Melexis公司的MLX90132是13.56MHz全集成的多協議NFC/RFID收發器,可處理亞載波頻率106kHz到848kHz,波特速率高達848kbps.雙路驅動器架構把外接元件數降到最少,能向合適的天線負載提供高達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, 汽車發動機防盜,汽車診斷和汽車租賃.本文介紹了MLX90132主要特性和優勢, 簡化方框圖, 典型應用電路, 外接天線網絡和天線電路框圖和并聯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典型應用電路
圖3。MLX90132外接天線網絡
圖4。MLX90130/32天線電路框圖
圖5。MLX90130/32天線電路框圖（并聯接收電路）
圖6.NFC閱讀器在汽車中應用
圖7. 汽車NFC/RFID無線接入控制示例
詳情請見:
http://www.melexis.com/Assets/MLX90132-datasheet-6058.aspx
