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我现在板子上使用一块10GX系列的FPGA和3块MAX系列的CPLD,如何共用一个JTAG接口进行配置下载程序。
我现在的方法是四个设备的TMS和TCK接口分别与JTAG接口接到一起,然后JTAG的TDI接口接到第一块的TDI接口上,然后第一块的TDO接口接到第二块的TDI接口上,第二块的TDO接到第三块的TDI接口,依次类推,最后一块的TDO接口接到JTAG的TDO接口上。
不知道以上的方式是不是正确的,希望可以得到诸位的解答。
提前感谢!
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This should help:
Intel Cyclone 10 GX Device Design Guidelines
"If you have more than one device in the chain, connect the TDO pin of a device to the TDI pin of the next device in the chain."
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是的。以上的建议是可行的。此外,你也可以参考以下的文件。
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