SRI2K datasheet(30/45 Pages) STMICROELECTRONICS

Part #	SRI2K

Description	13.56 MHz short-range contactless memory chip with 2048-bit EEPROM and anticollision functions

PDF	45 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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SRI2K commands

SRI2K

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Doc ID 15779 Rev 3

8.4

Select(Chip_ID) command

Command code = 0Eh

The Select() command allows the SRI2K to enter the Selected state. Until this command is

issued, the SRI2K will not accept any other command, except for Initiate(), Pcall16() and

Slot_marker(). The Select() command returns the 8 bits of the Chip_ID value. An SRI2K in

Selected state, that receives a Select() command with a Chip_ID that does not match its

own is automatically switched to Deselected state.

Figure 32.

Select request format

Request parameter:

●

8-bit Chip_ID stored during the anticollision sequence

Figure 33.

Select response format

Response parameters:

●

Chip_ID of the selected tag. Must be equal to the transmitted Chip_ID

Figure 34.

Select frame exchange between reader and SRI2K

SOF

Select

CRCL

CRCH

EOF

AI07677b

0Eh

8 bits

Chip_ID

SOF

Chip_ID

CRCL

CRCH

EOF

AI07671

8 bits

ai15584

Reader

SRI2K

SOF

Chip_ID

CRCL CRCH EOF

<-t0-><-t1->

SOF

0Eh

CRCL

CRCH EOF

Chip_ID

SRI2K Datasheet(PDF) 30 Page - STMicroelectronics

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