Datasheet > AD2422W

AD2422W

更新时间： 2024-11-10 01:14:59

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
2页	193K
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Automotive Audio Bus A2B Transceiver

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AD2422W 数据手册



Automotive Audio Bus A²B Transceiver

Data Sheet

AD2421W/AD2422W/AD2425W

A2B BUS FEATURES

GENERAL DESCRIPTION

The Automotive Audio Bus (A²B^®) provides a multichannel,

I²S/TDM link over distances of up to 15 m between nodes. It

embeds bidirectional synchronous data (for example digital

audio), clock, and synchronization signals onto a single differ-

ential wire pair. A²B supports a direct point to point connection

and allows multiple, daisy-chained nodes at different locations

to contribute or consume time division multiplexed channel

content. A²B is a single-master, multiple-slave system where the

transceiver chip at the host controller is the master. The master

generates clock, synchronization, and framing for all slave nodes.

The master A²B chip is programmable over a control bus (I²C)

for configuration and read back. An extension of this control

bus is embedded in the A²B data stream, which grants direct

access of registers and status information on slave transceivers

as well as I²C to I²C communication over distance.

Line topology

Single master, multiple slave

Up to 15 m between nodes and up to 40 m overall cable

length

Communication over distance

Synchronous data

Multichannel I²S/TDM to I²S/TDM

Clock synchronous, phase aligned in all nodes

Low latency slave to slave communication

Control and status information I²C to I²C

GPIO over distance

Phantom power or local power slave nodes

Configurable with SigmaStudio graphical software tool

Qualified for automotive applications

ADDITIONAL TRANSCEIVER FEATURES

Configurable as A²B bus master or slave (AD2425W)

I²C interface

Table 1. Product Comparison Guide

Feature

AD2421W AD2422W AD2425W

8-bit to 32-bit multichannel I²S/TDM interface

I²S/TDM/PDM programmable data rate

Up to 32 upstream and 32 downstream channels

PDM inputs for 4 high dynamic range microphones

Master capable

Functional TRX blocks

I²S/TDM support

Yes

A only

A + B

Yes

PDM microphone inputs 4 mics

4 mics

15 m

4 mics

15 m

APPLICATIONS

Maximum node to node 15 m

cable length

Automotive audio communication link

Active noise cancellation

Microphone arrays for hands free and in car communication

FUNCTIONAL BLOCK DIAGRAM

IOVDD DVDD

PLLVDD

VOUT1 VIN VOUT2

ATRXVDD/BTRXVDD

SCL

SDA

IRQ/IO0

A B

PLL

VREG1 VREG2

TRX B

BCM

(Towards

I C

Last Slave)

ADR1/IO1/CLKOUT1

ADR2/IO2/CLKOUT2

SWP

SENSE

DIAGNOSTICS

BCLK

SYNC

DTX0/DTX1

DRX0/DRX1

ACM

A B

I S/TDM

PDM

TRX A

(Towards

Master)

IO7

VSS

VSSN

The A²B and the A²B logos are registered trademarks of Analog Devices, Inc.

Rev. SpB

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 U.S.A.

Tel: 781.329.4700

Technical Support

www.analog.com

中文翻译

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与AD2422W相关器件

型号	品牌	获取价格	描述	数据表
AD2425W	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2426	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2426BCPZ	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2426KCPZ	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2426W	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2427	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2427BCPZ	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2427KCPZ	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2427W	ADI	获取价格	Automotive Audio Bus A2B Transceiver
AD2428	ADI	获取价格	Automotive Audio Bus A2B Transceiver

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