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《UCD3028数字电源软件设计说明》产生DPWM中MSYNC_CH_SEL位在UCD3138如何实现的?

Other Parts Discussed in Thread: UCD3138, UCD3028

用UCD3138开发移相全桥数字开关电源,从网站上下载UCD3138_PSFB_PCM源程序,借鉴《UCD3028数字电源软件设计说明》。

在《UCD3028数字电源软件设计说明》产生DPWM信号中定义Dpwm2Regs.DPWMCTRL1.bit.MSYNC_CH_SEL = 0;

MSYNC_CH_SEL 标示位用来选择要同步的 DPWM,在下载的UCD3138源程序中中没找到相对应的位,

请问,在UCD3138_PSFB_PCM源程序中用什么来定义的MSYNC_CH_SEL 的?

多谢!