Rainbow Electronics MAX66000 - Manual (Page 8)

INDICATOR UID
00h (8 Bytes)
Response Information Field for the Get UID Command (No Error)
MAX66000
ISO/IEC 14443 Type B-Compliant
64-Bit UID
8 _______________________________________________________________________________________
Detailed Command Descriptions
Get System Information
This command allows the master to retrieve technical
information about the MAX66000. In the response, the
least significant UID byte is transmitted first. The
response is adapted from ISO 15693-3, Section 10. The
IC reference code indicates the die revision in hexa-
decimal format, such as A1h, A2h, B1h, etc. To receive
the system information, issue a request with the com-
mand code 2Bh in the request information field.
Get UID
This command allows the master to retrieve the
device’s unique identification number, UID. In the
response, the least significant UID byte is transmitted
first. To read the UID, issue a request with the com-
mand code 30h in the request information field.
ISO/IEC 14443-3 Type B Initialization
and Anticollision Protocol
Before an ISO/IEC 14443-compliant RF device gives
access to its memory, a communication path between
the master and the RF device must be established.
Initially, the master has no information whether there are
any RF devices in the field of its antenna. To find out
whether there are one or more RF devices compliant to a
known standard in the field, the master uses a standard-
specific initialization and anticollision protocol. The
ISO/IEC 14443 Type B protocol defines six states:
POWER-OFF, IDLE, WAITING FOR SLOT-MARKER,
READY, HALT, and ACTIVE. Figure 16 shows these
states and the conditions under which a slave transitions
between states. For most cases, letters surrounded by
small circles reference the condition under which a tran-
sition occurs. The conditions are explained in the legend
to Figure 16. Table 1 explains terms that are used in the
anticollision protocol and in the network function com-
mand description.
INDICATOR
INFO
FLAGS
UID (DUMMY) AFI
NUMBER OF
BLOCKS
MEMORY BLOCK
SIZE
IC REFERENCE
00h 0Fh (8 Bytes) (1 Byte) (1 Byte) 02h 07h (1 Byte)
Response Information Field for the Get System Information Command (No Error)