NTP53X2 datasheet(76/133 Pages) NXP

76 / 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.

Product data sheet

Rev. 3.3 — 3 July 2020

COMPANY PUBLIC

544533

76 / 133

Option_flag = 1b and Option_flag = 0b are supported.

Table 153. DISABLE NFC PRIVACY request format

Flags

SET

PASSWORD

Manuf.

code

UID

Privacy

identifier

XOR

password

CRC16

8 bits

64 bits

(optional)

8 bits

32 bits

16 bits

Table 154. DISABLE NFC PRIVACY response format when Error_flag is NOT set

Flags

CRC16

8 bits

16 bits

Table 155. DISABLE NFC PRIVACY response format when Error_flag is set

Flags

Error Code

CRC16

8 bits

16 bits

Remark: If the IC receives an invalid password, it will not execute any following

command until a Power-On Reset (POR) (NFC reset) is executed.

8.2.3.4 AES Authentication

8.2.3.4.1 Introduction

NXP implements a scalable security approach. This means, during lifetime the security

level may be changed. In production, NXP configures the IC, that plain password mode

is enabled. With the DEV_SEC_CONFIG byte (see Table 66) AES mutual authentication

may be activated. Only in case NFC Security is set to AES mode following commands

and AES mutual authentication is enabled. To lock the security level, the Security Lock

bits need to be set to 010b (see Table 66).

NOTE: AES authentication mode and this flexibility is only available for NTP5332.

8.2.3.4.2 PROTECT PAGE

See Section 8.2.3.3.6

8.2.3.4.3 LOCK PAGE PROTECTION CONDITION

See Section 8.2.3.3.7

8.2.3.4.4 AUTHENTICATE

As defined in ISO/IEC 15693 and ISO/IEC 29167-10.

Command code = 35h

CSI code= 00h (AES Crypto Suite)

The AUTHENTICATE command allows the interrogator to perform the following

authentication procedures as defined in ISO/IEC 15693:

• Tag Authentication (TAM1)

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