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TMS320F28335: PWM模块计数到0触发中断到进入中断程序的延时是多少?

Part Number: TMS320F28335

PWM模块计数到0触发中断到进入中断程序的延时是多少?级联H桥进行载波移相时需要对不同的PWM模块载波进行移相,每个PWM模块如果都采用计数到0进行装载比较值的话,移相后一个周期会出现前后两个周期环路计算的比较值,如果采用一个PWM1模块作为基准,用PWM1模块计数到0触发中断立即配置PWM2/3...的比较值后进行环路运算,来规避PWM2/3...在周期中间加载比较值的问题,但是不知道PWM触发到进入中断的延时是多少