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Distinguished Tag Read/Write Function
3-4
Distinguished Tag Read/Write Function
3-6
Each of I.CODE2 and ISO/IEC chips has a one-byte identification code called
AFI (Address Family Identifier) to find out the chip that is suitable for the
application area of an antenna.
I.CODE1 chip has two one-byte identification codes called the family code
and Application ID, respectively.
These respond only when a Tag identification code matches the identification
code in the command transmitted from the antenna during communication.
This function is called Tag identification access function.
To make or change the Tag identification code, see 5-4 "System Command."
Also, to make or change the identification code in the command transmitted
from the antenna, see 5-6 "Setting Command."
When perform this function in the ISO mode, make AFI settings both on the
Reader/Writer above and Tag as well as the setting on the Reader/Writer to
enable the function. To enable or disable the setting, execute AFI
Enable/Disable Change Command of Reader/Writer described in 5-6-1.
The factory-setting of the Reader/Writer's identification code is "00h" both for
family code and application ID. This allows communications regardless of the
Tag's identification code.
In I.CODE1 mode
Reader/Writer set value
No.
Family code
00h
(1)
(2)
55h
(3)
55h
Reader/writer setting (1)
This setting enables communication with Tag A, B, and C, as both of
the family code and application ID are set to "00h."
Reader/writer setting (2)
This setting enables communications with Tag A and B as their family
codes match. Communication with Tag C is not possible. This
identification code has nothing to do with identifying Tags as the
application ID is "00h."
Reader/writer setting (3)
The communication with Tag "A" is possible as the family code and
application ID match. The communication with Tag B and C are not
possible.
In ISO mode
Reader/Writer AFI set
No.
value
00h
(1)
(2)
0Ah
(3)
5Ah
Reader/writer setting (1)
This setting enables communication with Tag A, B, and C as AFI is set
to "00h."
Reader/writer setting (2)
This setting enables communication with Tag A and B of which the
AFI's 4 least significant bits "Ah" match. As the 4 most significant bits
are "0h," the part of this identification code has nothing to do with
identifying a Tag.
Reader/writer setting (3)
The communication with Tag "A" is possible as AFI matches.
Application ID No.
00h
A
00h
B
AAh
C
Tag AFI set value
No.
A
B
C
Section 3-4
Tag set value
Family
Application
code
ID
55h
AAh
55h
11h
00h
00h
5Ah
0Ah
00h
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