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5509a的TOUT管脚和CLKOUT管脚的问题

Other Parts Discussed in Thread: TMS320VC5509A

我在TMS320VC5509A当中运行一个工程,我用PLL设置时钟频率为192MHZ,运行后测试CLKOUT管脚输出为192MHZ,但是测试TOUT管脚无信号,请问这是为什么呢?