SL2ICS53 datasheet(26/33 Pages) NXP

26 / 33 page

113730

Product data sheet

Rev. 3.0 — 14 March 2007

26 of 33

NXP Semiconductors

SL2 ICS53/SL2 ICS54

I•CODE SLI-S/I•CODE SLI-S HC

PUBLIC

8.2.3 Destroy

As defined in EPC Specification “13.56 MHz ISM Band Class 1 Radio Frequency (RF)

Identification Tag Interface Specification”.

Remark: With the Destroy command from the EPC command set only the EPC

functionality will be destroyed.

8.3 Long range command

8.3.1 Long range CMD

Command Code = 40h

The Long Range CMD command is designed to allow the use of the higher limits defined

in the ISO/TR 7003:1990. The bit and byte coding is the same as it is defined in EPC

Specification “13.56 MHz ISM Band Class 1 Radio Frequency (RF) Identification Tag

Interface Specification”.

To reduce the number of pulses the redundancy check is changed from a CRC8

calculation to an XOR of the transmitted parameters (Long Range CMD, Data Selector,

Number of Slots)

• Number of slots:

– If the Data Selector is transmitted for EAS the label will ignore the received

Number of Slots parameter and will use always one Slot (like EAS Alarm

command, see Section 8.1.3.16 “EAS alarm”) with EAS. For EAS typically 00h is

used as the value for Number of Slots to reduce the number of transmitted pulses.

– If the Data Selector is transmitted for UID or EPC the label will respond within one

of the transmitted Number of Slots on a pseudo random basis and will calculate a

new slot for a following command.

Labels, which have executed a Destroy EPC command before will not respond to this

command if the Data Selector for EPC is transmitted.

Table 67.

Request format

SSOF

Long Range

CMD

Data

Selector

Number of Slots

XOR

CEOF

8 bits

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