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PDF AD2403 Data sheet ( Hoja de datos )
| Número de pieza | AD2403 | |
| Descripción | Automotive Audio Bus A2B Transceiver | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Automotive Audio Bus
A2B Transceiver
AD2401/AD2402/AD2403/AD2410
A2B BUS FEATURES
Line topology
Single master, multiple slave
Up to 10 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
Control and status Information
I2C to I2C
Phantom power or local power slave nodes
Configurable with SigmaStudioTM graphical software tool
Qualified for automotive applications
ADDITIONAL TRANSCEIVER FEATURES
Configurable as A2B bus master or slave (AD2403/AD2410)
I2C interface
8-bit to 32-bit multichannel I2S/TDM interface
Up to 32 upstream channels or combination with up to
32 downstream channels
I2S/TDM or PDM microphone inputs
APPLICATIONS
Automotive audio communication link
Communication network for:
Microphones/speakers
Sensor/actuator
I2C peripherals
GENERAL DESCRIPTION
The Automotive Audio Bus (A2B®) provides a multichannel,
I2S/TDM link over distances of up to 10 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. It 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 allowing direct access of regis-
ters and status information on slave transceivers as well as
I2C to I2C communication over distance.
Complete technical specifications are available for the A2B
transceiver. Contact your nearest Analog Devices sales office to
complete the nondisclosure agreement (NDA) required to
receive additional product information
Table 1. Product Comparison Guide
Feature
Master capable
Functional TRX blocks
I2S/TDM support
PDM microphone inputs
Maximum node to node
cable length
AD2401 AD2402 AD2403 AD2410
No No Yes Yes
A only A + B A + B A + B
No No Yes Yes
4 Mics 4 Mics None 4 Mics
10 m 10 m 1 m 10 m
IOVDD DVDD PLLVDD
VOUT1 VIN VOUT2
A/BTRXVDD
SCL
SDA
IRQ/IO0
ADR1/IO1
ADR2/IO2
BCLK
SYNC
DTX[1:0]
DRX[1:0]
I2C
I2S/TDM
PDM
PLL
VREG1
®
VREG2
A2B
TRX B
(Towards
Last Slave)
DIAGNOSTICS
A2B
TRX A
(Towards
Master)
BP
BCM
BN
SWP
SENSE
AP
ACM
AN
MSTR
VSS
VSSN
Figure 1. Functional Block Diagram
A2B and the A2B logo are registered trademarks of Analog Devices, Inc.
Rev. SpD
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
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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