7.1+2 channel high definition audio codec with two independent s/pdif-out
General Description
The ALC888S, an advanced version of the ALC888, is a high-performance 7.1+2 Channel High Definition Audio Codec that meets Microsoft Windows Vista (WLP 3.08) premium requirements. It provides ten DAC channels that simultaneously support 7.1 sound playback, plus independent stereo sound output (multiple streaming) through the front panel stereo outputs. The ALC888S 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 ALC888S 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 ALC888S features extra (secondary) S/PDIF-OUT outputs and converters that transport digital audio output to a High Definition Media Interface (HDMI) transmitter (becoming more common in high-end PCs).
The ALC888S 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 ALC888S provides an excellent home entertainment package and game experience for PC users.
Features
Hardware Features
High-performance DACs with 97dB SNR (A-Weighting), ADCs with 90dB SNR (A-Weighting)
Meets performance requirements for Microsoft WLP 3.08 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-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
Two independent 16/20/24-bit S/PDIF-OUT converters support 44.1k/48k/88.2k/96k/192kHz sample rate, one for nominal digital audio, the other one for digital audio output to a HDMI transmitter
One 16/20/24-bit S/PDIF-IN converter supports 44.1k/48k/96k/192kHz sample rate
Up to four channels of analog microphone array input are supported for AEC/BF application
Supports stereo digital microphone interface for improved voice quality
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 digital GPIOs (General Purpose Input and Output) and one analog GPIO (AGPIO) for customized applications
The analog GPIO (AGPIO) can be a jack detection pin when the analog CD input is used as line level input and configured to support jack detection, which is driver independent
Supports anti-pop mode when analog power AVDD is on and digital power is off
48-pin LQFP "Green" package
Software Features
Meets Microsoft WLP 3.08 audio requirements
WaveRT-based audio function driver for Windows Vista
EAX™ 1.0 & 2.0 compatible
Direct Sound 3D™ compatible
3D™ compatible
3DL2 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
Realtek Configuration Panel to improve users experience for Windows Vista
Microphone Acoustic Echo Cancellation (AEC), Noise Suppression (NS), and Beam Forming (BF) technology for voice application
Features Dolby® Digital Live and DTS® CONNECT™ software (Optional)
Features Dolby® Home Theater software (Optional)
Applications
Desktop multimedia PCs
Notebook PCs
Information appliances (IA) e.g., set-top box |
发表于 2008-11-22 11:14:41
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发表于 2008-11-22 14:31:03
发表于 2008-11-22 22:49:47
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