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AD2428W Datasheet(PDF) 1 Page - Analog Devices |
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AD2428W Datasheet(HTML) 1 Page - Analog Devices |
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1 / 38 page  A2B and the A2B logo are registered trademarks of Analog Devices, Inc. Automotive Audio Bus A2B Transceiver AD2420(W)/AD2426(W)/AD2427(W)/AD2428(W)/AD2429(W) Rev. B 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 ©20 20 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com A2B BUS FEATURES Line topology Single master, multiple slave Up to 15 m between nodes and up to 40 m overall cable length (see Table 9) Communication over distance Synchronous data Multichannel I2S/TDM to I2S/TDM Synchronous clock, phase aligned in all nodes Low latency slave to slave communication Control and status information I2C to I2C GPIO and interrupt Bus power or local power slave nodes Configurable with SigmaStudio graphical software tool AEC-Q100 qualified for automotive applications A2B TRANSCEIVER FEATURES Configurable A 2B bus master or slave operation I2C interface 8-bit to 32-bit multichannel I2S/TDM interface Programmable I2S/TDM data rate Up to 32 upstream and 32 downstream channels PDM interface 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 Beamforming Hands free and in car communication Active and road noise cancellation Audio/video conferencing systems Figure 1. Functional Block Diagram DTX0/IO3 IRQ/IO0 SDA SCL ADR1/IO1 IOVDD BCM AP ACM BN DVDD BTRXVDD VSS SWP VIN ADR2/IO2 ATRXVDD AN BP A2B TRX B (Towards Last Slave) SENSE DIAGNOSTICS PDMCLK/IO7 A 2B TRX A (Towards Master) DTX1/IO4 DRX0/IO5 DRX1/IO6 BCLK SYNC VSSN VREG1 PLL PLLVDD VOUT1 VREG2 VOUT2 I2S/TDM PDM I2C |
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