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LRIS2K датащи(PDF) 42 Page - STMicroelectronics

номер детали LRIS2K
подробное описание детали  2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and Password, ISO15693 and ISO18000-3 Mode 1 compliant
PDF  98 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LRIS2K датащи(HTML) 42 Page - STMicroelectronics

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Request format
LRIS2K
42/98
Doc ID 13888 Rev 9
15
Request format
The request consists of:
●
an SOF
●
flags
●
a command code
●
parameters and data
●
a CRC
●
an EOF
15.1
Request_flags
In a request, the “flags” field specifies the actions to be performed by the LRIS2K and
whether corresponding fields are present or not.
The flag field consists of eight bits.
The bit 3 (Inventory_flag) of the request_flag defines the contents of the 4 MSBs (bits 5 to
8).
When bit 3 is reset (0), bits 5 to 8 define the LRIS2K selection criteria.
When bit 3 is set (1), bits 5 to 8 define the LRIS2K Inventory parameters.
Table 16.
General request format
S
O
F
Request_flags
Command code
Parameters
Data
CRC
E
O
F
Table 17.
Definition of request_flags 1 to 4
Bit No
Flag
Level
Description
Bit 1
Subcarrier_flag(1)
1.
Subcarrier_flag refers to the LRIS2K-to-VCD communication.
0
A single subcarrier frequency is used by the LRIS2K
1
Two subcarrier are used by the LRIS2K
Bit 2
Data_rate_flag(2)
2.
Data_rate_flag refers to the LRIS2K-to-VCD communication
0
Low data rate is used
1
High data rate is used
Bit 3
Inventory_flag
0
The meaning of flags 5 to 8 is described in Table 18
1
The meaning of flags 5 to 8 is described in Table 19
Bit 4
Protocol Extension_flag
0
No Protocol format extension



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