.
Part Number: ALC887, ALC887-GR
Function: 7.1 CHANNEL HIGH DEFINITION AUDIO CODEC
Package: LQFP-48 Type
Manufacturer: Realtek Semiconductor ( www.realtek.com.tw )
See the preview image and the PDF file for more information.
Image
Description
The ALC887 is a high-definition audio codec developed by Realtek Semiconductor Corp. It is a multi-channel audio codec that supports up to 7.1-channel audio and supports both analog and digital audio interfaces. The device is compatible with Windows, MacOS, and Linux operating systems and is commonly used in motherboards, sound cards, and other computer peripherals.
The ALC887 is a 7.1 Channel High Definition Audio Codec with two independent SPDIF outputs. Featuring eight channels of DAC support 7.1 sound playback, and integrates two stereo ADC that can support a stereo microphone, and feature Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) for voice applications. ALC887 is designed not only to meet the premium audio performance requirements in current WLP3.10 (Windows Logo Program), but provides better characteristics for future WLP. That brings user real high fidelity of sound quality.
ALC887 Pinout
Hardware
Features
1. Meets premium audio requirements for Microsoft WLP 3.10
2. Meets stricter performance requirements for future WLP
3. High-performance DACs with 97dB Signal-to-Noise Ratio (SNR), ADCs with 90dB SNR
4. Four stereo DACs (8 channels) support 16/20/24-bit PCM format for 7.1 sound playback.
5. Two stereo ADCs (4 channels) support 16/20/24-bit PCM format recording simultaneously
6. All DACs supports 16/20/24-bit, 44.1k/48k/96k/192kHz sample rate
Software
Features
1. Meets Microsoft WLP 3.10 and future WLP audio requirements
2. WaveRT based audio function driver for Windows Vista
3. EAX 1.0 & 2.0 compatible, especially the EAX effect is supported in Windows Vista
4. Direct Sound 3D™ compatible
5. Emulation of 26 sound environments to enhance gaming experience
6. Multi bands of software equalizer and tool are provided
7. Voice Cancellation and Key Shifting effect
Official Homepage: https://www.realtek.com/en/
Reference Site: OS X Realtek ALC887 Onboard Audio ( https://github.com/toleda/audio_ALC887 )
