ADAA2457

预发布

100Mbps Automotive Audio Bus (A2B 2.0) Transceiver with OASPI Interface

数据手册 (Rev. PrE) 产品选型表
产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
Viewing:

概述

  • A2B 2.0 BUS FEATURES
    • Line topology
      • Single main node, up to 10 subordinate nodes
      • Up to 15 m between nodes and up to 50 m overall cable length
    • Clock synchronous multichannel I2S/TDM data over distance
      • 119 upstream and 119 downstream channels per link (for 48 kHz sampled 16-bit channels)
      • Individual 16, 24, or 32-bit channels
      • Phase-aligned sampling at all nodes
      • Low latency node to node communication
    • Asynchronous data over distance
      • 10 Mbps Ethernet Layer-2 A2B MAC-PHY
      • unicast/multicast/broadcast
      • SPI to SPI, SPI to I2C
      • I2C to I2C
      • Mailbox message exchanges up to 126 bytes
      • GPIO to GPIO
  • ADAA2457 TRANSCEIVER FEATURES
    • Configurable as A2B bus main node or subordinate node
    • Node descriptor/one-time programmable (OTP) memory
    • Auto-discovery
    • Line diagnostics per link without bias
    • Wake-on-A2B activity
    • Clock output on subordinate nodes without bus operation
    • EMC, ESD optimized for automotive applications
  • ADAA2457 INTERFACE FEATURES
    • Ethernet interface via OA SPI
    • 8 configurable serial IO (SIO) (I2S/TDM/PDM) data pins
      • 2 SIO (I2S/TDM) clock domains
    • I2C and SPI interfaces
    • 4 PWM outputs
    • 2 general-purpose ADC inputs
    • Up to 16 GPIOs (multiplexed onto other pins)
    • 4-channel ASRC input and output

The Automotive Audio Bus A2B® 2.0 transceivers (ADAA245x) quadruple the available bus bandwidth relative to existing A2B 1.01 devices making them particularly well suited for high definition (HD) audio transport in ECU connectivity applications. ADAA245x devices are compatible with existing A2B 1.0 cabling/connector infrastructures and fully supported by SigmaStudio+®, a unified software framework from Analog Devices. Additionally, the ADAA245x family and future A2B 2.0 devices can easily be connected to A2B 1.0 branches using their integrated, industry-standard I2S, I2C, and SPI interfaces.

A2B provides a multichannel, multistream digital audio link over distances of up to 15 m between nodes. It embeds bidirectional synchronous pulse code modulation (PCM) data (for example, digital audio from I2S/TDM interface), clock, and synchronization signals, as well as asynchronous data (for example, Ethernet packets) onto a single differential wire pair. A2B supports a direct point to point connection or line topology with multiple, daisy-chained nodes at different locations that can contribute and/or use time division multiplexed channel content.

A2B is a single main node, multiple subordinate node system where the transceiver at the host controller is part of the main node. The main node generates clock, synchronization, and framing for all subordinate nodes. The main A2B transceiver is programmable over a control bus (I2C or SPI) for configuration and read back. An extension of this control bus is embedded in the A2B data stream, which grants direct access to registers and status information on subordinate transceivers, as well as I2C to I2C, SPI to SPI, SPI to I2C and GPIO to GPIO communication over distance.

The transceiver can connect directly to general-purpose digital signal processors (DSPs) or microprocessors, field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), microphones, accelerometers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and codecs through a multichannel I2S/TDM interface. It also provides a pulse density modulation (PDM) interface for direct connection of up to four PDM digital microphones. The transceiver’s pulse width modulated (PWM) outputs can control LED drivers or voltage regulators. GPIO status and control is directly conveyed between nodes.

Software

Please contact your local ADI sales representative to request the required A2B 2.0 software.

APPLICATIONS

  • Distributed audio systems
  • Personal audio zones
  • Rear seat entertainment
  • Remote AM/FM/DAB/HD tuner modules
  • In-car telematics and emergency call system
  • Overhead console
  • High definition (HD) audio
ADAA2457
100Mbps Automotive Audio Bus (A2B 2.0) Transceiver with OASPI Interface
ADAA245x Functional Block Diagram
添加至 myAnalog

将产品添加到myAnalog 的现有项目或新项目中（接收通知）。

创建新项目
提问

参考资料

数据手册 1

了解更多
添加至 myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

创建新项目

评估套件

eval board
schematic 1
schematic 2
schematic 3
A2B-Analyzer-HP

Next generation A2B Node Emulator and Bus Traffic Monitor- Designed to support A2B1.0 and A2B2.0 transceivers, currently supports A2B2.0 transceivers.

