lri64 STMicroelectronics, lri64 Datasheet - Page 23

• Manufacturer Part Number: lri64
• Description: Memory Tag Ic At 13.56 Mhz, With 64-bit Unique Id And Worm User Area, Iso15693 And Iso18000-3 Mode 1 Compliant
• Manufacturer: STMicroelectronics

LRI64
14
14.1
Flags and error codes
Request flags
In a Request, the 8-bit Flags Field specifies the actions to be performed by the LRI64, and
whether corresponding fields are present or not.
Flag bit 3 (the Inventory_flag) defines the way the four most significant flag bits (5 to 8) are
used. When bit 3 is reset (0), bits 5 to 8 define the LRI64 selection criteria. When bit 3 is set
(1), bits 5 to 8 define the LRI64 Inventory parameters.
Table 3.
1. If the value of the Request Flag is a non authorized value, the LRI64 does not execute the command, and
Table 4.
1. Only bit 6 (Address flag) can be configured for the LRI64. All others bits (5, 7 and 8) must be reset to 0.
Bit
5
6
7
8
Bit
does not respond to the request.
1
2
3
4
Select Flag
Address Flag
Option Flag
RFU
Sub-carrier Flag
Data_rate Flag
Inventory Flag
Protocol Extension
Flag
Name
(1)
Request flags 1 to 4
Request flags 5 to 8 (when bit 3 = 0)
Name
(1)
Value
0
0
1
0
0
(1)
No selection mode.
Must be set to 0.
(Option 1 is not supported)
Non addressed mode.
The UID field is not present in the request. All LRI64 shall
answer to the request.
Addressed mode.
The UID field is present in the request. Only the LRI64 that
matches the UID answers the request.
No option. Must be set to 0.
(Option 1 is not supported)
No option. Must be set to 0.
(Option 1 is not supported)
Value
0
1
0
1
0
(1)
Single sub-carrier frequency mode.
(Option 1 is not supported)
High data rate mode.
(Option 0 is not supported)
Flags 5 to 8 meaning are according to
Flags 5 to 8 meaning are according to
No Protocol format extension. Must be set to 0.
(Option 1 is not supported)
Description
Description
Flags and error codes
Table 4
Table 5
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