Infineon A2B User Manual

User guide
Infineon A²B evaluation kit
Evaluation kit to experiment with different system configurations of
XENSIV digital MEMS microphones, using the A²B interface in
combination with the AURIX microcontroller

About this document

Scope and purpose
This user guide describes the usage and basic operation of the A²B evaluation kit. It describes the parts of the
kit and includes schematic and pinout of the individual boards.
Intended audience
Hardware and software engineers, evaluating Infineon digital XENSIV™ MEMS microphones.
Evaluation kit
This evaluation kit allows multi microphone audio readout and processing for many applications (e.g. siren
detection, beam forming, in-cabin-communication, active noise cancellation, ...). It can be used by customers
to develop their own algorithms and experiment with different numbers of microphones in different locations
inside or outside of the car. With its magnetic microphone slave modules, it allows easy mounting on any metal
surface.
The microphone slave modules are equipped with protective membranes in front of the microphone sound
ports and silicon gaskets on the cable feed throughs. This allows real driving test and the data collection even
under dusty and slightly wet conditions.
It also shows how to connect the Infineon digital XENSIV™ MEMS microphones to an A²B transceiver and how to
interface to the AURIX™ microcontroller.
Note: PCB and auxiliary circuits are NOT optimized for final customer design.
A²B evaluation kit with the ECU master unit and 4 microphone slave modules.
User guide
www.infineon.com
Please read the sections "Important notice" and "Warnings" at the end of this document Rev.1.10
2022-05-05