CX2077x USB Audio CODEC IC with Integrated DSP and Tri-Color PWM LED Driver AudioSmart™ Product Brief An Innovative USB DSP CODEC SoC with Integrated PWM LED Drivers Unified communication USB headset Skype super-wideband headset Entertainment USB headset/headphones Gaming USB headset USB microphone Key Features • • • • • • • • USB audio CODEC with integrated DSP Tri-color PWM LED driver Advanced voice and audio DSP algorithms Digital audio interfaces Microphone input Line output HP output Dual stereo DMA endpoints • PCM/I2S, S/PDIF digital audio I/F(s) System Block Diagram L M ic In R M ic SE/ M ic In + DAC R HP Out 32 Ω SE/DIFF Line Out DMA Memory EQ M L Line In ADC M SE/DIFF Line Out DAC DMA R Line In GPIO LDO Switching Cap Regulator GPIO Fly P Fly N Vcore Filter GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO GPIO UART EEPR OM D AT PWM Controller TX I2S/PC M T X SPD IF USB 3.3 V Analog +5 In Controller I2S/PC M R X I2S/PC M C LK GPIO GPIO Jack Sense EEPR OM C LK Sense Clock Circuitry RX XT AL Out DSP_X2 PW M LED 2 XT AL In Bias Generator PW M LED 1 MIC Bias 2 LDO 3.3 V Digital I2S/PC M W S • www.conexant.com • 008PBR00 ADC M PCM/I2S Conexant Confidential L HP Out 32 Ω M Boost/ Single Ended/ Differential R M ic In - MIC Bias 1 The audio performance is optimized with stereo high fidelity, 24-bit DAC. All internal analog circuitry uses differential signaling to guard against noise coupling from interfering RF. The external BOM cost is minimized with an internal PLL and a headset in-rush circuit. Boost/ Single Ended/ Differential EQ L Mic SE/ M ic In + U SB- Conexant’s innovative CX2077x product family contains an industry first internal tri-color RGB PWM driver and controller. Each LED output contains an 8-bit resolution PWM controller for brightness and dimming control, which enables designers to create differentiated userfriendly products. The on-chip RGB PWM significantly reduces the BOM costs. • • • • • PW M LED 0 The on-chip DSP runs a suite of innovative Conexant proprietary voice processing algorithms and audio post processing effects that dramatically improve sound quality and free-up processing power for other applications, without compromising on cost and future firmware scalability. Key audio innovations include subband AEC, dynamic range control, in-band microphone noise reduction, 3D, and microphone AGC. Applications SPDF Conexant’s CX2077x is the first USB audio CODEC IC product family that incorporates the functionality of a digital audio/voice processor, USB audio CODEC, tri-color PWM driver, and digital audio interfaces in one costeffective, single-chip package. The award-winning DSP runs a suite of turnkey audio and voice algorithms that greatly enhance the voice and audio experience. The devices are part of Conexant’s embedded audio solutions and are specifically designed for USB audio peripherals, including headsets, headphones, and microphones. The CX2077x product family includes the CX20773, and CX20774. The CX2077x turnkey solutions eliminate the need for a multiple-chip reference design, making it easy and economical for manufacturers to design high-quality audio products. A complete evaluation kit with reference board and all the necessary technical documents and software is available. U SB+ Product Overview CX2077x USB Audio CODEC IC with Integrated DSP and Tri-Color PWM LED Driver | AudioSmart™ Product Brief Benefits Additional Features • • • • UART, I2C On-chip voice/audio DSP – DSP support for 3D, EQ, NR, AEC, BF,CNG, ST, AGC, and DRC – USB codex, 2.0 full speed Stereo: – Input, differential, and single-ended – Input, single-ended for line-in – Output, differential and single-ended – DAC/ADC – Headphone driver, single-ended 8kHz, 16kHz, 24kHz, 32kHz, 44.1kHz, and 48kHz sampling rate—<100mA operation for headset/ headphone terminal type CX2077x Product Comparison Feature • • • • • • • • • • • • • • • • • • Four-wire external co-processor interface (I2S/SPDIF-Out) In-rush circuit elimination circuit for headset/ headphone applications Stereo microphone input with hardware boost and bias 35mW stereo headphone driver Jack sense 48-pin QFN package Part Number CX20773 USB Audio CX20774 USB 2.0 Full Speed Converter/Sampling Rate Tri-color PWM LED Driver Audio enhancement and optimization for speakers and microphones Configurable features for product differentiation Improves audio and voice experience Independent gaming audio and voice audio control Connect to third-party digital audio processor Tri-color (RGB) PWM LED driver and controller 8-bit, 256-step independent and group brightness, and dimming control 9kb controller RAM for firmware extension and plug-in Up to 11 GPIOs Volume, mute, hook, and LED Infinity rotary wheel control Press and hold button support Two DACs/Two ADCs Supporting 8kHz, 16kHz, 24kHz, 32kHz, 44.1kHz, and 48kHz No Yes Microphone In Stereo Headphone Stereo Differential Line Out No Text LCD Display Controller No Keypad/Buttons Eight Keys Four Position Toggle Switch Yes I2S Yes S/PDIF Out Yes DSP Yes Auxiliary Input Yes Package 48 QFN www.conexant.com Headquarters: 1901 Main Street, Suite 300 Irvine, CA,92614 General Information: U.S. and Canada: 888-855-4562 | International: 1 + 949-483-3000 © 2014 Conexant Systems, Inc. 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