IDT 92HD73E十路音频CODEC方案

IDT公司的92HD73E是低功耗高清晰(HD)的10路音频CODEC,它和Intel的HD音频接口兼容. 92HD73E取样速率高达192kHz,能提供立体声24位的分辨率,同时支持全双工7.1音频和VoIP,主要应用在多媒体笔记本电脑和台式PC.本文介绍了92HD73E的主要特性,方框图,功能方框图以及Widget 方框图, 所支持的软件和参考设计的详细电路图.

The 92HD73E codec is a low power optimized, high fidelity, 10-channel audio codec compatible with Intel’s High Definition (HD) Audio Interface. The 92HD73E codec provides stereo 24-bit resolution with sample rates up to 192kHz. Dual SPDIF provides connectivity to consumer electronic equipment that is WLP compliant. The 92HD73E provides high quality, HD Audio capability to multimedia notebook and desktop PC applications.

92HD73E 主要特性:
10 Channels (5 stereo DACs and 2 stereo ADCs) with 24-bit resolution
Supports full-duplex 7.1 audio and simultaneous VoIP
Microsoft WLP 3/4 premium logo compliant, as defined in WLP 3.09
Optimized and flexible power management with pop/click mitigation
2 independent S/PDIF Output converters for WLP compliant HDMI/SPDIF support.
Support for 1.5V and 3.3V HDA signaling with runtime selection
Digital microphone input (mono, stereo, or quad array)
4 adjustable VREF Out pins for microphone bias
High performance analog mixer
9 stereo analog ports with presence detect capability
Two-pin volume up/down control
Digital and Analog PC Beep to all outputs
Integrated headphone amps (3)
Sample rates up to 192kHz
+3.3 V, +4 V, +4.75 V and +5 V analog power supply options
48-pin QFP RoHS package



图1. 92HD73E方框图



图2.92HD73E功能方框图



图3.92HD73E Widget 方框图

所支持的软件:
Software Support
Intuitive graphical user interface that allows configurability and preference settings
SKPI (Kernel Processing Interface)
Enables plug-ins that can operate globally on all audio streams of the system
12 band fully 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 audio connections made
Dynamics Processing (SKPI plug-in)
Enables improved voice articulation
Compressor/limiter allows higher average noise level without resonances or damage to
speakers.
IDT Vista APO wrapper
Enables multiple APOs to be used with the IDT Driver
Microphone Beam Forming, Acoustic Echo Cancellation, and Noise Suppression
Dynamic Stream Switching
Improved multi-streaming user experience with less support calls
Dolby PC Entertainment Experience Logo Program
Dolby Master Studio ™ (MS)
Dolby Home Theater™ (HT)
Dolby Sound Room™ (SR)
Dolby Technologies
Dolby Headphone™, Dolby Virtual Speaker™
Dolby ProLogic II™, Dolby ProLogic IIx™
Dolby Digital Live™ (DDL)
Maxx Player™ from Waves
WOWTM and Tru SurroundTM from SRS

This schematic shows a Microsoft WLP 3.x Premium Desktop compliant reference design for a 7.1 surround sound system, combined with an RTC channel for simultaneous VoIP. The jack arrangement is compliant with Intels ICH9 default audio configuration. Most ports are capable of performing alternative functions.



图4. 92HD73E参考设计电路图(1)



图5. 92HD73E参考设计电路图(2)



图6. 92HD73E参考设计电路图(3)