CX2077X usb audio codec ic with integrated dsp and tri-color pwm led driver innovative cost-effective single-chip solution enables superior audio conexant?s CX2077X is the first usb audio codec integrated circuit (ic) product family that incorporates the functionality of a digital audio/ voice processor, usb audio codec, and tri- color pulse-width modulator (pwm) driver, and digital audio interfaces in one cost-effective, single-chip package. the award-winning digital signal processor (dsp) runs a suite of turnkey audio and voice algorithms that greatly enhances 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 cx20773, cx20774, and cx20776. the on-chip dsp runs a suite of innovative conexant proprietary voice processing algorithms and audio post processing effects that dramatically improves sound quality and frees up processing power for other applications without compromising on cost and future firmware scalability. key audio innovations include subband acoustic echo cancellation, dynamic range control, inband microphone noise reduction, 3d, and microphone auto gain control. conexant?s innovative CX2077X product family contains an industry-first internal tri-color rgb (red, green, blue) pwm driver and controller. each led output contains an 8-bit resolution pwm controller for brightness and dimming control, enabling designers to create differentiated user-friendly products. the on- chip rgb pwm significantly reduces the bill-of- material (bom) costs. 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 mi nimized with internal pll and headset in-rush circuit. 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. applications ? unified communication usb headset ? skype super-wideband headset ? entertainment usb headset/ headphones ? gaming usb headset ? usb microphone key features benefits usb audio codec with integrated dsp audio enhancement and optimization for speakers and microphones tri-color pwm led driver configurable features fo r product differentiation advanced voice and audio dsp algorithms improves audio and voice experience dual stereo dma endpoints independent gaming audio and voice audio control digital audio interfaces 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 ra m for firmware extension and plug-in ? up to 18 gpio ? volume, mute, hook, and led ? infinity rotary wheel control ? press-n-hold button support ? 4 wires external co-processor interface (i 2 s/spdif-out) ? in-rush circuit elimination circuit for headset/headphone applications ? stereo microphone input with hardware boost and bias ? 35 mw stereo headphone driver ? jack sense ? interface to controller lcd display ? 24-button keypad support ? 48-pin and 64-pin qfn package CX2077X features ? 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 ? microphone input ? stereo input, single-ended for line-in ? stereo output, differential and single- ended ? line output ? stereo headphone driver, single- ended ? hp output ? dual stereo dma end points ? pcm/i 2 s, s/pdif digital audio i/f(s) ? uart, i 2 c ? stereo dac/stereo adc ? 8, 16, 24, 32, 44.1, 48 khz sampling rate ? <100 ma operation for headset/ headphone terminal type
CX2077X system block diagram conexant product portfolio conexant?s comprehensive product portfolio includes solutions for imaging, audio, video surveillance, and embedded modem applic ations. ? 2011 conexant systems, inc. all rights reserved. conexant and the conexant logo are registered trademarks of conexant systems, inc. all other trademarks are owned by their respective owners. although conexant strives for accuracy in all its publications, this material may contain errors or omissions and is subject to change without notice. this material is provided as is and without any express or implied warranties, including merchant ability, fitness for a paparticular purpose and non-infringement. conexant shall not be liable for any special, indirect, incidental or consequential damages as a result of its use. CX2077X product comparison l line in mic bias 1 mic bias 2 xtal in xtal ou t l mic in - r line i n sens e r x tx usb + usb- i2s/pcm ws i2s/pcm clk i2s/pcm tx spdif i2s/pcm rx eeprom clk eeprom dat l mic se/ mic in + r mic se/ mic in + r mic in - pwm led 0 pwm led 1 pwm led 2 gpio gpio gpio gpio gpio gpio gpio gpio gpio gpi o m gpio gpi o memory dsp_x2 controller pcm/i 2 s pwm controller uart adc adc spdf usb dac dac eq eq gpio gpio gpio gpio ldo ldo switching cap regulator dma dma bias generator clock circuitry jack sense m m m r hp out 32 boost/ single ended/ differential boost/ single ended/ differential 3.3 v digital 3.3 v analog +5 in fly p fly n vcore filter se/diff line out se/diff line out l hp out 32 www.conexant.com general information: u.s. and canada: (888) 855-4562 international: 1+ (949) 483-3000 headquarters 4000 macarthur blvd. newport beach, ca 92660 doc# pbr-202763
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