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| Cypress CYRF6939无线USB解决方案 | |||||
作者:Cypress 文章来源:本站原创 点击数: 更新时间:2007-9-3 ![]() |
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WirelessUSB 特性如下: • 全球通用 • 低成本 • 针对电池供电设备进行了专门优化 • 双向/单向操作 • 多点到单点连接 • USB HID兼容性 • 支持同区域多个链接 (co-location) • 在噪声环境下性能稳定 • 无兼容性方面的问题 The CYRF6936 WirelessUSB™ LP radio is a second generation member of Cypress’s WirelessUSB Radio System-On-Chip (SoC) family. The CYRF6936 is interoperable with the first generation CYWUSB69xx devices. The CYRF6936 IC adds a range of enhanced features, including increased operating voltage range, reduced supply current in all operating modes, higher data rate options, and reduced crystal start up, synthesizer settling and link turnaround times. 主要性能: • 2.4 GHz Direct Sequence Spread Spectrum (DSSS) radio transceiver • Operates in the unlicensed worldwide Industrial, Scientific and Medical (ISM) band (2.400 GHz–2.483 GHz) 21 mA operating current (Transmit @ –5 dBm) Transmit power up to +4 dBm Receive sensitivity up to –97 dBm Sleep Current <1 μA Operating range: 10m+ DSSS data rates up to 250 kbps, GFSK data rate of 1 Mbps Low external component count Auto Transaction Sequencer (ATS) - no MCU intervention Framing, Length, CRC16, and Auto ACK Power Management Unit (PMU) for MCU/Sensor Fast Startup and Fast Channel Changes Separate 16-byte Transmit and Receive FIFOs AutoRate™ - dynamic data rate reception Receive Signal Strength Indication (RSSI) Serial Peripheral Interface (SPI) control while in sleep mode 4 MHz SPI microcontroller interface Battery Voltage Monitoring Circuitry Supports coin-cell operated applications Operating voltage from 1.8V to 3.6V Operating temperature from 0 to 70°C Space saving 40-pin QFN 6x6 mm package 应用: Wireless Keyboards and Mice Wireless Gamepads Remote Controls Toys VOIP and Wireless Headsets White Goods Consumer Electronics Home Automation Automatic Meter Readers Personal Health and Entertainment CYRF6939简化方框图: ![]() 下图是应用电路图: ![]() 下表是应用电路图中所用的材料清单(BOM): ![]() 详情请参阅CYRF6936数据表: http://download.cypress.com.edgesuite.net/design_resources/datasheets/contents/cyrf6936_8.pdf |
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