SRI4K-SBN181GE STMICROELECTRONICS [STMicroelectronics], SRI4K-SBN181GE Datasheet - Page 27

• Manufacturer Part Number: SRI4K-SBN181GE
• Description: 13.56 MHz short-range contactless memory chip with 4096-bit EEPROM and anticollision functions
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

SRI4K
8.1
Initiate() command
Command code = 06h - 00h
Initiate() is used to initiate the anticollision sequence of the SRI4K. On receiving the Initiate()
command, all SRI4K devices in Ready state switch to Inventory state, set a new 8-bit
Chip_ID random value, and return their Chip_ID value. This command is useful when only
one SRI4K in Ready state is present in the reader field range. It speeds up the Chip_ID
search process. The Chip_slot_number is not used during Initiate() command access.
Figure 23. Initiate request format
Request parameter:
●
Figure 24. Initiate response format
Response parameter:
●
Figure 25. Initiate frame exchange between reader and SRI4K
Reader
SRI4K
No parameter
Chip_ID of the SRI4K
SOF
SOF
SOF
06h
06h
00h
Initiate
Chip_ID
8 bits
CRC L
00h
CRC H EOF
8 bits
CRC L
<-t 0 -><-t 1 ->
8 bits
CRC L
CRC H
8 bits
SOF Chip_ID
CRC H
8 bits
SRI4K commands
EOF
CRC L CRC H EOF
AI07671
EOF
AI07670b
AI10884b
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