SRI512-SBN181GE STMICROELECTRONICS [STMicroelectronics], SRI512-SBN181GE Datasheet - Page 31
SRI512-SBN181GE
Manufacturer Part Number
SRI512-SBN181GE
Description
13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.SRI512-SBN181GE.pdf
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SRI512
8.3
Slot_marker(SN) command
Command code = x6h
The SRI512 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 SRI512 compares its Chip_slot_number
value with the Slot_number value given in the command code. If they match, the SRI512
returns its Chip_ID value. If not, the SRI512 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 SRI512 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 SRI512
Reader
SRI512
b
with fixed value 6.
b
15. The value 0 is reserved by the Pcall16() command.
x: Slot number
Chip_ID of the SRI512
3
7
to b
to b
SOF
0
4
: 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
<-t 0 ->
8 bits
CRC L
8 bits
CRC L
<-t 1 ->
SOF
CRC H
8 bits
CRC H
Chip_ID
8 bits
CRC L CRC H
SRI512 commands
EOF
EOF
AI07671
AI07675b
AI10944
EOF
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