Overview

Features and Benefits
Product Details

Features and Benefits

AD2428W Automotive Audio Bus A²B^® Transceiver
- A²B slave operation
- Powered over A²B bus
Four PDM microphone inputs (INMP621)
GPIO LED

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.

Product Details

An Automotive Audio Bus (A²B^®) system consists of a single master and at least one slave, where the transceiver at the host controller is the master. The master transceiver generates clock, synchronization, and framing for all slave nodes and is programmable over a control bus (I²C) for configuration and readback. An extension of this control bus is embedded in the A²B data stream, which enables the host to directly access slave transceiver registers and any I²C-connected peripherals on slave nodes. Transceivers can connect directly to PDM microphones and to numerous peripherals via I²C and a multichannel I²S/TDM interface. Finally, the transceiver also supports an A²B bus powering feature, where the master node supplies voltage and current to the slave nodes over the same daisy-chained, twisted pair wire cable as used for the communication link, thus eliminating the need for a power supply on bus-powered slave nodes. Due to the numerous configurations that are possible for a given A²B system, there are several evaluation platforms that can be used in combination to verify system operation, as summarized in the table below.

Product Comparison Guide
A²B Evaluation Board	Master/Slave	Power Supply	I²S/TDM	PDM Mics
EVAL-AD2428WD1BZ	Master/Slave	Local	Yes	3
EVAL-AD2428WB1BZ	Slave	Bus	Yes	2
EVAL-AD2428WC1BZ	Slave	Bus	No	4
EVAL-AD2428WG1BZ	Slave	Local	Yes	0
ADZS-AD2428MINI	Master/Slave	Local/Bus	Yes	0

Please contact your local ADI sales office or authorized ADI product distributor to receive additional product information and technical support.

Markets & Technology

Applicable Parts

Package Contents

EVAL-AD2428WC1BZ board
1.8m twisted-pair CAT5e-rated cable with DuraClik^™ connectors

Documentation

Software

View All (2)
Software Development Tools (2)

Software Development Tools

A²B^® Software

A²B network design tool and embedded software stack that allows audio network designers to graphically design an A²B network and deploy it into an embedded platform.

SigmaStudio®

Graphical development tool for programming, development, and tuning software for ADI DSP audio processors and A²B^® transceivers.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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