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MFRC522 Datasheet(PDF) 11 Page - NXP Semiconductors |
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MFRC522 Datasheet(HTML) 11 Page - NXP Semiconductors |
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11 / 109 page  112132 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 3.2 — 22 May 2007 11 of 109 NXP Semiconductors MFRC522 Contactless Reader IC 9. MFRC522 Register SET 9.1 MFRC522 Registers Overview Table 5: MFRC522 Registers Overview Addr (hex) Register Name Function Page 0: Command and Status 0 Reserved Reserved for future use 1 CommandReg Starts and stops command execution 2 ComlEnReg Controls bits to enable and disable the passing of Interrupt Requests 3 DivlEnReg Controls bits to enable and disable the passing of Interrupt Requests 4 ComIrqReg Contains Interrupt Request bits 5 DivIrqReg Contains Interrupt Request bits 6 ErrorReg Error bits showing the error status of the last command executed 7 Status1Reg Contains status bits for communication 8 Status2Reg Contains status bits of the receiver and transmitter 9 FIFODataReg In- and output of 64 byte FIFO buffer A FIFOLevelReg Indicates the number of bytes stored in the FIFO B WaterLevelReg Defines the level for FIFO under- and overflow warning C ControlReg Contains miscellaneous Control Registers D BitFramingReg Adjustments for bit oriented frames E CollReg Bit position of the first bit collision detected on the RF-interface F Reserved Reserved for future use Page 1: Command 0 Reserved Reserved for future use 1 ModeReg Defines general modes for transmitting and receiving 2 TxModeReg Defines the transmission data rate and framing 3 RxModeReg Defines the receive data rate and framing 4 TxControlReg Controls the logical behavior of the antenna driver pins TX1 and TX2 5 TxASKReg Controls the setting of the TX modulation 6 TxSelReg Selects the internal sources for the antenna driver 7 RxSelReg Selects internal receiver settings 8 RxThresholdReg Selects thresholds for the bit decoder 9 DemodReg Defines demodulator settings A Reserved Reserved for future use B Reserved Reserved for future use C MfTxReg Controls some MIFARE® communication transmit parameters D MfRxReg Controls some MIFARE® communication receive parameters E Reserved Reserved for future use F SerialSpeedReg Selects the speed of the serial UART interface Page 2: CFG 0 Reserved Reserved for future use |
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