SRI4K datasheet(27/45 Pages) STMICROELECTRONICS

Part #	SRI4K

Description	13.56 MHz short-range contactless memory chip with 4096-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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SRI4K

SRI4K commands

27/45

8.1

Initiate() command

Command code = 06h - 00h

Initiate() is used to initiate the anticollision sequence of the SRI4K. On receiving the Initiate()

command, all SRI4K 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 SRI4K 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:

●

No parameter

Figure 24.

Initiate response format

Response parameter:

●

Chip_ID of the SRI4K

Figure 25.

Initiate frame exchange between reader and SRI4K

SOF

Initiate

CRCL

CRCH

EOF

AI07670b

06h

00h

8 bits

SOF

Chip_ID

CRCL

CRCH

EOF

AI07671

8 bits

AI10884b

Reader

SRI4K

SOF

Chip_ID

CRCL CRCH EOF

<-t0-><-t1->

SOF

06h

CRCL

CRCH EOF

00h

SRI4K Datasheet(PDF) 27 Page - STMicroelectronics

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