LRIS2K-A1S/1GE STMicroelectronics, LRIS2K-A1S/1GE Datasheet - Page 37

• Manufacturer Part Number: LRIS2K-A1S/1GE
• Description: IC MEMORY TAG 64BIT UID ADH ANT
• Manufacturer: STMicroelectronics
• Series: LRIS2Kr

Specifications of LRIS2K-A1S/1GE

• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: ISO15693, ISO18000-3, 2048-bits
• Package / Case: 76mm x 45mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5534-2

LRIS2K
12
LRIS2K protocol description
The Transmission protocol (or simply protocol) defines the mechanism used to exchange
instructions and data between the VCD and the LRIS2K, in both directions. It is based on
the concept of “VCD talks first”.
This means that an LRIS2K 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 request are contained in a frame. The frame delimiters (SOF, EOF)
are described in
Each request consists of:
●
●
●
●
●
●
●
Each request 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, each byte is 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 13.
Table 14.
Request SOF Request_flags
Response
a request from the VCD to the LRIS2K
a response from the LRIS2K 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
LRIS2K response frame format
Response
Section 8: LRIS2K to VCD
_flags
Figure 8
Figure
Figure 23
Figure 29
Parameters
Doc ID 13888 Rev 8
Command
10)
code
and
to
to
Figure
Figure
Figure
frames.
Parameters
9)
28)
34)
Data
Data
LRIS2K protocol description
2-byte CRC
2-byte CRC
Response
Request
EOF
EOF
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