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Tag Archives: fpga
About xilinx fpga bit, prom mcs, spi mcs.
Most of time I used impact to generate MCS from BIT, but it is too complex, I think too many step is useless. I need a command line tool to convert format:) So I decided to analyze difference between BIT … Continue reading
《通用Jtag下载器》Jtag协议
最近需要自己做一个Jtag下载器,在这里做一些备忘。 Jtag是Joint Test Action Group的缩写,简单来说就是“在线测试和边界扫描”。常见的ARM和CPLD、FPGA都带有Jtag接口,可以用于更新固件,测试IC的IO功能。 包含以下内容: Jtag接口 TAP状态机 Jtag时序
《通用Jtag下载器》各种不同的Jtag接口
最近同时在弄ARM的Jtag和Xilinx的Jtag,发现虽然接口一样,但是Pin的顺序完全不同,在这里列出来,备忘一下。 主要的Jtag接口有10pin、14pin、20pin的,其中10pin的jtag,AVR和xilinx的一致。但是ARM用的10pin的Jtag就不一样。 以下部分图片从ARM官网下载,自己改了几个标签。