Dear tom fan,
the information regarding the DESFire family, is secured under NDA (Non Disclosure Agreement) this means that all the information, support, etc. regarding this family should be done using secured communication channels and just to customer with active and signed NDA. as you can see the datasheet you are using is the short datasheet

if you want to have access to the full documentation please request an NDA in our private case system, the NDA team will help you sign this and guide you to the path to request the NDA documents.
Support|NXP
if you have any questions or issues please let me know.
BR
Jonathan