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2393380_zh-CN
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我最近在做一个楼宇管理系统（BMS）项目，遇到了以下问题。 从 NXP 官方网站下载的公开 MC33664 数据手册中没有 MC33664 收发器的任何寄存器描述。此外，我下载的官方演示代码包也缺少访问和操作 MC33664 内部寄存器的任何例程。
TPL3 通信是否需要对 MC33664 的寄存器进行读/写访问？ 如果寄存器操作是必需的，请问有人可以分享一份完整的 MC33664 数据手册，其中包含完整的寄存器规格，以及一个实现 MC33664 寄存器读/写逻辑的示例演示项目吗？非常感谢！
您好，
您下载的数据表已经是完整的文档了。MC33664 不包含任何内部寄存器，因此 TPL 通信不需要寄存器读/写操作。
该设备可用作透明的TPL物理层收发器。它将 MCU SPI 发送流转换为 TPL 脉冲编码信号，并将接收到的 TPL 流量转换回 SPI 信号。因此，与 TPL 网络上的设备通信是通过 SPI 接口发送和接收 TPL 帧来实现的。
您指的是较新的 MC33665A 网关设备，它确实包含内部寄存器、消息队列、路由功能和寄存器访问协议。因此，MC33665A 的完整数据手册（根据保密协议以安全文件形式提供）包含详尽的寄存器描述。
作为Gen1 SDK的一部分，我们提供了适用于 MC33664 和 MC33665 的软件设备驱动程序。至于 MC33664，MCU 上的 CDD 层负责处理诸如引脚定时以执行唤醒序列、同时配置和管理 MCU 上的两个独立的 SPI 模块、中断路由等任务。
BRs，托马斯
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