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TMS570LS1224: pwm波时钟问题

Part Number: TMS570LS1224
Other Parts Discussed in Thread: HALCOGEN, TMS570LC4357,

你好,我用HALCOGEN软件生成pwm波,其中pwm的周期为6250ns,即频率为160K  Hz,见图一。然而我用示波器测得的输出pwm频率大约为10k Hz,见图二。即实际频率是我设置频率的1/16,示波器是正常的。请问这是什么原因呢