Abstract: This paper analyzes the features of communication in multi-processor chipset and PCI communication. It designs and implements PCI bridge controller in cut-through communication. The frequency of the controller is up to 66 MHz after placing and routing in FPGA, and it can effectively hide the delay of performance brought by burst transfer and delay read in PCI protocol in multi-processor cut-through communication. The PCI controller is used in Godson multi-processor system.

Key words: PCI bridge controller, multi-processor, chipset, cut-through

摘要： 分析了多处理器芯片组内通信和PCI通信的特点，设计并实现了在切入通信机制下的PCI桥控制器，该控制器在FPGA布局布线后可以达到66 MHz，有效隐藏PCI协议中的突发传送和读延迟机制给多处理器切入通信带来的性能损耗。该控制器已稳定运行在龙芯多处理器系统中。

关键词: PCI桥控制器, 多处理器, 芯片组, 切入

CLC Number: 

• TP302