基于互连的一种FPGA最优功耗延时积设计

New design method for the optimal energy delay product ofFPGA based on the interconnect

为了有效地解决困扰现场可编程门阵列发展的功耗延时积问题,采用集成电路互连的分段式结构和低压摆电路,提出了一种基于互连的最优功耗延时积现场可编程门阵列设计方法.对于产生传输线效应的现场可编程门阵列互连,通过优化互连的段数,在互连最外面的输入端和输出端分别连接低压摆电路的驱动部分和接收部分,在内部的每段互连之间插入最优尺寸的缓冲部分.理论与模拟表明,用这种方法设计的现场可编程门阵列能使功耗延时积减小近一个数量级,同时较好地保持现场可编程门阵列的面积性能.

With the segmentation structure and low-swing circuit of the integrated circuit interconnect, an optimal design method is developed for solving the challenge of the FPGA energy delay product. Optimizing the segmentation number of the FPGA interconnect with transmission line effects, the driving unit and receiving unit of the low-swing circuit are respectively connected to the input and output of the interconnect, and optimal size repeaters are inserted in the segmented interconnect. Both theoretical and experimental results show that the improvement of the FPGA energy delay product with this new technique is about an order of magnitude when compared to existing commercial architectures while keeping the good area performance of FPGA.