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c6678 EVM板上有FPGA JTAG口可以烧写Bit文件。具体可以参考evm6678 TRM文档。
3.2.11 TAP_FPGA1, FPGA JTAG Connector (For Factory Use Only)
http://wfcache.advantech.com/support/DSPM-8301E_EVM%20(6678)-3.0/TMDSEVM6678L_Technical_Reference_Manual_2V01_0320.pdf
FPGA源码可以到下面的网站下载。
http://www2.advantech.com/Support/TI-EVM/6678le_download3.aspx
下面的链接里TMDSEVM6678Lx_EVM_REV_3_0_Known_Issues.docx 的文档有对FPGA reprogram的说明。
2.6 The FPGA code update issue on the EVMs
http://www2.advantech.com/Support/TI-EVM/6678le_download3.aspx
另外,请问为什么要重写FPGA呢?FPGA里的程序是针对EVM板的,不需要修改。