Rainbow Electronics MAX66140 - Manual (Page 15)

MAX66140
ISO 15693-Compliant Secure Memory
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Request Data for the Select Command*
Reset to Ready
This command addresses an individual slave and transitions it to the ready state. To address a slave in the quiet
state, the request must be sent in the addressed mode (Select_flag bit = 0, Address_flag bit = 1). To address a
slave in the selected state, the request can be sent in any address mode. The slave transitioning to the ready state
sends a response.
Request Data for the Reset to Ready Command*
Memory and Control Function Commands
The command descriptions show the data fields of the request and response data packets. To create the complete
frame, an SOF, 16-bit CRC, and EOF must be added (see Figure 5). ISO 15693 defines three address modes,
selected, addressed, and nonaddressed, which are specified through the setting of the Select_flag bit and the
Address_flag bit. The memory and control function commands can be issued in any address mode. To access
slaves in the quiet state, the addressed mode is required. The addressed mode requires that the master include the
slave’s UID in the request.
REQUEST FLAGS COMMAND UID
(1 Byte) 25h (8 Bytes)
* If this command is processed without any error, the slave responds with a response flags byte of 00h.
REQUEST FLAGS COMMAND UID**
(1 Byte) 26h (8 Bytes)
* If this command is processed without any error, the slave responds with a response flags byte of 00h.
** The UID is transmitted only in the addressed mode.
ABRIDGED DATA SHEET