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NTP53X2 Datasheet(PDF) 22 Page - NXP Semiconductors |
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NTP53X2 Datasheet(HTML) 22 Page - NXP Semiconductors |
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22 / 133 page  NXP Semiconductors NTP53x2 NTAG 5 link - NFC Forum-compliant I2C bridge NTP53x2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved. Product data sheet Rev. 3.3 — 3 July 2020 COMPANY PUBLIC 544533 22 / 133 Table 16. NFC Global Crypto Header (GCH) location Block Address NFC I2C Byte 0 Byte 1 Byte 2 Byte 3 0Ch 100Ch RFU NFC_GCH RFU Table 17. Global Crypto Header Configuration in plain password mode Value Status Description 81h Writable (default) The NFC passwords can be read and written with the READ CONFIG and WRITE CONFIG commands. E7h Locked The NFC passwords cannot be read and written with the READ CONFIG and WRITE CONFIG commands. all others Invalid NOTE: LOCK PASSWORD command is needed to lock NFC passwords permanently (see Section 8.2.3.3.4). Table 18. Global Crypto Header Configuration Value in AES mode Value Status Description 81h Deactivated (default) The settings of the NFC Protection Pointer and the NFC Protection Pointer Condition are not activated. Read and write access to the user memory is possible independent of the settings without a previous mutual authentication. The Protection Pointer Address and the NFC Protection Pointer Condition byte can be modified with a PROTECT PAGE command without a previous mutual authentication except of the LOCK PAGE PROTECTION CONDITION command has been successfully executed before. The Keys and Key Privileges can be read and written with the READ CONFIG and WRITE CONFIG commands according to the status of the related Key Header. The settings for the EAS/AFI protection are not activated. Access with the related commands to EAS and AFI is possible without a previous mutual authentication. 87h Deactivated & privileges locked The status is the same as for 81h with the exception that the Key Privileges are locked and cannot longer be modified. The settings for the EAS/AFI protection are not activated. Access with the related commands to EAS and AFI is possible without a previous mutual authentication. C1h Access right activated The settings of the Protection Pointer address and the Protection Pointer Condition are enabled. Read and write access protection is enabled according to the initialized values. The Keys and Key Privileges can be read and written with the READ CONFIG and WRITE CONFIG commands according to the status of the related Key Header. The settings for the EAS/AFI protection are enabled. Access with the related commands to EAS and AFI is only possible according to the EAS/AFI protection conditions. |
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