SRIX4K datasheet(32/50 Pages) STMICROELECTRONICS

No de pièce	SRIX4K

Description	13.56 MHz short-range contactless memory chip with 4096-bit EEPROM, anticollision and anti-clone functions

PDF	50 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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SRIX4K commands

SRIX4K

32/50

9.4

SELECT(Chip_ID) command

Command Code = 0Eh

The SELECT() command allows the SRIX4K to enter the SELECTED state. Until this

command is issued, the SRIX4K 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 SRIX4K 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 SRIX4K

SOF

SELECT

CRCL

CRCH

EOF

AI07677

0Eh

8 bits

Chip_ID

SOF

Chip_ID

CRCL

CRCH

EOF

AI07671

8 bits

AI07678b

Reader

SRIX4K

SOF

Chip_ID

CRCL CRCH EOF

<-t0-><-t1->

SOF

0Eh

CRCL

CRCH EOF

Chip_ID

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