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tms570ls3137的IOMM

Other Parts Discussed in Thread: TMS570LS3137, TMS570LS1114

TMS570LS31x/21x  TRM(SPNU499B)的IOMM一节的表4-1中的最后一项GIOB[2],它的dedicated input pin为142,

但是在数据表上142引脚为FRAYTXEN1,没有提到GIO的功能,是否手册有误?表上的Control Register bit A 和B都是

PINMMR29[16],无法套用下面的选择规则

The input to a module comes from the multiplexed pin when the condition [ A and not(B) ] = TRUE.
• The input to a module comes from the dedicated pad when the condition [ not(A) or (A and B) ] =TRUE.

请问如何配置这个端口。

  • LC:

       你好,

      TMS570LS31/21 TRM是我们整个一个系列的TRM,里面包含了好几种不同功能的芯片。你提到的142管脚在具有flexray总线的芯片上(TMS570LS3137等)是只能用作FLEXRAYXEN1,不能作为I/O,而在没有flexray总线的芯片上(TMS570LS1114等),该管脚作为GIOB【2】。

    所以说,为了更准确的找到你使用的芯片的管脚定义,你可以查看具体的datasheet,这样会更明确一些。

    Ken