基于S3C2440A嵌入式系统的硬件设计

:2009-04-29.:(05CA28);(08XS171).293Vo.l29No.320096JournalofHuanggangNormalUniversityJun.2009S3C2440A李述良,冯杰,刘文进,漆进峰(,438000)本文采用Samsung公司S3C2440A微处理器设计了嵌入式系统硬件开发平台,给出了硬件结构设计思路,着重分析了以太网端口,USB接口,UART接口,含触摸屏的LCD接口,IIS音频接口和电源管理单元电路的设计方法,并总结了嵌入式系统测试和调试的基本方法嵌入式系统;ARM;硬件设计;S3C2440ATM02A1003-8078(2009)03-0037-05HardwaredesignforembeddedsystembasedonS3C2440ALIShu-liang,FENGJie,LIUWen-jin,QIJin-feng(CollegeofPhysicalScienceandTechnology,HuanggangNormalUniversity,Huangzhou438000,Hube,iChina)AbstractInthispaper,wedescribeadesignofembeddedsystemhardwaredevelopmentplatformbasedonSamsungCorporations'S3C2440Amicroprocessor,givetheideaforthedesign,especiallyfocusingonanaly-singthedesignmethodologyoftheEthernetports,USBinterfaces,UARTinterfaces,LCDinterfacewithtou-ch-screen,IISaudiointerfaceandpowersnapcircui,tandsummarizethebasicmethodoftestinganddebug-gingembeddedsystems.Keywordsembeddedsystem;ARM;hardwaredesign;S3C2440A,8,,32,32ARM32RISC,RISC[1],,,USB,UART,LCD,IIS11.1ARMARMAdvancedRISCMachines,,,1991ARM,,ARMARM,1,,ARM,ARM32RISC75%,ARM1.2ARMARMRISC,RISC,ARM,,ARM;Thumb(16)/ARM(32);,;;,;ARM1.3,[1],,1.4S3C2440AS3C2440ASamsung16/32ARM9,ARM16/32ARM920TRISC,,533MHz;[2]:(SDRAM);LCD(4KSTN256KTFT),1LCDDMA;4DMA;3UART(IrDA1.0,64TxFIFO64RxFIFO);2SPI;1IIC-BUS();1IIS-BUS;AC97;SD1.0MMC2.11;2USB1USB;4PWM1,;810ADC;RTC;(4096*4096);130I/O24[2],,,22.1,,,,,,PCB,,12.2:S3C2440A,;Flash:,;SDRAM:,;:12MHzPLLS3C244A0533MHz;JTAG:ARM20JTAG,S3C2440A3829JTAG,,JTAG:,:MAX8112.32.3.1网络接口设计S3C2440A,;,22RJ45,DM9000DM9000MACPHY,10/100MbpsPHY816,4KDwordSRA[3]:,PHY,;,2.3.2USB接口设计S3C2440AUSBHostUSBDevice,USBCPUS3C2440A33USBHOSTUSBDevice4RS232UART2.3.3RS232接口设计CPUCPU,,S3C2440AUART3,,DMA,UARTDMACPUUART[2]RS232SP3232EEN,CPUUARTRS232UART42.3.4液晶屏接口设计393,:S3C2440AS3C2440LCD,STNTFTLCD6I2SLCDLCD,LCD;5J43.3V5VLCD552.3.5I2S音频接口设计I2S,,CDI2S,,,I2S,(),I2S3,(continuousserialclock,SCK)(wordselec,tWS)(serialdata,SD)[4]I2S6WS,SDMSBLSB,MSBWS,PHILIPSUDA1341TSUDA1341TS,,PGA()AGC(),DSP()I2S7I2SPHILIPSUDA1341TS,MICROPHONESPEADER7UDA1341TSI2S2.3.6供电电路的设计5V1.5AAS2815AR-3.3IC,給实验3.3V;MAX8860EUA;5V3.3VLCD;89402983.3V91.25V33.1PCB,,;SJF2440H-JtagPCB,,;,3.2(1):,PCB,;;,;,;(2):,,5V,,,,,,,3.3PCSJF2440H-Jtag,,,,,S3C2440A,,,,,:[1].ARM[J].(SOC),2005,21(7-2):120-122.[2]SAMSUNGELECTRONICSDatasheet:S3C2440AUSER'MANUALRevision0.12,2004.[3]DAVICOMSemiconductorDatasheet:DM9000A-DS-P03Datasheet,2005.[4].ARM9[M].:,2006:10.责任编辑张所滨413,:S3C2440A