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[参考译文] TM4C1294NCPDT:Tiva 数据表以太网引脚分配-与802.3af 不一致

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Other Parts Discussed in Thread: TM4C1294NCPDT

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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/872962/tm4c1294ncpdt-tiva-datasheet-ethernet-pinout---not-consistant-with-802-3af

器件型号:TM4C1294NCPDT

我在数据表(和评估原理图)中注意到 RJ45引脚1和 PIN2为 TX、而标准具有 RX:

"TivaTmTM4C1294NCPDT 微控制器" -"图20-13. 以太网插孔接口"

"https://en.wikipedia.org/wiki/Power_over_Ethernet"-"引脚分配"

所以:

  • 造成这种不一致的原因是什么?
  • Tiva 提供“MDI/MDI-X 交叉支持”这一事实是否可以解决此问题?