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Overview
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.
| 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 |
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
Design & Integration Files (1)
Product Highlight (1)
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