EMBESTATMELSAM9G45全功能評(píng)估開發(fā)解決方案關(guān)鍵詞：Atmel,EMBEST,SAM9G45EMBEST公司的ATMELSAM9G45全功能評(píng)估板的主頻高達(dá)400MHz，可支持WinCE和Linux操作系統(tǒng)的開發(fā)板調(diào)試，帶有256MBNandFlash，2MBNorFlash，512KBEEPROM，4MB數(shù)據(jù)閃存，以及2個(gè)64MB的DDR2SDRAM，并帶有豐富的功能擴(kuò)展如高速USB2.0（480MHz），音頻輸入，音頻輸出，10/100Mbps網(wǎng)絡(luò)，JTAG調(diào)試接口，DBGU串口，MicroSD卡接口，SD/MMC卡接口，CMOS攝像頭接口，支持8位/12位視頻數(shù)據(jù)采集,主要用在工業(yè)應(yīng)用如建筑物自動(dòng)化,數(shù)據(jù)采集,POS終端,告警系統(tǒng)和醫(yī)療設(shè)備.本文介紹了AT91SAM9G45主要特性,方框圖和ATMELSAM9G45ARM9評(píng)估板主要特性以及電路圖.

TheARM926EJ-SbasedAT91SAM9G45featuresthefrequentlydemandedcombinationofuserinterfacefunctionalityandhighdatarateconnectivity,includingLCDController,resistivetouchscreen,camerainterface,audio,Ethernet10/100andhighspeedUSBandSDIO.Withtheprocessorrunningat400MHzandmultiple100+Mbpsdatarateperipherals,theAT91SAM9G45hastheperformanceandbandwidthtothenetworkorlocalstoragemediatoprovideanadequateuserexperience.

TheAT91SAM9G45supportsthelatestgenerationofDDR2andNANDFlashmemoryinterfacesforprogramanddatastorage.Aninternal133MHzmulti-layerbusarchitectureassociatedwith37DMAchannels,adualexternalbusinterfaceanddistributedmemoryincludinga64-KByteSRAMwhichcanbeconfiguredasatightlycoupledmemory(TCM)sustainsthehighbandwidthrequiredbytheprocessorandthehighspeedperipherals.

TheI/Ossupport1.8Vor3.3Voperation,whichareindependentlyconfigurableforthememoryinterfaceandperipheralI/Os.Thisfeaturecompletelyeliminatestheneedforanyexternallevelshifters.Inadditionitsupports0.8ballpitchpackageforlowcostPCBmanufacturing.

TheAT91SAM9G45powermanagementcontrollerfeaturesefficientclockgatingandabatterybackupsectionminimizingpowerconsumptioninactiveandstandbymodes.

AT91SAM9G45主要特性:

?400MHzARM926EJ-S?ARM®Thumb®Processor

–32KBytesDataCache,32KBytesInstructionCache,MMU

?Memories

–DDR2Controller4-bankDDR2/LPDDR,SDRAM/LPSDR

–ExternalBusInterfacesupporting4-bankDDR2/LPDDR,SDRAM/LPSDR,StaticMemories,CompactFlash,SLCNANDFlashwithECC

–One64-KByteinternalSRAM,single-cycleaccessatsystemspeedorprocessorspeedthroughTCMinterface

–One64-KByteinternalROM,embeddingbootstraproutine

?Peripherals

–LCDControllersupportingSTNandTFTdisplaysupto1280*860

–ITU-RBT.601/656ImageSensorInterface

–USBDeviceHighSpeed,USBHostHighSpeedandUSBHostFullSpeedwithOn-ChipTransceiver

–10/100MbpsEthernetMACController

–TwoHighSpeedMemoryCardHosts(SDIO,SDCard,MMC)

–AC’97controller

–TwoMaster/SlaveSerialPeripheralInterfaces

–TwoThree-channel16-bitTimer/Counters

–TwoSynchronousSerialControllers(I2Smode)

–Four-channel16-bitPWMController

–TwoTwo-wireInterfaces

–FourUSARTswithISO7816,IrDA,ManchesterandSPImodes

–8-channel10-bitADCwith4-wireTouchScreensupport

?System

–133MHztwelve32-bitlayerAHBBusMatrix

–37DMAChannels

–BootfromNANDFlash,SDCard,DataFlash®orserialDataFlash

–ResetControllerwithon-chipPower-onReset

–Selectable32768HzLow-powerand12MHzCrystalOscillators

–InternalLow-power32kHzRCOscillator

–OnePLLforthesystemandone480MHzPLLoptimizedforUSBHighSpeedTwoProgrammableExternalClockSignalsAdvancedInterruptControllerandDebugUnit

–PeriodicIntervalTimer,WatchdogTimer,RealTimeTimerandRealTimeClock

?I/OFive32-bitParallelInput/OutputControllers

–160ProgrammableI/OLinesMultiplexedwithuptoTwoPeripheralI/OswithSchmitttriggerinput

?Package

–324-ballTFBGA,pitch0.8mm2012-3-710:53:16上傳下載附件(65.27KB)

圖1.AT91SAM9G45方框圖

ATMELSAM9G45ARM9評(píng)估板

TheATMELSAM9G45ARM9BoardisanARMembeddedevaluationboardproducedbyEmbest,integratetheATMELARM926EJ-S-basedprocessorAT91SAM9G45,operatingat400MHzfrequency,andcansupportWinCEandLinux.Theboardhas256MBNandFlash,1MBNorFlash,512KBEEPROM,4MBDataFlashand128MBDDR2SDRAM.TheboardfeaturesUSBHost,MiniUSB,SDCardinterface,Ethernetinterface,Audiointerface.

ATMELSAM9G45ARM9評(píng)估板主要特性:

􀁺AT91SAM9G45ARM32-bitCPU,400MHzmaximumfrequency

􀁺Aninternal64KBSRAM

􀁺Aninternal64KBROM

􀁺Anexternal256MBNandFlash

􀁺Anexternal1MBNorFlash

􀁺Anexternal4MBDataFlash

􀁺2external64MBDDR2SDRAM

􀁺2userbuttons

􀁺4UARTs

􀁺Awakeupbutton

􀁺Aresetbutton

ARTCwithbackupbattery

AMICROAudioinput

􀁺APHONEAudiooutput

􀁺LCDinterface

􀁺AMicroSDcardconnector

􀁺ASD/M