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LRI1K Datasheet(PDF) 30 Page - STMicroelectronics

No. de pieza LRI1K
Descripción Electrónicos  1024-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant
PDF  86 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LRI1K Datasheet(HTML) 30 Page - STMicroelectronics

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Data storage format identifier (DSFID)
LRI1K
30/86
Doc ID 17170 Rev 3
9
Data storage format identifier (DSFID)
The data storage format identifier indicates how the data is structured in the LRI1K memory.
The logical organization of data can be known instantly using the DSFID.
It can be programmed and locked using the Write DSFID and Lock DSFID commands,
respectively. It is coded on one byte.
9.1
CRC
The CRC used in the LRI1K is calculated as per the definition in ISO/IEC 13239.
The initial register contents are all ones: "FFFF".
The two-byte CRC is appended to each request and response, within each frame, before
the EOF. The CRC is calculated on all the bytes between the SOF and the CRC field.
Upon reception of a request from the VCD, the LRI1K verifies that the CRC value is valid. If
it is invalid, the LRI1K discards the frame and does not answer to the VCD.
Upon reception of a response from the LRI1K, it is recommended that the VCD verifies
whether the CRC value is valid. If it is invalid, actions to be performed are left to the
discretion of the VCD designers.
The CRC is transmitted least significant byte first.
Each byte is transmitted least significant bit first.
Table 6.
CRC transmission rules
LSByte
MSByte
LSBit
MSBit LSBit
MSBit
CRC 16 (8bits)
CRC 16 (8 bits)



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