mfrc522 NXP Semiconductors, mfrc522 Datasheet - Page 75

• Manufacturer Part Number: mfrc522
• Description: Contactless Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
112132
Product data sheet
18.3.1.10 SoftReset Command
This command terminates automatically when the MIFARE
bit MFCrypto1On in the Status2Reg register is set to
This command does not terminate automatically when the card does not answer,
therefore the timer should be initialized to automatic mode. In this case, beside the bit
IdleIrq, the bit TimerIrq can be used as termination criteria. During authentication
processing the bit RxIrq and bit TxIrq are blocked. The Crypto1On bit is only valid after
termination of the authent command (either after processing the protocol or after writing
IDLE to the command register).
In case there is an error during authentication, the bit ProtocolErr in the ErrorReg register
is set to
This command performs a reset of the device. The configuration data of the internal buffer
remains unchanged. All registers are set to the reset values. This command terminates
automatically when finished.
Remark: The SerialSpeedReg register is reset and therefore the serial data rate is set to
logic
9.6 kbps.
1 and the bit Crypto1On in register Status2Reg is set to
Rev. 3.2 — 22 May 2007
logic
1.
®
card is authenticated and the
Contactless Reader IC
MFRC522
logic
© NXP B.V. 2007. All rights reserved.
0.
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