Philips Semiconductors

Product Specification Rev. 3.1

February 2005

Functional Specification

Standard Label IC SL2 ICS20

20

3.5.3.2 Write and lock commands

If the address of a block to be written does not exist or a block to be written is locked the behaviour of the

Label IC is depending of the addressing mechanism.

3.5.3.2.1 Non Addressed Mode

The label IC remains silent and aborts the command without writing anything.

3.5.3.2.2 Addressed or Selected Mode

The addressed or selected label IC responds with the error code “0F” hex (error with no information given or

error code is not supported).

3.6 Data Integrity

Following mechanisms are implemented in the contactless communication link between interrogator and

label to ensure very reliable data transmission:

•

16 bit CRC per block

•

Bit count checking

•

Bit coding to distinguish between "1", "0", and no information

•

Channel monitoring (protocol sequence and bit stream analysis)

3.7 RF Interface

The definition of the RF-interface is according to the standard ISO/IEC 15693-2 and ISO/IEC 15693-3.