NXP Semiconductors
SL2S2002_SL2S2102
ICODE SLIX
SL2S2002_SL2S2102 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product data sheet Rev. 3.4 — 10 August 2017
COMPANY PUBLIC 178034 16 / 39
The SET PASSWORD command enables the EAS/AFI password to be transmitted to the
label to access EAS and/or AFI (if the EAS and/or AFI password is enabled). The SET
PASSWORD command has to be executed just once for the related password if the label
is powered.
Remark: The SET PASSWORD command can only be executed in Addressed or
Selected mode.
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 EAS/AFI password is addressed with the password identifier.
Table 11. Request format
SOF Flags SET
PASSWORD
IC Mfg
code
UID Password
identifier
XOR
password
CRC16 EOF
- 8 bits 8 bits 8 bits 64 bits
optional
8 bits 32 bits 16 bits -
Table 12. Password Identifier
Password identifier Password
10h EAS/AFI
Table 13. Response format when Error_flag set
SOF Flags Error code CRC16 EOF
- 8 bits 8 bits 16 bits -
Table 14. Response format when Error_flag NOT set
SOF Flags CRC16 EOF
- 8 bits 16 bits -
Remark: If the IC receives an invalid password, it will not execute any following
command until a Power-On Reset (POR) (RF reset) is executed.
9.4.3.3 WRITE PASSWORD
Command code = B4h
The WRITE PASSWORD command enables a new password to be written into the
related memory if the related old password has already been transmitted with a SET
PASSWORD command and the addressed password is not locked (see Section 9.4.3.4
"LOCK PASSWORD").
Remark: The WRITE PASSWORD command can only be executed in addressed
or selected mode. The new password takes effect immediately which means that the
