User's Manual Part 1

13,56 MHz Multitag Reader Module, Version 0.9v
ACG Identification Technologies AT Page 10
3.4.3 Write access condition
Page 02h contains the write access condition for each page. Each page can be set to
read only (bits are set to 0). This procedure is irreversible. Locking page 2 no further
changed of the access condition can be done. Always two bits must be change at the
same time. This register is implemented as OTP.
Byte 0 Byte 1 Byte 2 Byte 3
MSB LSB MSB LSB MSB LSB MSB LSB
1 1 1 1 0 0 0 0 1 1 1 1 11111111111111 1 1 1 1 11
3 2 1 0 7 6 5 4 B A 9 8 F E D C
Special
function
Write
access
Serial
numbe
r
Serial
numbe
r
User
data
… … … … … … … … … …
User
data
Figure 3-10: Write access condition bytes
3.4.4 Special function (EAS), AFI
Special Functions (EAS) and Family Code/Application Identifier are additional
features. For more information refer to the Icode® manual.
3.4.5 User data
All other blocks are free for use and can be changed according the state of the write
access conditions.
3.5 TAGIT®
TAGIT® labels are organized in a wide range of different page size and number of
pages. Automatically the reader detects the correct memory organization.
Switching on the Extended ID mode (see chapter instruction set) the reader appends
two bytes to the UID containing the page size and the number of pages of a label.