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NTP53X2 bảng dữ liệu(PDF) 28 Page - NXP Semiconductors

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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
28 / 133
Block Address
NFC
I2C
Byte 0
Byte 1
Byte 2
Byte 3
Description
25h
1025h
NFC_PWD5_
0 (LSB)
NFC_PWD5_1
NFC_PWD5_2
NFC_PWD5_
3 (MSB)
AREA_1 Read
Password
26h
1026h
NFC_PWD6_
0 (LSB)
NFC_PWD6_1
NFC_PWD6_2
NFC_PWD6_
3 (MSB)
AREA_1 Write
Password
For I2C password authentication, there are four 32-bit I2C passwords (default value of all
password bytes is 00h) which can be read or written by the host depending on the I2C
Key Header configuration.
Table 28. I2C Password location
Block Address
NFC
I2C
Byte 0
Byte 1
Byte 2
Byte 3
Description
33h
1033h
I2C_PWD0_
0 (LSB)
I2C_PWD0_1
I2C_PWD0_2
I2C_PWD0_
3 (MSB)
Read Password
34h
1034h
I2C_PWD1_
0 (LSB)
I2C_PWD1_1
I2C_PWD1_2
I2C_PWD1_
3 (MSB)
Write Password
35h
1035h
I2C_ PWD2_
0 (LSB)
I2C_PWD2_1
I2C_PWD2_2
I2C_PWD2_
3 (MSB)
AREA_1 Read
Password
36h
1036h
I2C_ PWD3_
0 (LSB)
I2C_PWD3_1
I2C_PWD3_2
I2C_PWD3_
3 (MSB)
AREA_1 Write
Password
Password authentication from I2C perspective is done by using I2C write command with
the password to the I2C Key authenticate location. This will make the I2C logic to enter
the Authenticated state if the key matches with the respective key.
Table 29. I2C Key Authenticate Password location
Block Address
Byte 0
Byte 1
Byte 2
Byte 3
1096h
I2C_PWD0_
0_AUTH (LSB)
I2C_PWD0_
1_AUTH
I2C_PWD0_
2_AUTH
I2C_PWD0_3_
AUTH (MSB)
Read Authenticate
1097h
I2C_PWD1_
0_AUTH (LSB)
I2C_PWD1_
1_AUTH
I2C_PWD1_
2_AUTH
I2C_PWD1_3_
AUTH (MSB)
Write Authenticate
1098h
I2C_PWD2_
0_AUTH (LSB)
I2C_PWD2_
1_AUTH
I2C_PWD2_
2_AUTH
I2C_PWD2_3_
AUTH (MSB)
AREA_1 Read
Authenticate
1099h
I2C_PWD3_
0_AUTH (LSB)
I2C_PWD3_
1_AUTH
I2C_PWD3_
2_AUTH
I2C_PWD3_3_
AUTH (MSB)
AREA_1Write
Authenticate
8.1.3.10 I2C Key Header
The Host interface can access the user memory with I2C READ and I2C WRITE
commands. The memory access may be protected by plain password depending on the
access conditions.
The programming of I2C Key Header can be done in only one direction from lower state
to higher state and it is irreversible.
The NFC interface can access this block with READ CONFIG and WRITE CONFIG
commands if not locked by NFC section lock. Once locked as per table below, I2C_KH
cannot be updated from the NFC interface anymore.


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