Datasheet

PN512 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 5.2 — 16 June 2016
111352 105 of 137
NXP Semiconductors
PN512
Full NFC Forum-compliant frontend
MIFARE (Card Operation mode):
The MIFARE anticollision is finished and the command has automatically changed to
transceive. The FIFO contains the first command after the Select. The bit TargetActivated
in the Status2Reg register is set to logic 1.
Felica (Card Operation mode):
The FeliCa polling command is finished and the command has automatically changed to
transceive. The FIFO contains the first command followed after the Poling by the FeliCa
protocol. The bit TargetActivated in the Status2Reg register is set to logic 1.
18.3.1.10 MFAuthent
This command manages MIFARE authentication to enable a secure communication to
any MIFARE Mini, MIFARE 1K and MIFARE 4K card. The following data is written to the
FIFO buffer before the command can be activated:
• Authentication command code (60h, 61h)
• Block address
• Sector key byte 0
• Sector key byte 1
• Sector key byte 2
• Sector key byte 3
• Sector key byte 4
• Sector key byte 5
• Card serial number byte 0
• Card serial number byte 1
• Card serial number byte 2
• Card serial number byte 3
In total 12 bytes are written to the FIFO.
Remark: When the MFAuthent command is active all access to the FIFO buffer is
blocked. However, if there is access to the FIFO buffer, the ErrorReg register’s WrErr bit is
set.
This command automatically terminates when the MIFARE card is authenticated and the
Status2Reg register’s MFCrypto1On bit is set to logic 1.
This command does not terminate automatically if the card does not answer, so the timer
must be initialized to automatic mode. In this case, in addition to the IdleIRq bit, the
TimerIRq bit can be used as the termination criteria. During authentication processing, the
RxIRq bit and TxIRq bit are blocked. The Crypto1On bit is only valid after termination of
the MFAuthent command, either after processing the protocol or writing Idle to the
CommandReg register.
If an error occurs during authentication, the ErrorReg register’s ProtocolErr bit is set to
logic 1 and the Status2Reg register’s Crypto1On bit is set to logic 0.