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LRI2K Datasheet(PDF) 40 Page - STMicroelectronics

No. de pieza LRI2K
Descripción Electrónicos  13.56 MHz, 2048-bit EEPROM tag IC with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant
PDF  89 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LRI2K Datasheet(HTML) 40 Page - STMicroelectronics

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Anti-collision
LRI2K
40/89
Figure 39.
Principle of comparison between the mask, the slot number and the UID
The AFI field is present if the AFI_flag is set.
The pulse is generated according to the definition of the EOF in ISO/IEC 15693-2.
The first slot starts immediately after the reception of the request EOF. To switch to the next
slot, the VCD sends an EOF.
The following rules and restrictions apply:
●
if no LRI2K answer is detected, the VCD may switch to the next slot by sending an EOF,
●
if one or more LRI2K answers are detected, the VCD waits until the complete frame
has been received before sending an EOF for switching to the next slot.
AI06682
Mask value received in the Inventory command
0000 0100 1100 1111 b 16 bits
The Mask value less the padding 0s is loaded
into the Tag comparator
100 1100 1111 b 11 bits
The Slot counter is calculated
xxxx
Nb_slots_flags = 0 (16 slots), Slot Counter is 4 bits
The Slot counter is concatened to the Mask value
xxxx 100 1100 1111 b
Nb_slots_flags = 0
15 bits
The concatenated result is compared with
the least significant bits of the Tag UID.
xxxx xxxx ..... xxxx xxxx x xxx xxxx xxxx xxxx
64 bits
LSB
MSB
b
LSB
MSB
LSB
MSB
LSB
MSB
b0
b63
Compare
Bits ignored
UID
4 bits



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