LRI2K-A1S/1GE STMicroelectronics, LRI2K-A1S/1GE Datasheet - Page 30

• Manufacturer Part Number: LRI2K-A1S/1GE
• Description: IC MEMORY TAG 64BIT UID ADH ANT
• Manufacturer: STMicroelectronics
• Series: LRI2Kr

Specifications of LRI2K-A1S/1GE

• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: ISO15693, ISO18000-3, 64-bits
• Package / Case: 76mm x 45mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5533-2

LRI2K protocol description
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LRI2K protocol description
The transmission protocol (or simply protocol) defines the mechanism used to exchange
instructions and data between the VCD and the LRI2K, in both directions. It is based on the
concept of "VCD talks first".
This means that an LRI2K will not start transmitting unless it has received and properly
decoded an instruction sent by the VCD. The protocol is based on an exchange of:
●
●
Each request and each response are contained in a frame. The frame delimiters (SOF,
EOF) are described in
Each request consists of:
●
●
●
●
●
●
●
Each response consists of:
●
●
●
●
●
●
The protocol is bit-oriented. The number of bits transmitted in a frame is a multiple of eight
(8), i.e. an integer number of bytes.
A single-byte field is transmitted least significant bit (LSBit) first. A multiple-byte field is
transmitted least significant byte (LSByte) first, with each byte transmitted least significant
bit (LSBit) first.
The setting of the flags indicates the presence of the optional fields. When the flag is set (to
one), the field is present. When the flag is reset (to zero), the field is absent.
Table 7.
Table 8.
Request SOF Request Flags
Response
a request from the VCD to the LRI2K
a response from the LRI2K to the VCD
a request SOF (see
flags
a command code
parameters, depending on the command
application data
a 2-byte CRC
a request EOF (see
an answer SOF (see
flags
parameters, depending on the command
application data
a 2-byte CRC
an Answer EOF (see
SOF
VCD request frame format
LRI2K response frame format
Response
Flags
Section 6: LRI2K to VCD
Figure 9
Figure
Figure 24
Figure 30
Parameters
Command
11)
code
and
to
to
Figure
Figure
Figure
Parameters
10)
29)
35)
frames.
Data
Data
2 byte CRC
2 byte CRC
Response
Request
EOF
EOF
LRI2K