SRI4K_11 datasheet(33/46 Pages) STMICROELECTRONICS

부품명	SRI4K

상세설명	13.56 MHz short-range contactless memory chip with 4096-bit EEPROM and anticollision functions

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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SRI4K

SRI4K commands

Doc 11605 Rev 5

33/46

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:

●

No parameter

Figure 39.

Reset_to_inventory response format

Figure 40.

Reset_to_inventory frame exchange between reader and SRI4K

SOF

RESET_TO_INVENTORY

CRCL

CRCH

EOF

AI07682

0Ch

8 bits

AI07680

No Response

SOF

0Ch

CRCL

CRCH EOF

AI10889

Reader

SRI4K

No Response

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