LRI2K-W4/3GE STMicroelectronics, LRI2K-W4/3GE Datasheet - Page 35

• Manufacturer Part Number: LRI2K-W4/3GE
• Description: IC EEPROM 2048BIT 97PF 8UFDFPN
• Manufacturer: STMicroelectronics

Specifications of LRI2K-W4/3GE

• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: ISO15693, ISO18000-3
• Package / Case: 8-UFDFPN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LRI2K
13
13.1
Request format
The request consists of:
●
●
●
●
●
●
Table 10.
Request flags
In a request, the "flags" field specifies the actions to be performed by the LRI2K and
whether corresponding fields are present or not.
The flags 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 LRI2K selection criteria.
When bit 3 is set (1), bits 5 to 8 define the LRI2K Inventory parameters.
Table 11.
1. Subcarrier_flag refers to the LRI2K-to-VCD communication.
2. Data_rate_flag refers to the LRI2K-to-VCD communication
Bit 1
Bit 2
Bit 3
Bit 4
Bit No
O
S
F
an SOF
flags
a command code
parameters and data
a CRC
an EOF
Subcarrier_flag
Data_rate_flag
Inventory flag
Protocol Extension flag
Request flags
General request format
Definitions of request flags 1 to 4
Flag
(2)
(1)
Command code
Level
0
1
0
1
0
1
0
A single subcarrier frequency is used by the LRI2K
Two subcarriers are used by the LRI2K
Low data rate is used
High data rate is used
The meaning of Flags 5 to 8 is described in
The meaning of Flags 5 to 8 is described in
No Protocol format extension
Parameters
Description
Data
Request format
Table 12
Table 13
CRC
35/86
O
E
F