CAJ | 학술논문

基于 SRAM 的 FPGA 在高温下功耗较高,配置存储器时具有掉电易失性,且某些系统需要对 FPGA 进行在线升级以升级系统。针对这些需要,介绍一种使用 RAM 存储器作为配置码流载体,以 DSP 作为配置主控器实现基于 Flash工艺的 FPGA 在线编程方法。PC 通过 DSP 串口把 FPGA 配置码流下载至外部 RAM,DSP 的 GPIO 口驱动 FPGA 的JTAG 口成功实现了 Flash 的擦除、烧写以及 FPGA 在线升级。实验结果表明,系统能在150℃环境以较低功耗正常稳定工作,且该方法可靠性高、操作方便。
기우 SRAM 적 FPGA 재고온하공모교고,배치존저기시구유도전역실성,차모사계통수요대 FPGA 진행재선승급이승급계통。침대저사수요,개소일충사용 RAM 존저기작위배치마류재체,이 DSP 작위배치주공기실현기우 Flash공예적 FPGA 재선편정방법。PC 통과 DSP 천구파 FPGA 배치마류하재지외부 RAM,DSP 적 GPIO 구구동 FPGA 적JTAG 구성공실현료 Flash 적찰제、소사이급 FPGA 재선승급。실험결과표명,계통능재150℃배경이교저공모정상은정공작,차해방법가고성고、조작방편。
SRAM-based FPGA has higher power consumption at high temperature,and its memory configuration is invalid when power-fail occurs.Besides,FPGA needs to be upgraded in some systems.A in-system programming method for FLASH-based FPGA is realized by using RAM as the stream carrier of configuration code and DSP as master controller.Configuration code of FPGA is downloaded to external RAM through serial ports of DSP.The clearing and programming of Flash and in-system programming of FPGA are implemen-ted through driving FPGA′s JTAG interface by DSP′s GPIO.Experimental results show that the system can work stably at 1 50 de-grees.The method has high reliability and convenient operation.