Key Features#

The VocalFusion® XVF3800 is a high-performance voice processor that is optimised for voice communications with the following key features.

Voice Processing#

  • Four PDM microphone interfaces

  • Digital signal processing pipeline

  • Full duplex Acoustic Echo Cancellation (AEC)

  • Fast tracking Beamformer with multiple beams

  • Dynamic Echo and Noise suppressor

  • Automatic Gain Control (AGC)

  • Limiter

  • Indication of Direction of Arrival (DoA)

Device Interfaces#

  • High speed USB2.0 compliant device supporting USB Audio Class (UAC) 2.0

  • Reference audio via I2S or USB

  • USB Endpoint 0 vendor specific device class based control interface

  • I2C or SPI control interfaces

Firmware Management#

  • Boot from QSPI Flash

  • Default firmware image for power-on operation

  • Update image delivered via USB DFU

  • Option to boot from a local host processor via SPI


  • 7 mm x 7 mm 60 pin QFN package

Power Consumption#

  • Typical core (VDD) power consumption: 345 mW (I2S) / 400 mW (USB)