FPGA双端口存储器映射优化算法

Optimization Algorithm of Dual-port Memory Mapping on FPGA

FPGA存储器映射算法负责将用户的逻辑存储需求映射到芯片中的分布式存储资源上实现。前人对双端口存储器的映射算法研究相对较少,成熟的商业EDA工具的映射结果仍有不少改进空间。该文分别针对面积、延时、功耗这3个常用指标,提出一种双端口存储器映射的优化算法,并给出了具体配置方案。实验表明,在面向简单存储需求时,与商用工具Vivado的映射结果一致;在面向复杂存储需求时,面积优化和功耗优化的映射结果对比商用工具改善了至少50%。

FPGA memory mapping algorithm utilizes distributed storage resources on chip and cooperates with some auxiliary circuits to realize the different needs of users in designing logical storage functions.Previous studies on dual-port memory mapping algorithm are relatively few.There is still much space for improvement in the mapping results by mature commercial EDA tools.An optimization algorithm of dual-port memory mapping is proposed for area,delay and power consumption,and a specific configuration scheme is given.Experiments show that when facing simple storage requirements,the mapping results are consistent with those of commercial tools;when facing complex storage requirements,the mapping results of area optimization and power optimization are improved by at least 50%compared with commercial tools Vivado.