srix4k STMicroelectronics, srix4k Datasheet - Page 29

• Manufacturer Part Number: srix4k
• Description: 13.56mhz Short Range Contactless Memory Chip With 4096 Bit Eeprom, Anti-collision And Anti-clone Functions
• Manufacturer: STMicroelectronics

SRIX4K
9.1
INITIATE() command
Command Code = 06h - 00h
INITIATE() is used to initiate the anticollision sequence of the SRIX4K. On receiving the
INITIATE() command, all SRIX4K 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 SRIX4K 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 SRIX4K
Reader
SRIX4K
–
–
SOF
SOF
No parameter
Chip_ID of the SRIX4K
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
SRIX4K commands
CRC L CRC H EOF
EOF
AI07671
EOF
AI07670
AI07672b
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