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ABRIDGED DATA SHEET
ISO/IEC 14443 Type B-Compliant
Secure Memory
Table 14. ISO/IEC 14443 Type B Technical Terms
TERM
ACTIVE
ADC
AFI
ATQB
ATTRIB
BPSK
CID
EOF
DESELECT
fc
FO
fs
FWI
FWT
HALT
HLTB
IDLE
INF
MBLI
N
NAD
POWER-OFF
PUPI
R
READY
REQB
RF
S
SLOT-MARKER
SOF
TR0
TR1
WAITING FOR
SLOT-MARKER
WUPB
DESCRIPTION
One of the slave ’s six states. In this state, the memory and control function commands and deselect apply.
Application Data Coding. 2-Bit field of the 3rd protocol info byte of the ATQB response.
Application Family Identifier. 1-Byte field used in the REQB/WUPB request to preselect slaves.
Answer to Request, Type B. Response to REQB, WUPB, and SLOT-MARKER command.
Slave Selection Command, Type B. Used to transition a slave from READY to the ACTIVE state.
Binary Phase-Shift Keying Modulation
Card Identifier. 4-Bit temporary identification number assigned to a slave through the ATTRIB command, used
in conjunction with the block transmission protocol.
End of Frame
Slave Deselection Command. Transitions the slave from the ACTIVE state to the HALT state.
Carrier Frequency = 13.56MHz
Frame Option. 2-Bit field of the 3rd protocol info byte of the ATQB response.
Subcarrier Frequency = f c /16 = 847.5kHz
Frame-Waiting Time Integer. 4-bit field of the 3rd protocol info byte of the ATQB response.
Frame-Waiting Time. Calculated from FWI.
One of the slave ’s six states. The master puts a slave in this state to park it.
Halt Command, Type B
One of the slave ’s six states. In this state, the slave has power and is waiting for action.
Information Field for Higher Layer Protocol (per ISO/IEC 14443-4)
Maximum Buffer Length Index of Slave (per ISO/IEC 14443-4). 4-Bit field of the first protocol info byte of the
ATQB response.
Number of Anticollision Slots (or response probability per slot)
Node Address (per ISO/IEC 14443-4)
One of the slave ’s six states. In this state, the slave has no power and consequently cannot do anything.
Pseudo Unique Identifier. 4-Byte field of the ATQB response.
4-Bit Random Number Chosen by a Slave When Processing the REQB or WUPB Command
One of the slave ’s six states; official name is READY-DECLARED SUBSTATE. In this state, the slave has
identified itself and is waiting for transition to ACTIVE (memory and control functions) or HALT (parking).
Request Command, Type B. Used to probe the RF field for the presence of slave devices.
Radio Frequency
Slot Number. 4-Bit field sent to slave with SLOT-MARKER command.
Command used in the time-slot approach to identify slaves in the RF field
Start of Frame
Guard Time per ISO/IEC 14443-2
Synchronization Time per ISO/IEC 14443-2
One of the slave ’s six states; official name is READY-REQUESTED SUBSTATE. In this state, the slave is
waiting to be called by its random number R to transition to READY.
Wake-Up Command, Type B. Similar to REQB, required to wake up slaves in the HALT state.
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