ALC888中文资料7.1+2 Channel High Definition Audio Codec数据手册Realtek规格书

描述 Description

The ALC888 series are high-performance 7.1+2 Channel High Definition Audio Codecs providing ten DAC channels that simultaneously support 7.1 sound playback, plus 2 channels of independent stereo sound output (multiple streaming) through the front panel stereo outputs. The series integrates two stereo ADCs that can support a stereo microphone, and feature Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) technology.
All analog IO are input and output capable, and headphone amplifiers are also integrated at each analog output. All analog IOs can be re-tasked according to user’s definitions, or automatically switched depending on the connected device type.
Support for 16/20/24-bit S/PDIF input and output offers easy connection of PCs to high-quality consumer electronic products such as digital decoders and speakers. The series incorporates Realtek proprietary converter technology to achieve 97dB dynamic range playback quality and 90dB dynamic range recording quality, and is designed for Windows Vista premium desktop and laptop systems.
The ALC888 series supports host/soft audio from the Intel ICH series chipset, and also from any other HDA compatible audio controller. With EAX/Direct Sound 3D/I3DL2/A3D compatibility, and excellent software utilities like Karaoke mode, environment emulation, software equalizer, HRTF 3D positional audio, and optional Dolby® Digital Live, DTS® CONNECT™, and Dolby® Home Theater programs, the ALC888 series provides an excellent home entertainment package and game experience for PC users.

特性 Features

Hardware Features
High-performance DACs with 97dB SNR (A-Weighting), ADCs with 90dB SNR (A- Weighting)
Meets performance requirements for Microsoft WLP 3.0 Premium desktop and mobile PCs
Ten DAC channels support 16/20/24-bit PCM format for 7.1 sound playback, plus 2 channels of independent stereo sound output (multiple streaming) through the front panel output
Two stereo ADCs support 16/20/24-bit PCM format, one for stereo microphone, one for legacy mixer recording
All DACs supports 44.1k/48k/96k/192kHz sample rate
All ADCs support 44.1k/48k/96k sample rate
16/20/24-bit S/PDIF-OUT supports 44.1k/48k/96k/192kHz sample rate
16/20/24-bit S/PDIF-IN supports 44.1k/48k/96k/192kHz sample rate
Up to four channels of microphone array input are supported for AEC/BF application
High-quality analog differential CD input
Supports external PCBEEP input and built-in digital BEEP generator
Software selectable 2.5V/3.75V VREFOUT
Two jack detection pins each designed to detect up to 4 jacks
Supports legacy analog mixer architecture
Wide range (–80dB ~ +42dB) volume control with 1.5dB resolution of analog to analog mixer gain
Software selectable boost gain (+10/+20/+30dB) for analog microphone input
All analog jacks are stereo input and output re-tasking for analog plug & play
Built-in headphone amplifiers for each re-tasking jack
Two GPIOs (General Purpose Input and Output) for customized applications
Supports anti-pop mode when analog power AVDD is on and digital power is off
Supports digital microphone interface for improved voice quality 48-pin LQFP ‘Green’ package
Software Features
Meets Microsoft WHQL/WLP 3.0 audio requirements
WaveRT-based audio function driver for Windows Vista
EAX™ 1.0 & 2.0 compatible
Direct Sound 3D™ compatible
A3D™ compatible
I3DL2 compatible
HRTF 3D Positional Audio
Emulation of 26 sound environments to enhance gaming experience
10-Band Software Equalizer
Voice Cancellation and Key Shifting in Karaoke mode
Realtek Media Player
Enhanced Configuration Panel to improve user experience
Microphone Acoustic Echo Cancellation (AEC), Noise Suppression (NS), and Beam Forming (BF) technology for voice application
ALC888DD-GR features Dolby® Digital Live and DTS® CONNECT™ software (Optional)
ALC888H-GR features Dolby® Home Theater(software feature)

应用 Application

Desktop multimedia PCs
Laptop PCs)
Information appliances (IA) e.g., set-top box)