User's Manual Part 1
13,56 MHz Multitag Reader Module, Version 0.9v
ACG Identification Technologies AT Page 37
5.3.17.6.1 Flags
Flags have to be correct in order to succeed. Following figure describes the flag byte.
RFU bits are set automatically and cannot be changed. The inventory flag has to be
set executing the inventory command.
Bit Flag name Value Description
0 RFU 1 Reserved for future use
1 RFU 1 Reserved for future use
0 Flags bit 5 to 8 see Figure 5-19 2 Inventory
1 Flags bit 5 to 8 see Figure 5-20
3 RFU 0 Reserved for future use
Figure 5-18: ISO15693 request flags bit 0 to 3
Bit Flag name Value Description
0 Command is executed according the
address flag.
4 Select
1 Only selected tags execute the command.
The address flag shall be set to 0
0 UID is not included in the command. 5 Address
1 UID is included. Only the addressed tag
executes the command. The select flag
shall be set to 0.
6 Option x Defined in the command code description.
Default is 0.
7 RFU 0 Reserved for future use
Figure 5-19: ISO15693 request flags bit 4 to 7
Bit Flag name Value Description
0 AFI field is not present 4 AFI
1 AFI field is present
0 16 slots 5 Slots
1 1 slot
6 Option x Defined in the command code description.
Default is 0.
7 RFU 0 Reserved for future use
Figure 5-20: ISO15693 request flags bit 4 to 7, inventory flag is set