多处理器通信机制设计

Design of multiple processor communication mechanism

随着通信、多媒体及数字处理技术对片上系统处理及通信能力要求的不断提升,针对目前SOC设计中存在多处理器通信问题,集中阐述了共享存储器、mailbox,DMA和串口主从四种方式,探讨了多处理器通信机制.通过设计举例,详细的介绍了共享存储、DMA及串口主从三种通信方式在多处理器系统中的实现方法及实现原理.通过实际的测试,比较了以上三种方法的优缺点,为多处理器系统通信提供了实例,对类似设计具有一定的借鉴意义.

With the continuous requirements improvement on chip processing and communication capacity from communications, multimedia, digital processing technology, focusing on the problem of multiple processor communication in SOC design, the four kinds of communication methods, such as shared storage, mailbox, DMA, serial master-slave ~in multiple processor communication mechanism are researched in this paper. Through a designing case, the principle and implementation in three communication methods： shared-memory, DMA, serial master-slave methods, are introduced in details. By the actual test, the advantages and disadvantages of the above three methods are compared. It provides a useful case for multiple processor communication and it is reference for the similar design.