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TMS570LC4357: eCAP的APWM模式影子模式疑问

Part Number: TMS570LC4357

您好,

在使用eCAP模块的APWM模式时发现如下问题,即使用上如何区分下图中红圈标注的两种模式?因为图中的这两种情况没有寄存器控制,如果是立即加载,APRD/ACMP的值将会马上更新,即永远不会出现在图中下面一种CTR=PRD的情况。