SRI4K-SBN181GE STMICROELECTRONICS [STMicroelectronics], SRI4K-SBN181GE Datasheet - Page 29

• 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
8.3
Slot_marker(SN) command
Command code = x6h
The SRI4K must be in Inventory state to interpret the Slot_marker(SN) command.
The Slot_marker byte code is divided into two parts:
●
●
On receiving the Slot_marker() command, the SRI4K compares its Chip_slot_number value
with the Slot_number value given in the command code. If they match, the SRI4K returns its
Chip_ID value. If not, the SRI4K does not send any response.
The Slot_marker() command, used together with the Pcall16() 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 29. Slot_marker request format
Request parameter:
●
Figure 30. Slot_marker response format
Response parameters:
●
Figure 31. Slot_marker frame exchange between reader and SRI4K
Reader
SRI4K
b
with fixed value 6.
b
15. The value 0 is reserved by the Pcall16() command.
x: Slot number
Chip_ID of the SRI4K
3
7
to b
to b
0
4
SOF
: 4-bit command code
: 4 bits known as the Slot_number (SN). They assume a value between 1 and
SOF
SOF
X6h
CRC L
Chip_ID
Slot_marker
8 bits
X6h
CRC H EOF
8 bits
CRC L
<-t 0 -><-t 1 ->
8 bits
CRC L
SOF
CRC H
8 bits
Chip_ID
CRC H
8 bits
CRC L CRC H
SRI4K commands
EOF
EOF
AI07671
AI10886
EOF
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