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F28035 的PWM端口 三态输出

   TI的工程师:

       您们好!

       现在TI 栅极驱动器的PWM输入端均具有三态特性,用该端口的三态(高阻)来封锁驱动脉冲输出。那么如果脉冲由DSP的PWM接口提供,请问DSP软件 是怎么做的?我现在是必须用直接用DSP的PWM口封锁脉冲,选择芯片为UCD7232