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当选用外部时钟时，AW32的ICG中，ICGC1寄存器中的HGO像RANGE一样影响外部晶振的选择。<br /><br />FBE模式，如果HGO=1，Xtal范围为1MHz-16MHz.<br /> 如果HGO=0，Xtal范围为1MHz-8MHz.<br /><br />数据手册却告诉我们：<br />High Gain Oscillator Select — The HGO bit is used to select between low power operation and high gain operation for improved noise immunity. This bit is write-once after reset.<br /><br />0 Oscillator configured for low power operation.<br />1 Oscillator configured for high gain operation.<br />丝毫没提上一点。难道又是我理解错？？<br /> |
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