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AM3517 时钟系统

Other Parts Discussed in Thread: AM3517

大家好!

          以下是我的时钟电路,32k的时钟用26MHz时钟分频得到。

       

        1、我想知道在系统运行过程中,SYS_CLKREQ的电平状态?

        2、若使用AM3517的热复位SYS_nRESWARM复位系统后,SYS_CLKREQ的电平状态?

        3、若32kHz的时钟也使用外部晶振提供,那么系统在上电后选用哪个时钟当参考时钟来配置系统中其他时钟?

THANKS!