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SRI2K Folha de dados(PDF) 29 Page - STMicroelectronics

Nome de Peças SRI2K
Descrição Electrónicos  13.56 MHz short-range contactless memory chip with 2048-bit EEPROM and anticollision functions
PDF  45 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRI2K Folha de dados(HTML) 29 Page - STMicroelectronics

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SRI2K
SRI2K commands
Doc ID 15779 Rev 3
29/45
8.3
Slot_marker(SN) command
Command code = x6h
The SRI2K must be in Inventory state to interpret the Slot_marker(SN) command.
The Slot_marker byte code is divided into two parts:
●
b3 to b0: 4-bit command code
with fixed value 6.
●
b7 to b4: 4 bits known as the Slot_number (SN). They assume a value between 1 and
15. The value 0 is reserved by the Pcall16() command.
On receiving the Slot_marker() command, the SRI2K compares its Chip_slot_number value
with the Slot_number value given in the command code. If they match, the SRI2K returns its
Chip_ID value. If not, the SRI2K does not send any response.
The Slot_marker() command, used together with the Pcall16() command, allows the reader
to search for all the Chip_IDs when there are more than one SRI2K device in Inventory state
present in the reader field range.
Figure 29.
Slot_marker request format
Request parameter:
●
x: Slot number
Figure 30.
Slot_marker response format
Response parameters:
●
Chip_ID of the SRI2K
Figure 31.
Slot_marker frame exchange between reader and SRI2K
SOF
Slot_marker
CRCL
CRCH
EOF
AI07675b
X6h
8 bits
8 bits
SOF
Chip_ID
CRCL
CRCH
EOF
AI07671
8 bits
8 bits
8 bits
SOF
X6h
CRCL
CRCH EOF
ai15583
Reader
SRI2K
SOF
Chip_ID
CRCL CRCH
EOF
<-t0-><-t1->



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