Conexant AudioSmart User manual

Connect the 3.5mm audio jack on the RPi3 (J7)
to LINE IN on the CX20921 evaluation board
(J25)
Connect J3 on the CX20921 evaluation board
(Line Out port labeled as HP) to a powered
speaker
Connect the microphone module to the
CX20921 evaluation board (J19)
Connect the audio path from micro USB (J1) to
USB port on RPi3
Conexant AudioSmart™ 2-Mic Development Kit
for Amazon AVS Quick Start Guide
Raspberry Pi3 is NOT included in the kit
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* Optimal performance is achieved when distance between two mics is 55mm
* Software tool (FCP Essential) will be provided for mic distance adjustment between 30mm to 120mm

Connect Ground (GND) at P2.pin15 from
CX20921 evaluation board to J8.pin14 on RPi3,
and GPIO1 at P2.pin14 from CX20921
evaluation board to J8.pin13 on RPi3
Connect the power supplies for both CX20921
evaluation board, (J10, +5V power supply
included) and RPi3 (J1). Switch the power
switch (SW3) to turn on the CX20921 evaluation
board. LED D6 (5VLED) will turn on when there is
power on the board.
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Go to https://github.com/alexa/alexa-avs-sample-app/wiki/Conexant2Mic-Raspberry-Pi
for information on setting up AVS on RPi3
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To verify the setup, please say “Alexa” followed by a
question or command
1. A green LED will light up if evaluation board is
working properly
2. A voice response will be heard if Raspberry Pi is
set up correctly with AVS
To learn more about Amazon Alexa Voice Service and
access the AVS API reference guide, visit:
https://developer.amazon.com/alexa-voice-service/
Proper speaker selection will enhance overall performance.
Please download “External Loudspeaker Guidelines and
Recommendation for Smart Speaker Applications” for additional
information.
Amazon, Alexa, and all related logos are trademarks of Amazon.com, Inc. or its affiliates