R
EM4223
Reader Command
Transponder Operation in
ISO Mode
Transponder Operation in
Fast Supertagꢀ Mode
INIT_ROUND
Initialises the start of the arbitration sequence
and tells the Transponder over how many slots
to randomise the transmit slot selection.
Configures the Transponder to transmit the
SUID data or the full 128 bit User Data to the
Reader dependent on the SUID parameter in
the command. Moves the Transponder from the
READY to the ROUND_ACTIVE states if the
Transponders AFI matches the AFI in the
command or if the AFI in the command = 0x00 .
If the AFI in the command is non-zero and does
not match the AFI in the Tag, causes the Tag to
move from the ROUND_ACTIVE to the READY
states.
Not supported in Fast Supertagꢀ Mode –
causes the Transponder to immediately
switch to ISO Mode.
BEGIN_ROUND
Initialises the start of the arbitration sequence
and tells the Transponder over how many slots
to randomise the transmit slot selection.
Configures the transponder to transmit the
SUID data where DSFID field is replaced by
AFI field, or the full 128 bit User Data to the
reader, depending in the SUID parameter in the
command. Moves the Transponder from the
READY to the ROUND_ACTIVE states if the
number of bits of the Transponders User Data
specified in the command is identical to the
matching data in the command Mask
Not supported in Fast Supertagꢀ Mode –
causes the Transponder to immediately
switch to ISO Mode.
parameter .
INIT_ROUND_ALL
Initialises the start of the arbitration sequence
and tells the Transponder over how many slots
to randomise the transmit slot selection.
Not supported in Fast Supertagꢀ Mode –
causes the Transponder to immediately
switch to ISO Mode.
Configures the Transponder to transmit the
SUID data or the full 128 bit User Data to the
Reader dependent on the SUID parameter in
the command. Moves the Transponder from the
READY to the ROUND_ACTIVE states.
NEW_ROUND
Causes the EM4223 to enter a new Round and
to change the number of pseudo-slots over
which it randomises its transmissions. Tags in
the READY state will ignore this command.
Causes the EM4223 to change the number of
pseudo-slots over which it randomises its
transmissions. Tags in the READY state will
ignore this command.
WAKE_UP_FST
Not supported in ISO Mode – causes the
Transponder to immediately switch to Fast
Supertagꢀ Mode.
Initialises the start of the Fast Supertagꢀ
arbitration sequence and tells the
Transponder over how many slots to
randomise the transmit slot selection.
Configures the Transponder to transmit the
full 128 bit User Data to the Reader
irrespective of the SUID parameter in the
command. Moves the Tag from the
ROUND_STANDBY to the ROUND_ACTIVE
states or from the READY to the
ROUND_ACTIVE states if the Mask
parameter matches, else moves Tag to the
READY state.
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