Rainbow Electronics MAX66040 - Manual (Page 14)

MAX66040
ISO/IEC 14443 Type B-Compliant
Secure Memory
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IDLE
READY
POWER-OFF
WAITING FOR
SLOT-MARKER*
ACTIVE HALT
ANY OTHER COMMAND
IN FIELD
ANY OTHER
COMMAND
OR CASE
OUT OF FIELD
(FROM ANY STATE)
ANY OTHER COMMAND
RESPONSE LEGEND:
*WHEN ENTERING “WAITING FOR SLOT-MARKER,” EACH TAG SELECTS A RANDOM NUMBER R IN THE RANGE OF 1 TO “NUMBER OF SLOTS.”
DESELECT
(SPECIAL CASE OF A BLOCK TRANSMISSION
PROTOCOL FUNCTION)
ATQB RESPONSE 1
A
a
b
s
A
B
S
S
B MS
1
1
1
4
3
2
ATTRIB RESPONSE 2
HLTB RESPONSE 3
DESELECT RESPONSE 4
ANY OTHER
COMMAND
OR CASE
ANY OTHER
COMMAND OR CASE
ATTRIB WITH
MATCHING PUPI
HLTB WITH
MATCHING PUPI
EXECUTIVE BLOCK
TRANSMISSION
PROTOCOL FUNCTION
Figure 17. ISO/IEC 14443 Type B State Transitions Diagram
NAME DESCRIPTION RESULT
A (AFI MISMATCH) REQB/WUPB WITH NONMATCHING AFI
a WUPB WITH NONMATCHING AFI
RETURN TO IDLE
B (BYPASS SM) REQB/WUPB WITH MATCHING AFI AND [(N = 1) OR [R = 1)]
b WUPB WITH MATCHING AFI AND [(N = 1) OR [R = 1)]
TRANSITION DIRECTLY TO READY
S (SLOT-MARKER) REQB/WUPB WITH MATCHING AFI AND (N 1) AND (R 1)
s WUPB WITH MATCHING AFI AND (N 1) AND (R 1)
WAIT FOR MATCHING SLOT NUMBER
MS (MATCHING SLOT) SLOT-MARKER COMMAND WITH SLOT NUMBER = R TRANSITION TO READY WITH MATCHING SLOT-MARKER
CONDITIONS LEGEND:
ABRIDGED DATA SHEET