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Far Field Voice Input Processor SoC




The CX20865 is the industry leading Far Field Voice Input Processor SoC, designed for Voice Interactive applications. The device includes high-performance Microphone ADCs, powerful dual core 32-bit hardware DSP, and integrated Power Management. Combined with our advanced Far Field Voice Processing Algorithms, it is the ideal turnkey solution for adding Voice Control, Voice Search, Telepresence functionalities to SmartTV, Set-Top-Box, and Game Console appliances.

The CX20865 supports a microphone array with up to four synchronized ADCs and programmable preamplifiers. Each preamplifier is paired with a dedicated bias supply to eliminate crosstalk. The entire input path guarantees 106 dB Dynamic Range, which maximizes Speech to Noise ratio with low boost and prevents microphone saturation.


Voice Interactive SmartTV/STB
Voice Controlled Appliance
Far Field Audio Capturing
Game Console


  • Multi-vendors Speech Recognition Hit Rate Optimization
  • SkypeTM TV certified Far Field Voice Processing with Watch Live and Talk®
  • Selective Source Pickup™ Noise Rejection Technology
  • Stereo Acoustic Echo Canceller supporting 2.1 or 2.2 CH System
  • Speech Detection and Buffer during System Stand-by
  • Voice Trigger and Wake on Voice, optional
  • On-chip 32-bit Digital Audio Processor
  • 18-bit Microphone ADC with 106 dB full path Dynamic Rangeeatures 1
  • Raw Audio Sample Rates: 8 ~96 kHz
  • 0.125 dB Analog Front End Gain Resolution
  • Independent Microphone Bias for low cross talk
  • Serial data interface (I2S/PCM)
  • USB Full Speed, 2.0 UAC compliant, Asynchronous Data Transfer
  • Asynchronous SRC and Sync Buffers
  • I2C and UART control interface
  • Serial EEPROM interface
  • Integrated DC/DC for Power Management
  • 9x9mm 169 BGA Package, ROHS compliant

 Technical Documents

Product BriefPBR-CX20865-001.pdfPBR-CX20865-001Far Field Voice Input Processor SoC
1/7/2013 3:12 PM

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