Omron V720 Series User Manual page 19

3-2 Tag Access Functions
2) System Area of I-CODE1
(1) SNR（pages C Hex, B Hex）
(2) Write-access conditions (page D Hex)
(3) QUIET/EAS (page E Hex)
(4) Family code/application ID (page F Hex)
The system area of I-CODE1 is mapped onto the memory. OMRON allocates
the system area to pages B Hex to F Hex.
SNR is a tag-specific code and has been written into the memory during the
chip production process.
The RFID Unit is shipped with this page write-access inhibited (refer to page D
Hex); there is no way of making this page rewritable by the user.
The pages are write-inhibited permanently if they are so indicated in the
memory map. The factory settings are as follow. If the two bits of a particular
page are 0.0, that page is write-protected.
Page
D Hex
Byte 0
Byte 1
Byte 2
Byte 3
QUIET mode: All the functions of a tag are suspended completely. Use Reset
Quiet Bit to resume these functions. (q=0: QUIET mode disabled; q=1: QUIET
mode enabled)
EAS mode: inhibition/permission of EAS function
(e=0: EAS mode disabled; e=1: EAS mode enabled)
Page Eh
Byte 0
Byte 1
Byte 2
Byte 3
The pages marked with "×" in the table above are reserved for future use.
Family code and application ID are special areas for enabling the user to
identify an IC that is suitable to a specific user application.
Block Eh
Byte 0
Byte 1
Byte 2
Byte 3
MSB
1 1 1 1
Page E Hex Page D Hex Page C Hex Page B Hex
1 1 1 1
Page 2 Hex Page 1 Hex Page 0 Hex Page F Hex
1 1 1 1
Page 6 Hex Page 5 Hex Page 4 Hex Page 3 Hex
1 1 1 1
Page A Hex Page 9 Hex Page 8 Hex Page 7 Hex
MSB
× × ×
× × ×
× × ×
× × ×
MSB
Family code
Application ID
Section 3-2
0 0 0
1 1 1
1 1 1
1 1 1
×
q q e
× × × ×
× × × ×
× × × ×
User area
User area
LSB
0
1
1
1
LSB
e
×
×
×
LSB
3-4