sri4k STMicroelectronics, sri4k Datasheet - Page 33

• Manufacturer Part Number: sri4k
• Description: 13.56 Mhz Short-range Contactless Memory Chip With 4096-bit Eeprom And Anticollision Functions
• Manufacturer: STMicroelectronics

SRI4K
8.6
RESET_TO_INVENTORY() command
Command Code = 0Ch
On receiving the RESET_TO_INVENTORY() command, all SRI4K devices in SELECTED
state revert to INVENTORY state. The concerned SRI4K devices are thus resubmitted to
the anticollision sequence. This command is useful when two SRI4K devices with the same
8-bit Chip_ID happen to be in SELECTED state at the same time. Forcing them to go
through the anticollision sequence again allows the reader to generates new PCALL16()
commands and so, to set new random Chip_IDs.
The RESET_TO_INVENTORY() command does not generate a response.
All SRI4K devices that are not in SELECTED state ignore the RESET_TO_INVENTORY()
command.
Figure 38. RESET_TO_INVENTORY request format
Request parameter:
Figure 39. RESET_TO_INVENTORY Response Format
Figure 40. RESET_TO_INVENTORY frame exchange between Reader and SRI4K
Reader
SRI4K
–
No parameter
SOF
SOF
RESET_TO_INVENTORY
0Ch
CRC L
0Ch
CRC H EOF
No Response
8 bits
CRC L
CRC H
8 bits
No Response
EOF
SRI4K commands
AI10889
AI07680
AI07682
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