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© NXP B.V. 2007. All rights reserved.

Product data sheet

Rev. 3.0 — 14 March 2007

11 of 33

NXP Semiconductors

SL2 ICS53/SL2 ICS54

I•CODE SLI-S/I•CODE SLI-S HC

PUBLIC

The different passwords are addressed with the Password Identifier.

Table 5.

Request format

SOF

Flags

Get Random

Number

IC Mfg

code

UID

CRC16

EOF

8 bits

8 bits

8 bits

64 bits

16 bits

8 bits

Table 6.

Response format when Error_flag is set

SOF

Flags

Error code

CRC16

EOF

8 bits

8 bits

16 bits

Table 7.

Response format when Error_flag is NOT set

SOF

Flags

Random Number CRC16

EOF

8 bits

16 bits

16 bits

8.1.3.2 Set password

Command Code = B3h

With the Set Password command the different Passwords can be transmitted to the Label

to get access to the different protected functionalities on the following commands. The Set

Password command has to be executed just once for the related passwords if the label is

powered.

Remark: The Set Password command can only be executed in addressed or selected

mode except of the Privacy Password.

The XOR Password has to be calculated with the password and two times the received

random number from the last Get Random Number command:

XOR_Password[31:0] = Password[31:0] XOR {Random_Number[15:0],

Random_Number[15:0]}

The different passwords are addressed with the Password Identifier.

Table 8.

Request format

SOF

Flags

Set

Password

IC Mfg

code

UID

Password

Identifier

XOR

Password

CRC16

EOF

8 bits

8 bits

8 bits

64 bits 8 bits

32 bits

16 bits

8 bits

Table 9.

Password Identifier

Password Identifier

Password

01h

Read

02h

Write

04h

Privacy

08h

Destroy SLI-S

10h

EAS