SRIX4K datasheet(30/47 Pages) STMICROELECTRONICS

Part #	SRIX4K

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

PDF	47 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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30 / 47 page

SRIX4K commands

SRIX4K

30/47

9.2

Pcall16() command

Command code = 06h - 04h

The SRIX4K must be in Inventory state to interpret the Pcall16() command.

On receiving the Pcall16() command, the SRIX4K first generates a new random

Chip_slot_number value (in the 4 least significant bits of the Chip_ID). Chip_slot_number

can take on a value between 0 an 15 (1111b). The value is retained until a new Pcall16() or

Initiate() command is issued, or until the SRIX4K is powered off. The new Chip_slot_number

value is then compared with the value 0000b. If they match, the SRIX4K returns its Chip_ID

value. If not, the SRIX4K does not send any response.

The Pcall16() command, used together with the Slot_marker() command, allows the reader

to search for all the Chip_IDs when there are more than one SRIX4K device in Inventory

state present in the reader field range.

Figure 27.

Pcall16 request format

Request parameter:

●

No parameter

Figure 28.

Pcall16 response format

Response parameter:

●

Chip_ID of the SRIX4K

Figure 29.

Pcall16 frame exchange between reader and SRIX4K

SOF

Pcall16

CRCL

CRCH

EOF

AI07673b

06h

04h

8 bits

SOF

Chip_ID

CRCL

CRCH

EOF

AI07671

8 bits

SOF

06h

CRCL

CRCH EOF

AI07674b

Reader

SRIX4K

SOF

Chip_ID

CRCL CRCH

EOF

<-t0-><-t1->

04h

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