i.MX 8M Plus and PCMF1USB3S

[www1519]

Dear NXP Engineer

关于NXP i.MX 8M Plus的开发板回路的疑问，拜托协助确认。

从PCMF1USB3S的Datasheet看，A1和A2是有极性的，

（虽然从原理上来说，不应该有极性要求，但是Datasheet中确实标注了极性，不知道其设计的背景）

但是从NXP i.MX 8M Plus的开发板回路图看，PCMF1USB3S的A1和A2是可以交换正负极使用的，

由于本次PCB（量产品中使用预定）设计中也遇到了同样的问题，需要将A1和A2进行交换，

但是不知道是否可以这样使用，拜托协助确认，非常感谢！

以上/ Best regards.

[JorgeCas]

Hello I hope you are doing well.

Yes, A1 and A2 of PCMF1USB3S can be used interchangeably.

Best regards.

[www1519]

Dear NXP Engineer

About the EVK circuit of NXP i.MX 8M Plus,  confirm it, please!

From the Datasheet of PCMF1USB3S, A1 and A2 are polarized,

(Although in principle, there should not be a polarity requirement, polarity is indeed marked in the Datasheet, and the background of its design is unknown.)

However, from EVK Schematic of NXP i.MX 8M Plus, it can be seen that A1 and A2 of PCMF1USB3S can be exchanged for positive and negative poles to be used, due to the same issue encountered in the design of the PCB (intended for use in mass production), it is necessary to exchange A1 and A2. However, it is unclear whether A1 and A2 can be pin swap in Schematic. 

Confirm it, please.

Thanks BR

[www1519 · Accepted solution]

Dear @JorgeCas 

Thanks a lot for confirmation.

BR