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PN512是NXP公司的高度集成的13.56MHz無接觸通信收發(fā)器,支持四種不同的工作模式:讀/寫模式支持ISO/IEC14443A/MIFARE和FeliCa方案以及支持ISO/IEC14443B,卡運(yùn)作模式支持14443A/MIFARE和FeliCa方案和支持NFCIP-1模式.本文介紹PN512主要特性, 方框圖, ISO/IEC14443A/MIFARE和FeliCa讀/寫模式通信框圖, 共同讀/寫選通與主控制器連接框圖以及典型應(yīng)用電路圖.
The PN512 is a highly integrated transceiver?IC for contactless communication at 13.56?MHz. This transceiver?IC utilizes an outstanding modulation and demodulation concept completely integrated for different kinds of contactless communication methods and protocols at 13.56?MHz.
The PN512 transceiver?ICs support 4 different operating modes
?Reader/Writer mode supporting ISO/IEC?14443A/MIFARE and FeliCa scheme
?Reader/Writer mode supporting ISO/IEC?14443B
?Card Operation mode supporting ISO/IEC?14443A/MIFARE and FeliCa scheme
?NFCIP-1 mode
Enabled in Reader/Writer mode for ISO/IEC?14443A/MIFARE, the PN512’s internal transmitter part is able to drive a reader/writer antenna designed to communicate with ISO/IEC?14443A/ MIFARE cards and transponders without additional active circuitry. The receiver part provides a robust and efficient implementation of a demodulation and decoding circuitry for signals from ISO/IEC?14443A/MIFARE compatible cards and transponders. The digital part handles the complete ISO/IEC?14443A framing and error detection (Parity & CRC).
The PN512 supports MIFARE 1?KB or MIFARE 4 KB emulation products. The PN512 supports contactless communication using MIFARE higher transfer speeds up to 424?kbit/s in both directions.
Enabled in Reader/Writer mode for FeliCa, the PN512 transceiver?IC supports the FeliCa communication scheme. The receiver part provides a robust and efficient implementation of the demodulation and decoding circuitry for FeliCa coded signals. The digital part handles the FeliCa framing and error detection like CRC. The PN512 supports contactless communication using FeliCa Higher transfer speeds up to 424?kbit/s in both directions.
The PN512 supports all layers of the ISO/IEC?14443B reader/writer communication scheme, given correct implementation of additional components, like oscillator, power supply, coil etc. and provided that standardized protocols, e.g. like ISO/IEC?14443-4 and/or ISO/IEC?14443B anticollision are correctly implemented.
In Card Operation mode, the PN512 transceiver?IC is able to answer to a reader/writer command either according to the FeliCa or ISO/IEC?14443A/MIFARE card interface scheme. The PN512 generates the digital load modulated signals and in addition with an external circuit the answer can be sent back to the reader/writer. A complete card functionality is only possible in combination with a secure IC using the S2C interface.
Additionally, the PN512 transceiver?IC offers the possibility to communicate directly to an NFCIP-1 device in the NFCIP-1 mode. The NFCIP-1 mode offers different communication mode and transfer speeds up to 424?kbit/s according to the Ecma 340 and ISO/IEC?18092 NFCIP-1 Standard. The digital part handles the complete NFCIP-1 framing and error detection.
Various host controller interfaces are implemented:
?8-bit parallel interface1
?SPI interface
?serial UART (similar to RS232 with voltage levels according pad voltage supply)
?I2C interface.
圖1.PN512方框圖
圖2.PN512 ISO/IEC14443A/MIFARE讀/寫模式通信框圖
圖3.PN512 FeliCa讀/寫模式通信框圖
圖4.PN512共同讀/寫選通與主控制器連接框圖
圖5.PN512典型應(yīng)用電路圖
The PN512 is a highly integrated transceiver?IC for contactless communication at 13.56?MHz. This transceiver?IC utilizes an outstanding modulation and demodulation concept completely integrated for different kinds of contactless communication methods and protocols at 13.56?MHz.
The PN512 transceiver?ICs support 4 different operating modes
?Reader/Writer mode supporting ISO/IEC?14443A/MIFARE and FeliCa scheme
?Reader/Writer mode supporting ISO/IEC?14443B
?Card Operation mode supporting ISO/IEC?14443A/MIFARE and FeliCa scheme
?NFCIP-1 mode
Enabled in Reader/Writer mode for ISO/IEC?14443A/MIFARE, the PN512’s internal transmitter part is able to drive a reader/writer antenna designed to communicate with ISO/IEC?14443A/ MIFARE cards and transponders without additional active circuitry. The receiver part provides a robust and efficient implementation of a demodulation and decoding circuitry for signals from ISO/IEC?14443A/MIFARE compatible cards and transponders. The digital part handles the complete ISO/IEC?14443A framing and error detection (Parity & CRC).
The PN512 supports MIFARE 1?KB or MIFARE 4 KB emulation products. The PN512 supports contactless communication using MIFARE higher transfer speeds up to 424?kbit/s in both directions.
Enabled in Reader/Writer mode for FeliCa, the PN512 transceiver?IC supports the FeliCa communication scheme. The receiver part provides a robust and efficient implementation of the demodulation and decoding circuitry for FeliCa coded signals. The digital part handles the FeliCa framing and error detection like CRC. The PN512 supports contactless communication using FeliCa Higher transfer speeds up to 424?kbit/s in both directions.
The PN512 supports all layers of the ISO/IEC?14443B reader/writer communication scheme, given correct implementation of additional components, like oscillator, power supply, coil etc. and provided that standardized protocols, e.g. like ISO/IEC?14443-4 and/or ISO/IEC?14443B anticollision are correctly implemented.
In Card Operation mode, the PN512 transceiver?IC is able to answer to a reader/writer command either according to the FeliCa or ISO/IEC?14443A/MIFARE card interface scheme. The PN512 generates the digital load modulated signals and in addition with an external circuit the answer can be sent back to the reader/writer. A complete card functionality is only possible in combination with a secure IC using the S2C interface.
Additionally, the PN512 transceiver?IC offers the possibility to communicate directly to an NFCIP-1 device in the NFCIP-1 mode. The NFCIP-1 mode offers different communication mode and transfer speeds up to 424?kbit/s according to the Ecma 340 and ISO/IEC?18092 NFCIP-1 Standard. The digital part handles the complete NFCIP-1 framing and error detection.
Various host controller interfaces are implemented:
?8-bit parallel interface1
?SPI interface
?serial UART (similar to RS232 with voltage levels according pad voltage supply)
?I2C interface.
圖1.PN512方框圖
圖2.PN512 ISO/IEC14443A/MIFARE讀/寫模式通信框圖
圖3.PN512 FeliCa讀/寫模式通信框圖
圖4.PN512共同讀/寫選通與主控制器連接框圖
圖5.PN512典型應(yīng)用電路圖
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