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F28M36 GPIO速率

大家好。

根据F28M36的datasheet,芯片GPIO toggle的最高频率为25MHZ。

但我的C28运行在150M,M3运行在75M时,使GPIO电平翻转,其频率为8.3M*2=16M

      GpioG1DataRegs.GPATOGGLE.bit.GPIO12 = 1;

请问该怎么设置能提高GPIO的输出速率?谢谢。