NTP53X2 datasheet(67/133 Pages) NXP

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NXP Semiconductors

NTP53x2

NTAG 5 link - NFC Forum-compliant I2C bridge

NTP53x2

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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

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

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

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

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