DESCRIPTION

· A2B and the A2B logo are registered trademarks of Analog Devices, Inc.

· Automotive Audio Bus A2B Transceiver models include AD2420(W), AD2426(W), AD2427(W), AD2428(W), and AD2429(W).

· The document is Rev. C and includes feedback information.

· Analog Devices provides information believed to be accurate but assumes no responsibility for its use or patent infringements.

· Specifications may change without notice, and no patent licenses are granted implicitly.

· Trademarks and registered trademarks are owned by their respective owners.

· Contact: One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 U.S.A. Tel: 781.329.4700.

· ©2021 Analog Devices, Inc. All rights reserved.

FEATURES

· Line topology with single master and multiple slaves.

· Supports up to 15 m between nodes and up to 40 m overall cable length.

· Synchronous data communication over distance.

· Multichannel I2S/TDM to I2S/TDM with synchronous, phase-aligned clock in all nodes.

· Low latency slave to slave communication.

· Control and status information via I2C to I2C, GPIO, and interrupt.

· Bus power or local power for slave nodes.

· Configurable with SigmaStudio graphical software tool.

· AEC-Q100 qualified for automotive applications.

· Configurable A2B bus master or slave operation.

· I2C interface and 8-bit to 32-bit multichannel I2S/TDM interface.

· Programmable I2S/TDM data rate with up to 32 upstream and downstream channels.

· PDM interface with programmable PDM clock rate.

· Up to 4 high dynamic range microphone inputs.

· Simultaneous reception of I2S data with up to 4 PDM microphones.

· Unique ID register for each transceiver.

· Crossover or straight-through cabling.

· Programmable settings to optimize EMC performance.

APPLICATIONS

· Audio communication link.

· Microphone arrays and beamforming.

· Hands-free and in-car communication.

· Active and road noise cancellation.

· Audio/video conferencing systems.