请问单个6678的JTAG口如果用14管教的,需要缓冲吗,电平是接1.8V还是3.3V
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接1.8v
需不需要buffer看JTAG口和JTAG头之间的距离是否超过6Inch. 具体JTAG电路设计, 可以参考下面的wiki网站.
http://processors.wiki.ti.com/index.php/XDS_Target_Connection_Guide#Buffered_Case