xlinx CPLD是否也要设置全局时钟如何设置
电路板已经连接好了,但是否还要软件设置,我当一般io用,综合时报警
WARNING:Cpld:1239 - The global clock designation (BUFG) on signal
WARNING:Cpld:1239 - The global clock designation (BUFG) on signal ??????????????????? CPLD的结构就不允许你这样用,既然板子已经做好,手术刀、飞线侍侯!
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