SRI4K-SBN181GE STMICROELECTRONICS [STMicroelectronics], SRI4K-SBN181GE Datasheet - Page 28

• Manufacturer Part Number: SRI4K-SBN181GE
• Description: 13.56 MHz short-range contactless memory chip with 4096-bit EEPROM and anticollision functions
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

SRI4K commands
8.2
28/45
Pcall16() command
Command code = 06h - 04h
The SRI4K must be in Inventory state to interpret the Pcall16() command.
On receiving the Pcall16() command, the SRI4K 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 (1111
Initiate() command is issued, or until the SRI4K is powered off. The new Chip_slot_number
value is then compared with the value 0000
value. If not, the SRI4K 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 SRI4K device in Inventory state
present in the reader field range.
Figure 26. Pcall16 request format
Request parameter:
●
Figure 27. Pcall16 response format
Response parameter:
●
Figure 28. Pcall16 frame exchange between reader and SRI4K
Reader
SRI4K
No parameter
Chip_ID of the SRI4K
SOF
SOF
SOF
06h
06h
04h
Pcall16
Chip_ID
8 bits
CRC L
04h
CRC H EOF
b
8 bits
b
CRC L
). The value is retained until a new Pcall16() or
. If they match, the SRI4K returns its Chip_ID
<-t 0 -> <-t 1 ->
8 bits
CRC L
SOF
CRC H
8 bits
Chip_ID
CRC H
8 bits
CRC L CRC H
EOF
AI07671
EOF
AI07673b
AI10885b
SRI4K
EOF