Design Of Multi-channel Storage System Based On PCI Express

With the continuous development of computer technology,the complexity of the digita l systems are increasing.In the multi-channel data acquisition,multi-channel satellite transmission field,radar data transmission,the storage and transmission of high-speed data put forward higher requirements.PCIE bus as the third generation of IO bus technology,because of its good transport high-speed transmission performance,as well as point to point transmission structure and the height of the PCI bus compatible,high-speed transmiss io n systems become an important technology.Due to the increasing complexity of the digita l system,people with high-speed storage acquisition and transmit multiple data requests,this paper presents a design multiplexed storage system based on the PCIE.In this paper,based on the embedded PCIE nuclear Xilinx Virtex6 FPGA based on the acceptance of fiber optic transmission modules to multiple network data path to DDR3 as a large cache of data,via DMA operation multiple high-speed data transmission to the system memory and subsequent processing,transmission speeds of up to 1450 MB / s,mainly include :1.Firstly,introducte the research background,the significance and the key technologyused.2.According to the system function,the FPGA section of this chapter gives detailedfunctional division and realized PCIE functions.FPGA logic portion is mainlydivided three modules,PCIE modules,DDR3 ping-pong cache module,DMAcontrol module.3.Functionality and performance of the entire system be tested by Chipscopinterrogation signal,ensure that the system implement the corresponding function atthe natural frequency,the feasibility of the system design.