Jennic JN5148 ZigBee PRO网络应用方案

JennicJN5148ZigBeePRO网络应用方案Jennic公的JN5148是超低功耗高性能无线控制器,目标应用于ZigBeePRO网络.器件采用增强的32位RISC处理器,集成了2.4GHzIEEE802.15.4兼容的收发器,128KBROM,128KBRAM,以及各种丰富的模拟和数字接口.JN5148具有28位AES安全处理器,MAC加速器,500和667kbps数据速率,工作电压2.0V到3.6V,主要应用在ZigBeePRO网络,智能读表如AMR,家庭和建筑物自动化,工业系数,远程信息处理,遥控,游戏外设等.本文介绍了JN5148主要特性,方框图,单端无线电架构图,基带处理器框图,安全处理器架构,SPI外设连接图,定时器单元和UART方框图,模拟外设方框图和PCB天线参考模块电路图以及元件列表.

TheJN5148-001isanultralowpower,highperformancewirelessmicrocontrollertargetedatZigBeePROnetworkingapplications.Thedevicefeaturesanenhanced32-bitRISCprocessorofferinghighcodingefficiencythroughvariablewidthinstructions,amulti-stageinstructionpipelineandlowpoweroperationwithprogrammableclockspeeds.Italsoincludesa2.4GHzIEEE802.15.4complianttransceiver,128kBofROM,128kBofRAM,andarichmixofanalogueanddigitalperipherals.Thelargememoryfootprintallowsthedevicetorunbothanetworkstack,e.g.ZigBeePRO,andanembeddedapplicationorinaco-processormode.Theoperatingcurrentisbelow18mA,allowingoperationdirectfromacoincell.

EnhancedperipheralsincludelowpowerpulsecountersrunninginsleepmodedesignedforpulsecountinginAMRapplicationsandauniqueTimeofFlightrangingengine,allowingaccuratelocationservicestobeimplementedonwirelesssensornetworks.Italsoincludesa4-wireI2Saudiointerface,tointerfacedirectlytomainstreamaudioCODECs,aswellasconventionalMCUperipherals.

JN5148主要特性:收发器

•2.4GHzIEEE802.15.4compliant

•TimeofFlightrangingengine

•128-bitAESsecurityprocessor

•MACacceleratorwithpacketformatting,CRCs,addresscheck,auto-acks,timers

•500&667kbpsdataratemodes

•Integratedsleeposcillatorforlowpower

•Onchippowerregulationfor2.0Vto3.6Vbatteryoperation

•Deepsleepcurrent100nA

•Sleepcurrentwithactivesleeptimer1.25μA

•<$0.50externalcomponentcost

•Rxcurrent17.5mA

•Txcurrent15.0mA

•Receiversensitivity-95dBm

•Transmitpower2.5dBm

MCU特性:

•Lowpower32-bitRISCCPU,4to32MHzclockspeed

•Variableinstructionwidthforhighcodingefficiency

•Multi-stageinstructionpipeline

•128kBROMand128kBRAMforbootloadedprogramcode&data

•JTAGdebuginterface

•4-input12-bitADC,212-bitDACs,2comparators

•3applicationtimer/counters,

•2UARTs

•SPIportwith5selects

•2-wireserialinterface

•4-wiredigitalaudiointerface

•Watchdogtimer

•Lowpowerpulsecounters

•Upto21DIO

主要优势:

•Singlechipintegratestransceiverandmicrocontrollerforwirelesssensornetworks

•LargememoryfootprinttorunZigBeePROtogetherwithanapplication

•Verylowcurrentsolutionforlongbatterylife

•Highlyfeatured32-bitRISCCPUforhighperformanceandlowpower

•SystemBOMislowincomponentcountandcost

•Extensiveuserperipherals

JN5148主要应用:

•Robustandsecurelowpowerwirelessapplications

•ZigBeePROnetworks

•Smartmetering(e.g.AMR)

•Homeandcommercialbuildingautomation

•LocationAwareservices–e.g.AssetTracking

•Industrialsystems

•Telemetry

•RemoteControl

•Toysandgamingperipherals

图1.JN5148方框图

图2.JN5148单端无线电架构图

图3.JN5148基带处理器框图

图4.JN5148安全处理器架构

图5.JN5148SPI方框图

图6.JN5148典型SPI外设连接图

图7.JN5148定时器单元方框图

图8.JN5148UART方框图

图9.J