SRI512-SBN181GE STMICROELECTRONICS [STMicroelectronics], SRI512-SBN181GE Datasheet - Page 29

• Manufacturer Part Number: SRI512-SBN181GE
• Description: 13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

SRI512
8.1
Initiate() command
Command code = 06h - 00h
Initiate() is used to initiate the anticollision sequence of the SRI512. On receiving the
Initiate() command, all SRI512 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 SRI512 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 SRI512
Reader
SRI512
No parameter
Chip_ID of the SRI512
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
SOF Chip_ID
CRC H
8 bits
CRC H
8 bits
SRI512 commands
CRC L CRC H EOF
EOF
EOF
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