NXP公司的CLRC663是用于13.56MHz无接触通信的高度集成收发器IC,工作电压3V-5.5V,支持ISO/IEC 14443A/MIFARE的读/写模式, ISO/IEC 14443B读/写模式, FeliCa读/写模式, ISO/IEC 15693 读/写模式, ICODE EPC UID/ EPC OTP读/写模式以及ISO/IEC 18000-3 Mode 3读/写模式. CLRC663支持高达848kbps的通信速率,SPI接口速率高达10Mbps,快速模式的I2C接口速率高达400kBd,RS232串行UART高达1228.8 kBd.本文介绍了CLRC663主要特性和优势,方框图,以及多种读/写模式的应用框图和典型应用电路.
The CLRC663 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 CLRC663 transceiver ICs support the following operating modes
• read/write mode supporting ISO/IEC 14443A/MIFARE
• read/write mode supporting ISO/IEC 14443B
• read/write mode supporting FeliCa scheme
• passive initiator mode according to NFCIP-1
• read/write mode supporting ISO/IEC 15693
• read/write mode supporting ICODE EPC UID/ EPC OTP
• read/write mode supporting ISO/IEC 18000-3 Mode 3
The CLRC663’s internal transmitter 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 module provides a robust and efficient implementation for demodulating and decoding signals from ISO 14443A/MIFARE compatible cards and transponders. The digital module manages the complete ISO 14443A framing and error detection functionality (parity and CRC).
The CLRC663 supports MIFARE 1K, MIFARE 4K, MIFARE Ultralight, MIFARE Ultralight C, MIFARE PLUS and MIFARE DESFire products. The CLRC663 supports contactless communication and uses the MIFARE higher transfer speeds of up to 848 kbit/s in both directions.
The CLRC663 supports all layers of the ISO/IEC 14443B reader/writer communication scheme provided that:
• additional components, such as oscillators, power supplies and coils etc. are correctly Implemented
• standard protocols are used, such as ISO/IEC 14443-4 and/or ISO/IEC 14443B anticollision
The use of this NXP IC according to ISO/IEC 14443B could infringe upon third party patent rights. Consequently, a purchaser must ensure that the appropriate third party patent licenses are obtained.
When the CLRC663 transceiver IC is enabled in the read/write mode for FeliCa, it supports the FeliCa communication scheme. The receiver part provides the demodulation and decoding circuitry for FeliCa coded signals. The digital part handles the FeliCa framing and error detection such as CRC. The CLRC663 supports contactless
communication using FeliCa higher transfer speeds of up to 424 kbit/s in both directions.
The CLRC663 accommodates future development by supporting the P2P passive initiator mode in accordance with NFCIP-1.
The CLRC663 supports vicinity protocol according ISO/IEC15693, EPC UID and ISO/IEC 18000-3 mode 3. The complete vicinity product family of NXP is supported and enable a readability for mid-ranger reader applications
The following host interfaces are provided:
• Serial Peripheral Interface (SPI)
• Serial UART (similar to RS232 with voltage levels dependent on pin voltage supply)
• I2C-bus interface (two version are implemented: I2C and I2CL)
CLRC663主要特性和优势:
Highly integrated analog circuitry to demodulate and decode responses
Buffered output drivers for connecting an antenna with the minimum number of external components
Supports ISO/IEC 14443 A/MIFARE, ISO/IEC 14443 B and FeliCa, P2P passive initiator mode in accordance with NFCIP-1
Supports ISO/IEC15693, ICODE EPC UID and ISO/IEC 18000-3 Mode 3
Typical operating distance in read/write mode for communication to a ISO/IEC 14443A/MIFARE up to 12 cm depending on the antenna size and tuning
Supports MIFARE Classic encryption in read/write mode
Supports higher transfer speed communication up to 848 kbit/s
Supported host interfaces
SPI up to 10 Mbit/s
Two I2C-bus interfaces up to 400 kBd in Fast mode, up to 1000 kBd in Fast mode plus
RS232 Serial UART up to 1228.8 kBd, with voltage levels dependent on pin voltage supply
FiFo buffer handles 512 byte send and receive
Flexible interrupt modes
Hard Power Down
图1.CLRC663方框图
图2.CLRC663读/写模式
图3.CLRC663 ISO/IEC 14443 A/MIFARE 读/写模式通信框图
图4.CLRC663 FeliCa读/写通信框图
图5.CLRC663接收器电路图
图6.CLRC663典型应用天线电路图
