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Melexis公司的MLX90132是13.56MHz全集成的多協(xié)議NFC/RFID收發(fā)器,可處理亞載波頻率106kHz到848kHz,波特速率高達(dá)848kbps.雙路驅(qū)動(dòng)器架構(gòu)把外接元件數(shù)降到最少,能向合適的天線負(fù)載提供高達(dá)70mW RF功率,和ISO/IEC 18092 (NFC), ISO/IEC 14443 A1與B2, ISO/IEC 15693以及ISO/IEC 18000-3 模式1兼容.主要用在汽車接入和起動(dòng), 汽車發(fā)動(dòng)機(jī)防盜,汽車診斷和汽車租賃.本文介紹了MLX90132主要特性和優(yōu)勢, 簡化方框圖, 典型應(yīng)用電路, 外接天線網(wǎng)絡(luò)和天線電路框圖和并聯(lián)接收的天線電路框圖. The MLX90132 is a 13.56MHz, fully integrated, multi-protocol RFID/NFC transceiver IC. It has been designed to handle sub-carrier frequencies from 106 to 848 kHz and baud rates up to 848kbit/s. The dual driver architecture of the MLX90132 requires minimal external support components and allows the transmitter to provide up to 70 milliwatts RF power to an appropriate antenna load. This delivered power is suitable for most short to mid range applications. The MLX90132 embeds tag emulation functionality for NFC support. Enhanced tag and field detection capabilities provide significant power consumption reduction in RFID reader configuration and in NFC mode. The digital section of the MLX90132 handles the low protocol layers from API to physical layer using advanced bit and frame decoding functions. It contains a digital demodulator based on subcarrier detection and a programmable bit/symbol encoder/decoder. It also encodes and decodes the start and stop bits, parity bits, extra guard time (EGT), start and end of frame (SOF/EOF) and CRC. Its 256 bytes buffer allows buffering of an entire RFID frame. The SPI/UART communication ports guarantee easy interface with the majority of microcontrollers, especially the low cost ones. MLX90132主要特性和優(yōu)勢： _ Conforms with ISO/IEC 18092 (NFC) _ Conforms with ISO/IEC 14443 A1 and B2, _ Conforms with ISO/IEC 15693 _ Conforms with ISO/IEC 18000-3 mode 1 _ Standard SPI interface with 256 Bytes Buffer _ High speed communication (848kbit/s) _ Embedded RF field and TAG detectors MLX90132應(yīng)用： • Car access and start • Personalization of car settings • Car diagnostics • Car lent 
圖1。MLX90132簡化方框圖
圖2。MLX90132典型應(yīng)用電路
圖3。MLX90132外接天線網(wǎng)絡(luò)
圖4。MLX90130/32天線電路框圖
圖5。MLX90130/32天線電路框圖（并聯(lián)接收電路）
圖6.NFC閱讀器在汽車中應(yīng)用
圖7. 汽車NFC/RFID無線接入控制示例 詳情請見: 
MLX90132_Datasheet_Rev005.pdf
(893.99 KB)
http://www.melexis.com/Assets/MLX90132-datasheet-6058.aspx |
