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NTP53X2 数据表(PDF) 75 Page - NXP Semiconductors |
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NTP53X2 数据表(HTML) 75 Page - NXP Semiconductors |
75 / 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 75 / 133 8.2.3.3.9 ENABLE NFC PRIVACY Command code = BAh The ENABLE NFC PRIVACY command in plain password mode enables NFC PRIVACY mode (see Section 8.7) for NTAG 5 link if the Privacy password is correct. The XOR password has to be calculated with the password and two times the received random number from the last GET RANDOM NUMBER command: XOR_Password[31:0] = Password[31:0] XOR {Random_Number[15:0], Random_Number[15:0]}. To get out of the NFC PRIVACY mode, the valid Privacy password has to be transmitted to the IC with the DISABLE NFC PRIVACY command. 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. NOTE: In AES mode, Mutual Authentication with Purpose_MAM2 = 1001b needs to be executed to enable the NFC PRIVACY mode for NTAG 5 link. Table 150. ENABLE NFC PRIVACY request format Flags SET PASSWORD IC Mfg code UID XOR password CRC16 8 bits 8 bits 8 bits 64 bits optional 32 bits 16 bits Table 151. ENABLE NFC PRIVACY response format when Error_flag is NOT set Flags CRC16 8 bits 16 bits Table 152. ENABLE NFC PRIVACY response format when Error_flag is set Flags Error Code CRC16 8 bits 8 bits 16 bits 8.2.3.3.10 DISABLE NFC PRIVACY Command code = B3h The DISABLE NFC PRIVACY command moves the NTAG 5 link out of the NFC PRIVACY mode. Remark: The timing of the DISABLE PRIVACY command is write alike. The XOR password has to be calculated with the password and two times the received random number from the last GET RANDOM NUMBER command: XOR_Password[31:0] = Password[31:0] XOR {Random_Number[15:0], Random_Number[15:0]}. The Privacy identifier is 04h. |
类似零件编号 - NTP53X2 |
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类似说明 - NTP53X2 |
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