CX20921

Product Overview

The CX20921 is a high-performance Far Field Voice Input Processor SoC. The CX20921 is the first product in this category with an integrated voice trigger engine that also supports the low system power WoV function. The device includes two 24-bit microphone ADCs, a programmable dual core 32-bit hardware DSP, and integrated power management. Combined with Conexant’s AudioSmart Far Field Voice Processing Algorithms, the CX20921 is the ideal turnkey solution for adding far field voice control, voice search, and VoIP functionalities to SmartTV, STB, gaming consoles, and other Smart appliances.

FeaturesCX20921CX20924
Host InterfaceI2S/I2C/USB/UART/SPII2S/I2C/USB/UART/SPI
Digital Audio Bridge Support2 I2S in, 3 I2S out, 1 SPDIF in2 I2S in, 3 I2S out, 1 SPDIF in
EfficiencyLow-Power, Always-Listening ModeLow-Power, Always-Listening Mode
USB2.0 FS2.0 FS
On-Chip Signal ProcessingProgrammable CAPE DSPProgrammable CAPE DSP
Analog Stereo Inputs20
ADC SNR106N/A
Digital Microphone Inputs24
PWM Outputs11
GPIOs22
Package60 QFN60 QFN

Applications

Voice Interactive Smart TVs / STBs

Voice Controlled Smart Appliances

Telepresence

Game Console