TMS320C64x的PDT传输为共享同一数据总线的外部设备和外部存储器之间传输大容量的数据提供了高效的传输方式;而采用EDMA能使CPU从繁重的数据传输中解脱出来,使CPU可以进行更多的数据处理工作,从而更有效的提高系统的传输性能。通过一个应用实例,设计了基于PDT传输的实际接口电路,并通过CSL对EDMA参数进行了配置,完成了软硬件设计,并在实际项目中得到了应用,效果很好。 The PDT transfer of the TMS320C64x provides an efficient way to transfer large amounts of data between external devices sharing the same data bus and external memory. With EDMA, the CPU can be freed from heavy data transfers and the CPU can do more The data processing work, so as to effectively improve the system’s transmission performance. Through an application example, the actual interface circuit based on PDT transmission is designed, and the EDMA parameters are configured through CSL. The software and hardware design is completed and applied in practical projects, and the effect is very good.