板子上的C6748在上电之后测复位信号引脚RESETn是低电平,应该是高电平吧? 因为板子一直在CCS下进不去debug模式看手册应该是高电平吧,这是我的复位信号的原理图,麻烦看看这样对吗,谢谢
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RESET信号是在电源,时钟起来稳定后拉低一段时间后再拉高,拉低时间需要符合手册上第84页上的时序图。
http://www.ti.com/lit/ds/symlink/tms320c6748.pdf