论文部分内容阅读
片上系统在性能和功能上的突破性进展带来了新的挑战,包括大量IP模块之间的有效互连。虽然前人已经研究并实现了多种基于共享总线的多通道平行访问方案,但是当同一个IP块被多个通道同时访问时仍然存在数据传输的瓶颈。针对经常引起资源冲突的IP块,提出了一个基于时分复用的互连电路。该电路在同一个IP块被同时访问时重新安排传输信息,以时分复用的方式分配有限的资源。它将实现多个传输通道并行访问同一个IP核时不引入额外的延时,且对IP核是透明的。最后,在双层AHB总线系统的基础上实现了该电路。
Breakthroughs in performance and functionality on the system-on-chip have created new challenges, including the efficient interconnection of a large number of IP blocks. Although many kinds of multi-channel parallel access schemes based on shared bus have been researched and implemented, there is still a bottleneck of data transmission when the same IP block is accessed by multiple channels at the same time. For IP blocks that often cause resource conflicts, an interconnection circuit based on time division multiplexing is proposed. The circuit rearranges the transmission of information when the same IP block is simultaneously accessed, allocating limited resources in a time division multiplexed manner. It will enable multiple transmission channels to access the same IP core in parallel without introducing additional delay and is transparent to the IP core. Finally, the circuit is implemented on the basis of double AHB bus system.