基于Flash和JTAG接口的FPGA多配置系统

FPGA Multi-configuration System Based on Flash and JTAG Interface

针对需要切换FPGA器件的配置以实现不同功能的特殊应用场合,提出了一种使用大容量的Flash存储器作配置码流载体的FPGA多配置系统。该系统采用传输速度快的JTAG接口提高了配置码流的烧写速度,采用并行从模式减少了FPGA器件配置时间,并利用串口通信实现了配置码流的在线切换。应用结果表明,该系统操作方便,可靠性高,实现成本低,通用性好。

To meet the need of special application of switching the FPGA configuration bit stream to achieve different functions, research ers design an FPGA multi-configuration system using mass Flash memory as bit stream carrier. It has a higher speed in the programming of configuration bit stream due to the use of JTAG interface and less time for the FPGA configuration through slave SelectMap mode. Meanwhile, it achieves the in system configuration bit switch through the serial communication. The practical application shows that this system has easy handing, well performance, low cost and general purpose.