NTP53X2 datasheet(109/133 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

109 / 133

Table 231. NFC Lock Block Configuration location

Block Address

NFC

I2C

Byte 0

Byte 1

Byte 2

Byte 3

6Ah

106Ah

NFC_LOCK_BL0

NFC_LOCK_BL1

...

89h

1089h

NFC_LOCK_BL62

NFC_LOCK_BL63

RFU

Table 232. I2C Lock Block Configuration location

Block Address

NFC

I2C

Byte 0

Byte 1

Byte 2

Byte 3

8Ah

108Ah

I2C_LOCK_BL0

I2C_LOCK_BL1

RFU

8Bh

108Bh

I2C_LOCK_BL2

I2C_LOCK_BL3

RFU

8.6.2 Memory Areas

The memory may be split into three different configurable areas with different access

conditions.

Highest priority has the 16-bit Protection Pointer PP_AREA_1. It splits the memory into

an AREA_0 and an AREA_1 at the address configured with the PP_AREA_1.

Restricted area AREA_1, starting from block address PP_AREA_1 is automatically

protected by the AREA_1 read and AREA_1 write password in plain password mode.

In AES mode, a key with read and write privilege is needed to be able to access the

restricted area.

To enable password protection to AREA_1 from I2C perspective, I2C passwords need to

be enabled by setting I2C key header (I2C_KH) to active. In that case AREA_1 read and

write passwords need to be presented to NTAG 5 link.

The split configured with the 16-bit Protection Pointer is the same for both, NFC and I2C

perspective.

The area below this address can be split into two more areas with the 8-bit

NFC_PP_AREA_0-H (see Section 8.1.3.28) and the 8-bit I2C_PP_AREA_0-H (see

Section 8.1.3.11), independently of the NFC and I2C perspective.

NFC AREA_0-L, usually used to store NDEF messages, starts from block 0. NFC

AREA_0-H, usually used as password protected area to store private data, starts from

block address configured by the 8-bit NFC_PP_AREA_0H and ends just before the block

addressed with the PP_AREA_1 configuration byte. If PP_AREA_1 points outside the

addressable memory space, only AREA_0-L and AREA_0-H are available.

I2C AREA_0-L starts from block 0. I2C AREA_0-H, starts from the block address

configured by the 8-bit I2C_PP_AREA_0H.

The concept is illustrated in the Figure below and further details can be found in

AN12366.

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