Rainbow Electronics MAX66120 - Manual (Page 12)

MAX66120
ISO 15693-Compliant 1Kb Memory Fob
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selected state and transition to the ready or the quiet
state upon receiving the Reset to Ready command sent
in any address mode or the Stay Quiet command sent
in the addressed mode. A slave also transitions from
selected to ready upon receiving a Select command if
the UID in the request is different from the slave’s own
UID. In this case the master’s intention is to transition another slave with the matching UID to the selected
state. If the slave already in the selected state does not
recognize the command, e.g., due to a bit error, two
slaves could be in the selected state. To prevent this
from happening, the master should use the Reset to
Ready or the Stay Quiet command to transition a slave
out of the selected state.
Figure 16. ISO 15693 State Transitions Diagram
POWER-OFF
READY
SELECTED QUIET
IN FIELD
NOTE 1
NOTE 3
OUT OF FIELD
OUT OF FIELD
RESET TO READY
[N, A, S]
OUT OF FIELD
NOTE 2
RESPONSE LEGEND:
NOTE 1: THE SLAVE PROCESSES THE INVENTORY COMMAND AND OTHER COMMANDS PROVIDED THAT THEY ARE SENT IN THE [N] OR [A] ADDRESS MODE.
NOTE 2: THE SLAVE PROCESSES ONLY COMMANDS SENT IN THE [A] ADDRESS MODE.
NOTE 3: THE SLAVE PROCESSES THE INVENTORY COMMAND AND OTHER COMMANDS IN ANY ADDRESS MODE.
RESPONSE TO RESET TO READY
RESET TO READY [A]
MATCHING UID
STAY QUIET [A]
MATCHING UID
SELECT [A],
NONMATCHING UID
RESPONSE TO SELECT
NO RESPONSE
STAY QUIET [A] MATCHING UID
SELECT [A]
MATCHING UID
SELECT [A] MATCHING UID
ADDRESS MODE LEGEND:
[N] NONADDRESSED
[A] ADDRESSED
[S] SELECTED