mfrc531 NXP Semiconductors, mfrc531 Datasheet - Page 74

• Manufacturer Part Number: mfrc531
• Description: Iso/iec 14443 Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 129. MFRC531 commands overview
[1]
[2]
MFRC531_34
Product data sheet
PUBLIC
Command
Transceive
WriteE2
ReadE2
LoadKeyE2
LoadKey
Authent1
Authent2
LoadConfig
CalcCRC
This command is the combination of the Transmit and Receive commands.
Relates to MIFARE Mini/MIFARE 1K/MIFARE 4K security.
[1]
01h
07h
12h
Value Action
1Eh
03h
0Bh
19h
0Ch
14h
transmits data from FIFO buffer to the card and
automatically activates the receiver after
transmission. The receiver waits until the time defined
in the RxWait register has elapsed before starting.
See
reads data from the FIFO buffer and writes it to the
EEPROM. See
reads data from the EEPROM and sends it to the
FIFO buffer. See
Remark: Keys cannot be read back
copies a key from the EEPROM into the key buffer
See
reads a key from the FIFO buffer and loads it into the
key buffer
Remark: The key has to be prepared in a specific
format (refer to
16)
performs the first part of card authentication using the
Crypto1 algorithm
performs the second part of card authentication using
the Crypto1 algorithm
page
reads data from EEPROM and initializes the
MFRC531 registers. See
activates the CRC coprocessor
Remark: The result of the CRC calculation is read
from the CRCResultLSB and CRCResultMSB
registers. See
Section 11.2.3 on page
Section 11.6.1 on page
89.
[2]
. See
Section 11.4.2 on page
Section 9.2.3.1 “Key format” on page
Section 11.3.1 on page
Section 11.3.2 on page
Section 11.6.2 on page
[2]
. See
[2]
…continued
. See
Section 11.4.1 on page
Section 11.6.3 on page
Rev. 3.4 — 26 January 2010
82.
88.
Section 11.6.4 on
056634
87.
84.
86.
88.
86.
89.
[2]
FIFO communication
Arguments and data
sent
data stream
start address LSB
start address MSB
data byte stream
start address LSB
start address MSB
number of data bytes
start address LSB
start address MSB
byte 0 LSB
byte 1
…
byte 10
byte 11 MSB
card Authent1 command -
card block address
card serial number
LSB
card serial number
byte 1
card serial number
byte 2
card serial number
MSB
-
start address LSB
start address MSB
data byte stream
ISO/IEC 14443 reader IC
MFRC531
© NXP B.V. 2010. All rights reserved.
Data received
data stream
-
data bytes
-
-
-
-
-
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