NTP53X2 datasheet(48/133 Pages) NXP

48 / 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

48 / 133

Bit

Name

Value

Description

Section 3 is not readable by I2C

Section 2 is readable by I2C

Section 2

Section 2 is not readable by I2C

Section 1 is readable by I2C

Section 1

Section 1 is not readable by I2C

Section 0 is readable by I2C

Section 0

Section 0 is not readable by I2C

Note: Section 7 (default SRAM content) and Section 8 (Device configuration lock bytes)

are always readable.

In case of not readable and/or not writeable, IC responds with an NACK from I2C

perspective and with an error from NFC perspective, when trying to access locked

sections.

8.1.4 Session registers

After POR, the content of the configuration settings (see Section 8.1.3) is loaded

into the session register. The values of session registers can be changed during a

session. Change to session registers take effect immediately, but only for the current

communication session. After POR, the session registers values will again contain the

configuration register values as before.

To change the default behavior, changes to the related configuration bytes are needed,

but the related effect will only be visible after the next POR.

Session registers starting from block A3h until the end may be write protected with

LOCK_REGISTER bit.

Reading and writing the session registers via I2C can only be done with READ

Most of the parameters are defined in the configuration memory section.

Table 85. Session Register Location

Block Address

NFC

I2C

Byte 0

Byte 1

Byte 2

Byte 3

Remark

A0h

10A0h

STATUS_REG

RFU

Status

Section 8.1.4.1)

A1h

10A1h

CONFIG_REG

Configuration (see

Section 8.1.4.2)

A2h

10A2h

SYNC_DATA_BLOCK_REG

RFU

Block

Address (see

Section 8.1.4.3)

A3h

10A3h

PWM_GPIO_CONFIG_REG

RFU

PWM and GPIO

Configuration(see

Section 8.1.4.4)

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