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NTP53X2 データシート(PDF) 26 Page - NXP Semiconductors |
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NTP53X2 データシート(HTML) 26 Page - NXP Semiconductors |
26 / 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 26 / 133 Table 24. NFC Key Privileges (KPx) location Block Address NFC I2C Byte 0 Byte 1 Byte 2 Byte 3 11h 1011h NFC_KP0 RFU 13h 1013h NFC_KP1 RFU 15h 1015h NFC_KP2 RFU 17h 1017h NFC_KP3 RFU Table 25 shows the definition of the Key Privileges bytes KPx. The bits define the privileges for the related key used with mutual authentication. If the related bit is set to 1b, the access for the dependent area/feature is granted after mutual authentication with the related key. Table 25. Definition of NFC Key Privileges bytes KPx Bit Privilege Description 7 Restricted AREA_1 Write Write access to restricted user memory AREA_1 6 Restricted AREA_1 Read Read access to restricted user memory AREA_1 5 Crypto Config Preset of Authentication Limit 4 EAS/AFI Access for write alike command for EAS and AFI as following: PROTECT EAS/AFI SET EAS RESET EAS LOCK EAS WRITE EAS ID WRITE AFI LOCK AFI 3 Destroy Access to the DESTROY functionality 2 Privacy Enable/disable of the PRIVACY mode 1 Write Write access to protected user memory area 0 Read Read access to protected user memory area 8.1.3.9 Keys and passwords The keys or passwords are stored in the configuration memory. The usage of the individual keys depends on the related Key Privileges. The state of the keys (including read and write access with the READ CONFIG and WRITE CONFIG commands) depends on the status of the related Key Header and the status of the Global Crypto Header. From I2C perspective, these blocks can be written if not locked by the I2C section lock. Table below shows the location of the 128-bit AES Table 26 keys in the configuration memory. NOTE: AES keys are only available for NTP5332 in AES mode. |
同様の部品番号 - NTP53X2 |
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同様の説明 - NTP53X2 |
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