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108MHZ的信号 经过74VHC164移位 转成8位并行的,将SYSCLC2设为13.5MHZ是不是就可以读了?
DSP的GPIO的最高读取速度100MHZ,其读取原理是什么?22MHZ的频率是可以读的怎么读的,是不是一定要将慢速外部时钟设为22MHZ才能读,要不是的话,怎么读,读取原理是什么?