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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.
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车载网络通信
随着机动车电动化、数字化的加速，车载网络通信的平台配置也在发生变化。东芝将为客户提供符合时代需求的车载网络通信器件。车载通信协议标准CXPI适用于方向盘开关、照明开关等车身系统应用网络，或区域ECU接口的高速响应。此外，多路通信的方式减少了线束量，有助于减轻车身自重。
什么是CXPI？
CXPI（时钟扩展外设接口）是车载通信协议国际标准（ISO 20794）。
该标准为下一代车载子网的建立提供了多路传输的车内通信方法，以减少HMI（人机接口）设备线束量，有助于减轻车身自重。
CXPI在指令和响应之间双向通信、大容量数据传输和高速响应方面优于LIN（局域互联网络）。
应用示例
- 方向盘开关
- 组合开关
- 照明开关
- 门锁、车门后视镜
- 电动座椅，座椅加热器
- 车身系统应用
CXPI的定位和优势
LIN通信已广泛应用于传统的汽车车身应用中。不过，LIN通信采用从指令节点到响应节点的周期性传输和响应，因此很难应用于开关等需要响应速度的应用。然而，CXPI可以从指令节点或响应节点发送。
此外，与LIN相比，CXPI是一种可以一次性处理大量数据的协议，因此可以高效地发送和接收来自各种应用的数据。
产品线
| 产品型号 | 封装 | 功能 | 应用 | 特性 | 睡眠模式耗电 | 最大通信速度 | 电源 | 可靠性测试等级 |
|---|---|---|---|---|---|---|---|---|
| P-SOP8-0405-1.27-002 | 符合CXPI（车载通信协议标准）的物理层接口 | CXPI物理层接口适用于以下应用（驱动器接收器）
|
|
5 μA（典型值） | 20 kbps | BATT | AEC-Q100认证中 | |
| P-VQFN28-0606-0.65-003 | 符合CXPI标准的硬件逻辑接口IC（仅适用于应答节点） |
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10 μA（典型值） | 20 kbps | BATT | AEC-Q100认证中 |
*TB9032FNG已通过由第三方进行的CXPI物理层测试（ISO20794-7［8物理层一致性测试计划（PMA－PS独立类型）］）*1）。
*1) Advanced Data Controls Corp.
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