激光告警中FPGA与DSP的高速数据传输

针对激光告警图像处理系统对于实时性要求高,要求数据快速传输,以及所要处理的数据量大的特点,将增强的直接存储器访问数据传输方式应用到图像数据传输的技术中。基于TI公司TMS320C6713 DSP芯片和XILINX公司XC2S200PQ208 FPGA芯片的图像处理系统,介绍了系统中FPGA芯片的时序逻辑控制,DSP外部存储器接口(external memory interface,EMIF)与FPGA的硬件接口设计,并着重描述了DSP与FPGA之间增强的直接存储器访问(enhanced direct memory access,EDMA)传输方式的配置和程序设计流程。传输过程不需要CPU干预就可实现数据在存储空间中的高速搬移,并且采用Ping-Pong缓存结构,从而使CPU可以在数据传输的同时进行数据处理,充分发挥出了DSP芯片的性能,为整个系统的实时性提供了有力保证。

High speed data transmission between FPGA and DSPSin laser warning

HighSrealStimeScapability, fastStransmission of data, largeSamountSofSdata areSmajorSchallengesSthatSthe laserSwarning image processingSsystemSisSfacing. The EDMASdata transmission modeSis applied to theSimage data transmissionStechnology. TheSimage processing system based onSDSP of TISTMS320C6713S and FPGA of XILINXSXC2S200PQ208S. Introduced theStiming logic controlSof FPGAS in the systemS, the design of hardware interface between external memory interfaceS(EMIF) and FPGA. EmphaticallySdescribes the configurationSand the program flowSof EDMA transmission mode between the DSP and FPGA. Transmission of data without CPU intervention in the storage space and it can realizeShigh speedSmoving of data. Using Ping-Pong buffer structure, which allows the CPU to transfer data at the same time for data processing. Give full play toSthe performance of the DSP. To provideSa strong guarantee for theSreal-time performance of the wholeSsystem.