mfrc52301hn1-trayb NXP Semiconductors, mfrc52301hn1-trayb Datasheet - Page 69
mfrc52301hn1-trayb
Manufacturer Part Number
mfrc52301hn1-trayb
Description
Contactless Reader Ic
Manufacturer
NXP Semiconductors
Datasheet
1.MFRC52301HN1-TRAYB.pdf
(98 pages)
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NXP Semiconductors
MFRC523_33
Product data sheet
PUBLIC
10.3.1.1 Idle
10.3.1 MFRC523 command descriptions
10.1 General description
10.2 General behavior
10.3 MFRC523 command overview
The MFRC523 operation is determined by a state machine capable of performing a set of
commands. A command is executed by writing a command code (see
CommandReg register.
Arguments and/or data necessary to process a command are exchanged via the FIFO
buffer.
Table 149. Command overview
Places the MFRC523 in Idle mode. The Idle command also terminates itself.
Command
Idle
Mem
Generate RandomID
CalcCRC
Transmit
NoCmdChange
Receive
Transceive
-
MFAuthent
SoftReset
•
•
•
•
Each command that needs a data bit stream (or data byte stream) as an input
immediately processes any data in the FIFO buffer. An exception to this rule is the
Transceive command. Using this command, transmission is started with the
BitFramingReg register’s StartSend bit.
Each command that needs a certain number of arguments, starts processing only
when it has received the correct number of arguments from the FIFO buffer.
The FIFO buffer is not automatically cleared when commands start. This makes it
possible to write command arguments and/or the data bytes to the FIFO buffer and
then start the command.
Each command can be interrupted by the host writing a new command code to the
CommandReg register, for example, the Idle command.
All information provided in this document is subject to legal disclaimers.
Command
code
0000
0001
0010
0011
0100
0111
1000
1100
1101
1110
1111
Rev. 3.3 — 5 March 2010
115233
Action
no action, cancels current command execution
stores 25 bytes into the internal buffer
generates a 10-byte random ID number
activates the CRC coprocessor or performs a self test
transmits data from the FIFO buffer
no command change, can be used to modify the
CommandReg register bits without affecting the command,
for example, the PowerDown bit
activates the receiver circuits
transmits data from FIFO buffer to antenna and automatically
activates the receiver after transmission
reserved for future use
performs the MIFARE standard authentication as a reader
resets the MFRC523
Contactless reader IC
MFRC523
Table
© NXP B.V. 2010. All rights reserved.
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