ALC268中文资料2+2 Channel High Definition Audio Codec数据手册Realtek规格书

描述 Description

The ALC268 series are 4-Channel High Definition Audio Codecs with UAA (Universal Audio Architecture), featuring two stereo DACs and two stereo ADCs. The 4 channels of DAC support stereo sound playback on the rear panel and independent stereo sound output on the front panel simultaneously (multiple streaming). The two stereo ADCs integrate two stereo and independent analog sound inputs.The ALC268 series incorporates Realtek proprietary converter technology to achieve 95dB dynamic range playback quality and 90dB dynamic range recording quality. They are designed for Windows Vista premium desktop and laptop systems. The ALC268 series also supports up to 4 digital microphone channels (microphone array) with Acoustic Echo Cancellation (AEC), Beam Forming (BF), and Noise Suppression (NS) technology simultaneously, significantly improving sound quality for PC VoIP applications. The S/PDIF output offers easy connection of PCs to high quality consumer electronic products such as digital decoders and speakers. The ALC268 supports host/soft audio from the Intel ICH 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, and software equalizer audio technology to provide an excellent entertainment package and game experience for PC users.
 

特性 Features

Hardware Features
95dB SNR DACs meet Windows Vista Premium requirement
90dB SNR ADCs meet Windows Vista Premium requirement
Two stereo DACs support 16/20/24-bit PCM format for stereo audio playback
Two stereo ADCs support 16/20-bit PCM format for two stereo independent sound inputs
All DACs supports 44.1k/48K/96k/192kHz sample rate
All ADCs support 44.1k/48k/96kHz sample rate
16/20/24-bit S/PDIF-OUT supports 44.1k/48k/88.2k/96k/192kHz sample rate
Up to four channels of digital microphone input are supported
Supports MONO line output with independent volume control
High-quality analog differential CD input
Supports external PCBEEP input and built-in digital BEEP generator
Software selectable 2.5V/3.75V/4.2V VREFOUT
Two jack detection pins each designed to detect up to 4 jacks
1dB resolution of analog output volume control
Programmable 20dB and 40dB boost for analog microphone input
Supports hardware digital volume control for digital microphone input
Built-in headphone amplifiers for port-A and port-D
4 GPIOs (GPIO0/GPIO3 are digital GPIO shared with digital MIC interface, GPIO1/GPIO2 are analog) for customized applications
EAPD (External Amplifier Power Down) is supported
Supports Anti-pop mode when analog power AVDD is on and digital power is off
Power support: 3.3V digital core power; 1.5V~3.3V digital IO power for HDA link; 3.3V~5.0V analog power
Power management features
48-pin LQFP ‘Green’ package
48-pin QFN ‘Green’ package

Software Features
Meets Microsoft WLP 3.0x audio requirements
EAX™ 1.0 & 2.0 compatible
Direct Sound 3D™ compatible
A3D™ compatible
I3DL2 compatibleHRTF 3D Positional Audio
Emulation of 26 sound
environments to enhance gaming experience
10 Software Equalizer Bands
Voice Cancellation and Key Shifting in Karaoke mode
Realtek Media Player
Enhanced Configuration Panels (2 feet UI and 10 feet UI for Media Center)
Microphone Acoustic Echo Cancellation (AEC), Noise Suppression (NS), and Beam Forming (BF) technology for voice applications

 

应用 Application

Windows Vista premium desktop and laptop PCs
Information appliances (IA) with High Definition Audio Controller