一种基于SRAM型FPGA的配置芯片设计

A Design of Configure Chip Based on SRAM-type FPGA

随着设计工艺的飞速发展,SRAM型FPGA的规模也越做越大,对配置芯片的存储容量、配置速度提出了更高的要求。基于SRAM型FPGA,采用BPI接口和大容量FLASH,并通过JTAG接口转BPI接口的软核,代替传统配置芯片内部的JTAG模块,完成了基于SRAM型FPGA的配置芯片设计,其结构简单、芯片面积小、存储容量大、速度快,兼容性好。通过数字仿真波形分析和FPGA原型验证,验证了设计方法的可行性和正确性。

With the rapid development of the design process,the size of the SRAM-type FPGA is getting bigger and bigger,putting higher requirements on the storage capacity and the configuration speed of the configuration chip.In this paper,based on the SRAM-type FPGA,using high-capacity FLASH and BPI interface,and the soft core of JTAG interface to BPI interface through FPGA instantiation instead of the JTAG module of traditional configuration chip,the design of configure chip based on SRAM-type FPGA have been completed.This design has realized the simple design structure,small chip area,storage capacity,speed,compatibility.The feasibility and correctness of the design method is proved through the analysis of corresponding digital simulation waveform and FPGA prototype verification.