SL2S3003 datasheet(56/82 Pages) NXP

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NXP Semiconductors

SL2S3003/SL2S3003TT

ICODE 3 (TagTamper)

8.5.3.15 EAS ALARM

Command code = A5h

The EAS ALARM command can be used in the following configurations:

• Option flag is set to 0:

EAS ID mask length and the EAS ID value are not transmitted.

If the EAS mode is enabled, the EAS response is returned from the ICODE 3 IC.

• Option flag is set to 1:

Within the command, the EAS ID mask length must be transmitted to identify how many bits of the following

EAS ID value are valid (multiple of 8 bits). If the EAS Mode is set, the ICODE 3 TagTamper ICs respond. The

response includes the EAS sequence corresponding to the data in the EAS ID configuration (selective EAS).

If the EAS ID mask length is set to 0, the ICODE 3 IC responds with its EAS ID.

SOF

Flags

EAS

ALARM

IC Mfg code UID

EAS ID mask

length

EAS ID value

CRC16

EOF

8 bits

64 bits

optional

8 bits optional

0, 8 or 16 bits

optional

16 bits

Table 99. EAS ALARM Request format

If an error is detected, the ICODE 3 IC remains silent.

Option flag is set to logic 0 or Option flag is set to logic 1 and the EAS ID mask length is not equal to 0:

SOF

Flags

EAS sequence

CRC16

EOF

8 bits

256 bits

16 bits

Table 100. EAS ALARM Response format (Option flag logic 0)

EAS sequence (starting with the LSB, which is transmitted first; read from left to right):

11110100 11001101 01000110 00001110 10101011 11100101 00001001 11111110

00010111 10001101 00000001 00011100 01001011 10000001 10010010 01101110

01000001 01011011 01011001 01100001 11110110 11110101 11010001 00001101

10001111 00111001 10001011 01001000 10100101 01001110 11101100 11110111

Option flag is set to logic 1 and the EAS ID mask length is equal to 0:

SOF

Flags

EAS ID value

CRC16

EOF

8 bits

16 bits

Table 101. EAS ALARM Response format (Option flag logic 1)

If the EAS mode is disabled, the ICODE 3 IC remains silent. See RESET EAS command in Section 8.5.3.13

"RESET EAS".

Note: Labels in the QUIET state do not respond to an EAS ALARM command except if the addressed flag is

set. Labels in the PERSISTANT QUIET mode respond even if the addressed flag is not set (refer to Section 8.4

"State diagram").

SL2S3003/SL2S3003TT

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3.0 — 28 March 2024

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