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NTP53X2 Datasheet(PDF) 67 Page - NXP Semiconductors |
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NTP53X2 Datasheet(HTML) 67 Page - NXP Semiconductors |
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67 / 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 67 / 133 The WRITE CONFIG command writes the 4 byte data to the requested block address of the configuration memory. Access to the configuration blocks depends on the status and definition of the related block within the configuration memory (see Section 8.1.3). If the requested configuration block is not write accessible due to the actual status, NTAG 5 link will respond with Error_flag set. The timing of the command is write alike. Option_flag = 0b and Option_flag = 1b is supported and is in accordance with ISO/IEC 15693 write-alike commands. Table 118. WRITE CONFIG request format Flags WRITE CONFIG Manuf. code UID Block Address Data CRC16 8 bits 8 bits 8 bits 64 (optional) 8 bits 32 bits 16 bits Table 119. WRITE CONFIG response format when Error_flag is NOT set Flags CRC16 8 bits 16 bits Table 120. WRITE CONFIG response format when Error_flag is set Flags Error Code CRC16 8 bits 8 bits 16 bits 8.2.3.3 PWD Authentication NTAG 5 link can be configured to be used for plain password authentication. 8.2.3.3.1 GET RANDOM NUMBER Command code = B2h The GET RANDOM NUMBER command is required to receive a 16-bit random number. The passwords that will be transmitted with the SET PASSWORD, ENABLE/DISABLE NFC PRIVACY and DESTROY commands have to be calculated with the password and the random number (see Section 8.2.3.3.2). Table 121. GET RANDOM NUMBER request format Flags GET RANDOM NUMBER Manuf. code UID CRC16 8 bits 8 bits 8 bits 64 bits (optional) 16 bits Table 122. GET RANDOM NUMBER response format when Error_flag is NOT set Flags Random_Number CRC16 8 bits 16 bits 16 bits |
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