LRIS2K_11 datasheet(13/98 Pages) STMICROELECTRONICS

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LRIS2K

Description

Doc ID 13888 Rev 9

13/98

1.2

Commands

The LRIS2K supports the following commands:

●

Inventory, used to perform the anticollision sequence.

●

Stay Quiet, used to put the LRIS2K in quiet mode, where it does not respond to any

inventory command.

●

Select, used to select the LRIS2K. After this command, the LRIS2K processes all

Read/Write commands with Select_flag set.

●

Reset To Ready, used to put the LRIS2K in the ready state.

●

Read Block, used to output the 32 bits of the selected block and its locking status.

●

Write Block, used to write the 32-bit value in the selected block, provided that it is not

locked.

●

Lock Block, used to lock the selected block. After this command, the block cannot be

modified.

●

Write AFI, used to write the 8-bit value in the AFI register.

●

Lock AFI, used to lock the AFI register.

●

Write DSFID, used to write the 8-bit value in the DSFID register.

●

Lock DSFID, used to lock the DSFID register.

●

Get System Info, used to provide the system information value

●

Get Multiple Block Security Status, used to send the security status of the selected

block.

●

Initiate, used to trigger the tag response to the Inventory Initiated sequence.

●

Inventory Initiated, used to perform the anticollision sequence triggered by the Initiate

command.

●

Kill, used to definitively deactivate the tag.

●

Write Password, used to write the 32 bits of the selected password.

●

Lock Password, used to write the Protect Status bits of the selected block.

●

Present Password, enables the user to present a password to unprotect the user

blocks linked to this password.

●

Fast Initiate, used to trigger the tag response to the Inventory Initiated sequence.

●

Fast Inventory Initiated, used to perform the anticollision sequence triggered by the

Initiate command.

●

Fast Read Single Block, used to output the 32 bits of the selected block and its

locking status.

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