STAC9227 Datasheet, PDF (1/237 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

8-CHANNEL HIGH DEFINITION AUDIO CODEC
DATASHEET
STAC9227/9228/9229/9230
Description
The STAC9227/9228/9229/9230 are a family of Theater
Quality 8-channel audio CODECs that enable systems with
7.1 audio or 5.1 audio playing simultaneously with VoIP or
another stereo audio stream. SigmaTel's proprietary Σ∆
technology provides high fidelity with an estimated DAC
SNR up to 105dB. Up to four digital microphones are
supported enabling high quality voice input for increased
usability of voice applications.
Features
• High performance HD Audio CODEC provides
Theater Quality Audio
• High performance Σ∆ technology
• 105dB DAC SNR
• 90dB ADC SNR
• Four Stereo DACs and three stereo ADCs
• Supports 7.1 audio or 5.1 audio with simultaneous Real
Time Communication (RTC) channel such as VoIP or
separate stereo audio stream
• 24-bit resolution with up to 192 KHz sample rates
• Digital Microphone Interface
• Direct interface up to four Digital Microphones
• Analog Stereo Microphone
• Microphone Boost 0, 10, 20, 30, 40dB
• Six adjustable Vref outputs for microphone bias
• Integrated Headphone Amps (3).
• S/PDIF In and Out
• ADAT^® Optical “Lightpipe”
Output Support
• Volume Up/Down Control
• Jack Insertion Detect and
Impedance Sensing Supports Jack Retasking and
Universal Jacks
• Digital PC Beep to all outputs
• +3.3 V to +5 V analog power supply options
• Environmental 48-pin LQFP package option
Software Support
• SKPI (Kernel Processing Interface)
• Enables plug-ins that can operate globally on all audio
streams of the system
• 12 band parametric equalizer SKPI plug-in
• Constant, system-level effects tuned to optimize a
particular platform can be combined with user-mode
“presets” tailored for specific acoustical environments
and applications
• System-level effects automatically disabled when
external connections made
• Dynamics Processing SKPI plug-in
• Enables improved voice articulation
• Compressor/limiter allows higher average noise level
without resonances
• Dolby PC Entertainment Experience Logo Program
• Dolby Master Studio^TM
• Dolby Home Theater^TM
• Dolby Sound Room^TM
• Dolby Technologies
• Dolby Headphone^TM, Dolby Virtual Speaker^TM
• Dolby ProLogic II^TM, Dolby ProLogic IIx^TM
• Dolby Digital Live^TM
• Intel Audio Studio^TM from Sonic Focus
• Maxx Player^TM from Waves
• Microphone Beam Forming, Acoustic Echo
Cancellation, & Noise Suppression from
Knowles^TM
IDT™ 8-CHANNEL HIGH DEFINITION AUDIO CODEC
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IDT CONFIDENTIAL
STAC9227/9228/9229/9230V 1.0 MARCH 2007