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SL1ICS3001W Datasheet(PDF) 8 Page - NXP Semiconductors |
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SL1ICS3001W Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 22 page I•CODE1 Chip Specification Rev. 2.1 May 2000 SL040521.doc/M Public Page 8 of 22 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 | x|x | | x|x | | q|q | | e|e | | x|x | | x|x | | x|x | | x|x | | x|x | | x|x | | x|x | | x|x | | x|x | | x|x | | x|x | | x|x | 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 | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | | x| x | 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! |
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