立即购买 更多内容

特性和优点

  • Key Product Features
    • Swappable Transceiver Modules (Personality Modules) - scalable architecture designed for all A2B transceiver versions (initial release supports A2B2.0 transceivers)
    • Node Emulator A2B 2.0
      • ADAA245x — Main/Sub node
    • A2B 2.0 Bus Traffic Monitor
    • Simultaneous Monitor and Emulator operation
    • Selectable audio interface
      • Analog I/O
      • Digital SPDIF I/O
      • USB2.0 Audio Class
      • Streaming from/to PC
    • Intuitive Graphical User Interface
      • Supported on Windows, Linux, MacOS
    • Software Development Kit (SDK)
  • Key Benefits
    • Powerful, multi-function HW
    • Supports Rapid development
    • Software push notifications
    • Fully compatible with SigmaStudio+
    • Software in Loop (SIL) tests with SDK
    • Usage in conjunction with Audio Precision Analyzer

    产品详情

    ADI A2B Analyzer HP is a next-generation hardware platform designed to accelerate the design, debug, and validation of A2B networks. Featuring a hot-swappable Personality Module architecture, it is built to support all A²B transceiver families, including A2B 1.0 (AD242x/AD243x) and A2B 2.0 (ADAA245x).

    Currently, the Analyzer HP supports A2B 2.0 (ADAA245x) transceivers, with future updates planned to extend compatibility.

    Using the A2B Analyzer Studio software, the Analyzer HP can be configured as an active bus emulator, a bus traffic monitor, or both.

    1. A2B Analyzer HP - Hardware Highlights

      • Swappable Personality Modules for true node emulation
      • USB-C Powering
      • Variety of audio input/output interfaces
      • High Speed USB Interface for audio/control communication
      • High Speed Ethernet Interface for audio/control communication (Support Planned in future release)
      • Wifi/Bluetooth Support for Remote Control/triggering options (Support Planned in future release)

    2. A2B Analyzer Studio - Software Highlights

      • GUI
        • Intuitive GUI for device configuration and control
        • No licensing requirements
        • Capture/playback of Real-time audio streams and bus traffic on PC
        • Inject test tones/streams from PC on to the bus for debug
        • A2B Network/node management and diagnostics
        • Audio streaming over USB using ASIO/ALSA/CoreAudio
        • Support for Windows, Linux, MacOS
      • SDK
        • Software Development Kit (SDK) to create custom applications using C/C++ and Python

      The tool can be used in the following scenarios:

        • Engineering – Design & Development
        • Test & Validation
        • Pre-production Testing
        • CE/FCC certification process is underway

    eval board
    schematic 4
    schematic 5
    schematic 6
    ADAA245X-EV-A1CA

    A2B 2.0 迷你模块

    立即购买 更多内容

    特性和优点

    • ADAA2457 A2B 2.0 收发器
    • 灵活的音频接口–支持多通道 I2S/TDM/PDM，具有两个独立的时钟域和 4 通道 ASRC 输入/输出。
    • 多功能连接——通过 OA SPI 实现以太网，支持 10 Mbps 二层 A2B MAC-PHY，支持单播、组播和广播。
    • 可配置 I/O–最多 16 个复用 GPIO、8 个串行数据引脚、4 个 PWM 输出、2 个 ADC 输入，以及 I²C 和 SPI 接口。
    • 主节点/从节点操作–支持两种节点类型的本地电源配置。
    • 分线板设计–包括两个 24 针接头，用于定制硬件接口和快速原型制作。
    • 高速 SPI 到 SPI 通信–可与外部基于 SPI 的设备无缝集成。
    • 集成电源管理–两个 MAX20075D 600mA 降压开关稳压器，实现稳定运行。
    • 诊断状态指示灯–用于指示电源、GPIO/PWM 活动、中断和系统状态的视觉指示器。 &
    • 100 针连接器–设计用于轻松与 SOM 载板和 A2B 基板连接。
    • 板载 EEPROM–存储配置数据和设备标识。

    产品详情

    ADAA245X-EV-A1CA 迷你模块是一款紧凑、经济高效的扩展板，旨在加速汽车音频总线 (A2B®) 系统的开发和评估。它通过 100 针连接器与 DSP 载板和音频底板无缝连接，并通过 32 针（0.1 英寸）接头支持自定义硬件集成。该电路板既可作为主节点，也可作为从节点，并具有灵活的本地电源配置，以适应各种系统拓扑结构。

    在 A2B 网络中，位于主机控制器的主收发器为所有从属节点生成时钟、同步和帧信号。它可以通过 I²C 或 SPI 进行编程，控制总线嵌入在 A2B 数据流中，从而可以直接访问下级收发器寄存器和任何连接的外设。

