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參數(shù)資料
| 型號(hào)： | 935264467005 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, UUC |
| 封裝： | WAFER |
| 文件頁數(shù)： | 23/24頁 |
| 文件大?。?/td> | 341K |
| 代理商： | 935264467005 |
1 Chip Specification
Rev. 2.2
January 2005
SL044022.doc/B
Public
Page 8 of 24
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
MSB
LSB
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 ICODE 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
MSB
LSB
MSB
LSB
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.
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