Product Specification

SL1 ICS31 01

Rev. 1.2

July 2000

Page 8 of 22

Public

5.3.3 Special Functions (EAS/QUIET)

The Special Functions block holds the two EAS bits (Electronic Article Surveillance mode active

à the label answers at an EAS command) as well as the two QUIET bits (QUIET mode enabled à

the label is permanently disabled but can be activated again with the ‘Reset QUIET bit’ command).

The state of QUIET mode does not influence the functionality of the EAS command.

The remaining 28 bits (greyed ‘x’ in the following figure) are reserved for future use.

Byte 0

Byte 1

Byte 2

Byte 3

âMSB

LSB

â

Block 3:

Special

Functions

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x|x

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q|q

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e|e

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x|x

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x|x

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x|x

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x|x

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x|x

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x|x

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x|x

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x|x

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Quiet

EAS

Quiet:

q|q = 1|1 à QUIET mode enabled

q|q = 0|0 à QUIET mode disabled

EAS:

e|e = 1|1 à EAS mode enabled

e|e = 0|0 à EAS mode disabled

Writing of bit pairs 1|0 or 0|1 to block 3 is not allowed!

Changing of the Write Access Control or Configuration must be done in secure environment

(by reading the current value of the block and masking in the new values for bit positions that

may be changed). The label must not be moved out of the communication field of the antenna

during writing! We recommend to put the label close to the antenna and not to remove it

during operation.

5.3.4 Family Code and Application Identifier

The I•CODE system offers the feature to use (independently) Family Codes and/or Application

Identifiers with some reader commands (this allows for example the creation of ‘label families’).

These two 8-bit values are located at the beginning of User Data (block 4) as shown in the

following figure and are only evaluated if the corresponding bytes at the reader commands are

unequal to zero.

Only if both corresponding parameter bytes at the reader commands Anticollision/Select, EAS and

Unselected Read, respectively, are set to zero, block 4 can be used for user data without restriction.

Byte 0

Byte 1

Byte 2

Byte 3

âMSB

LSB

â âMSB

LSB

â

Block 4:

Family Code,

Application ID

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Family Code

Application ID

The greyed bytes are for customer usage as well as the remaining blocks (5 to 15) are.

5.3.5 Configuration of delivered ICs

I•CODE1 Label ICs are delivered with the following configuration by Philips:

• Serial number is unique and read only

• Write Access Conditions allow to change all blocks (with the exception of both serial number blocks)

• Status of EAS mode is not defined

• Status of QUIET mode is not defined

• Family Code and Application Identifier are not defined

• User Data memory is not defined

As the status of QUIET mode is not defined at delivery, the first command to be executed on

the I•CODE1 Label IC should be the Reset QUIET Bit command!