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. SigmaTels 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