Datasheet

113730 © NXP B.V. 2007. All rights reserved.
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 8 bits 8 bits 8 bits
8 bits