SAM module in the SAM-S vs SAM-X mode

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SAM module in the SAM-S vs SAM-X mode

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mahmoudhosseini
Contributor III

Dear All,

As you can see in the NXP documents(like NFC Reader Design: How to build your own reader document) there are 2 various kind of topology for using SAM , the old SAM-S mode and newer SAM-X mode.

SAM.gif

My experiences is only in the first SAM-S mode ,while as I know SAM-X is latest and more secure than the other one.

But whats benefit of SAM-X vs SAM-S? why we must migrate to new mode? And is there any other path between MCU and PCD except the one showed in picture?(seems AUTH CMD is sent directly from MCU to PCD)

With best regards.

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