USB Speakers-on-a-Chip with Hardware Acoustic Echo Cancellation DSP - Conexant - #1

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AB20 Architectural Binder table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:3.00pt "Arial", sans-serif; } .font1 { font:7.00pt "Arial", sans-serif; } .font2 { font:8.00pt "Arial", sans-serif; } .font3 { font:9.00pt "Arial", sans-serif; } .font4 { font:11.00pt "Arial", sans-serif; } .font5 { font:14.00pt "Franklin Gothic Medium", sans-serif; } .font6 { font:4.00pt "Georgia", serif; } .font7 { font:11.00pt "Georgia", serif; } .font8 { font:18.00pt "Lucida Sans Unicode", sans-serif; } Audio Speakers-on-a-Chip edn$J1£ t?twrjiu 2Û09 • 20119 □esign m/. edn INNOTATION Honoring Excellence in Electronics WINNER 2008 CON EXANT' AP tl/ïnnm USB Speakers-on-a-Chip with Hardware Acoustic Echo Cancellation DSP CX20562 Conexant's portfolio includes a comprehensive suite of semiconductor solutions for communications and consumer applications. Conexant's CX20562 is the world's first family of "Speakers-on-a-Chip" (SPoC) solutions that integrates the functionality of a digital audio/voice processor, audio codec, and Class-D amplifier in one cost-effective 48-pin Quad Flat-No Lead (QFN) package. This solution is optimized with stereo, high fidelity 24-bit DAC for music rendering. It also features a built-in echo-free speakerphone with wideband Acoustic Echo Cancellation (AEC) and a noise-reduction hardware Digital Signal Processor (DSP). The high-quality music speaker and voice speakerphone combination is made possible with the latest advances in all-CMOS mixed-signal and DSP integration. The turnkey solution enables manufacturers to quickly design cost-effective convergence products for high definition audio and voice applications. Key innovations inlclude BrightSound™, a Conexant proprietary sound processing algorithm that dramatically improves audio quality and reduces speaker clipping. In Night Mode, the background sound signal quality is maintained, while allowing the user to clearly hear the vocal audio when watching a movie or playing a video game without increasing the volume. The CX20562 also supports many consumer-oriented features such as Music on-hold, Aux fade-in/ fade-out, DSP Array Microphones, Global System for Mobile Communications (GSM) noise immunity, and Instant Messaging (IM) "hotkey" launch button. The CX20562 has one USB interface that allows manufacturers to develop plug-and-play products that are PC and Mac compatible and one auxiliary analog input for connection with other audio peripherals. The device supports both digital and analog volume control, microphone mute, and speaker mute. The CX20562 features additional interface to 20 keys programmable keypad and LCD display interface. The built-in Class-D amplifier is capable of driving 1.2 W on 4 ohm load via USB host power, it can also be used as the pre-amp for larger powered speakers output. The efficiency of Class-D amplifier makes it ideal for portable audio application. Conexant's SPoC solution provides the technology platform to make the convergence of audio entertainment and voice communication a reality. Distinguishing Features • Wideband Acoustic Echo Cancellation DSP engine exceeding TIA 920 requirement • Integrated 1.2 W Class-D amplifier, higher output reference design available • 24-bit DAC/ 16-bit ADC • USB 2.0 full speed compliant • Auxiliary line in input with jack sense • Music-On-Hold • Aux Fade-in/ Fade-out • DSP Array Microphone • BrightSound • USB bus powered or external powered option A complete evaluation kit including the reference board and all necessary technical documents and software is available Part Number CX20562 Description USB Speakers-on-a-Chip with Hardware Acoustic Echo Cancellation DSP CX20562 Interface Diagram