For PN7462 + SAM AV2 reference, we have in AccessDoor EC example. (package from docstore), There is also UM on this example https://www.nxp.com/docs/en/user-guide/UM10957.pdf. It is non X mode, so DESFire authentications is performed by SAM module itself (PN is gateway iso7816 <-> ISO14443) .
You may download the following EC package from the docstore, please refer to the attachment for more details.

Hope that helps,
Have a great day,
Kan
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