    ADAA245X-EV-A1CA 支持通过 I²C、SPI、OA-SPI 和具有两个独立时钟域的多通道 I²S/TDM 接口直接连接到 PDM 麦克风和各种外围设备。其他功能包括多达 16 个复用 GPIO、4 个 PWM 输出、2 个 ADC 输入以及用于异步采样率转换的 4 通道 ASRC 输入/输出。集成的 MAX20075D 降压稳压器提供稳定的电源，而板载诊断 LED 提供电源、状态、GPIO/PWM 活动和中断的视觉反馈。

    该电路板是模块化评估平台的一部分，支持各种 A2B 配置，使开发人员能够验证系统在多种使用场景下的性能。

    注意：ADAA245x-EV-A1CA 评估板既可以单独使用，也可以与 ADAA24xx-EV-B2BX 板组合使用，以模拟智能 A2B 连接节点。

    eval board
    schematic 7
    schematic 8
    schematic 9
    ADAA24XX-EV-B2BX

    SigmaDSP 音频底板

    立即购买 更多内容

    特性和优点

    • A2B MINI 连接器接口–通过 100 针 A2B MINI 连接器直接连接到 ADAA245X-EV-A1CA（和其他 MINI 板）。
    • 启动就绪 EEPROM–支持初始化和配置存储。
    • USBi 接口–通过 USB 实现 I2C、SPI 或 OA-SPI 外围设备配置。
    • ADAU1452 SigmaDSP 处理器–包括辅助 ADC 分线器、光纤 SPDIF 输入/输出（标准连接器）、状态 LED 和 I2S/TDM 分线接头（带两个多用途引脚）。
    • ADAU1761 音频编解码器–通过 3.5mm 立体声插孔提供 DAC 输出和 ADC 输入。
    • 动态编解码器控制–MAX4948 6 通道 SPDT 开关选择控制源：ADAU1452 或 A2B MINI 连接板。
    • 强大的电源架构——可接受 12V 圆柱形插孔输入；包含两个 MAX77504 稳压器，分别用于 1.8V 和 3.3V IO 电源轨。
    • 支持唤醒功能的电源–板载稳压器可通过来自 A2B MINI 连接板的外部 WAKEUP 信号激活。

    产品详情

    ADAA24XX-EV-B2BX Sigma-DSP 音频基板是一个功能丰富的平台，设计用于通过专用的高速 100 针 A2B MINI 连接器与 ADAA245X-EV-A1CA（以及其他 A2B MINI 板）连接。它作为汽车音频总线（A2B®）系统中的音频处理、外围设备配置和电源管理的中央枢纽。

    其核心是 ADAU1452 SigmaDSP 处理器，提供先进的音频处理功能，并带有辅助 ADC、光纤 SPDIF 输入/输出、状态 LED 和 0.1 英寸接头，用于连接 I2S/TDM 信号和多用途控制引脚。该电路板还包含 ADAU1761 CODEC，可通过标准的 3.5mm 音频插孔提供高质量的 DAC 输出和 ADC 输入。

    MAX4948 6 通道 SPDT 开关可动态选择 CODEC 控制器——可以是板载 DSP，也可以是通过 A2B MINI 接口连接的外部板。接口板可控制额外的 LED，用于状态指示或信号显示。

    通过 USBi 接口简化了外围设备配置，允许访问 I2C、SPI 和 OA-SPI 设备。该电路板还配备了一个可启动的 EEPROM，用于初始化和配置存储。

    电源通过 12V 圆柱形插孔提供，板载稳压由双 MAX77504 电源提供，可选择 1.8V 和 3.3V IO 电压。这些调节器可以通过 WAKEUP 信号进行外部启用，从而实现来自外部的同步电源控制。

    注意：ADAA24XX-EV-B2BX 评估板必须与 ADAA245x-EV-A1CA 评估板结合使用，才能模拟智能 A2B 连接节点。

    A2B-Analyzer-HP
    Next generation A2B Node Emulator and Bus Traffic Monitor- Designed to support A2B1.0 and A2B2.0 transceivers, currently supports A2B2.0 transceivers.
    A2B ANALYZER HP Evaluation Board Angle View A2B ANALYZER HP Evaluation Board Side1 View A2B ANALYZER HP Evaluation Board Side2 View
    ADAA245X-EV-A1CA
    A2B 2.0 迷你模块
    ADAA245X-EV-A1CA Evaluation Board Photo Angle View ADAA245X-EV-A1CA Evaluation Board Photo Top View ADAA245X-EV-A1CA Evaluation Board Photo Bottom View
    ADAA24XX-EV-B2BX
    SigmaDSP 音频底板
    ADAA24XX-EV-B2BX Evaluation Board Angle View ADAA24XX-EV-B2BX Evaluation Board Top View ADAA24XX-EV-B2BX Evaluation Board Photo Bottom View

    最新评论

    需要发起讨论吗？ 没有关于 ADAA2457的相关讨论？是否需要发起讨论？

    在EngineerZone®上发起讨论

    近期浏览