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  • Create a 1-Wire Master with Xilinx PicoBlaze

    Abstract: Designers who must interface 1-Wire temperature sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to drive a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wire slave devices. The systemimplements a 1-Wire master connected to a UART and outputs temperature to a PC from the DS28EA00 temperaturesensor. In addition, high/low alarm outputs are displayed from the DS28EA00 PIO pins using LEDs.

    標(biāo)簽: PicoBlaze Create Master Xilinx

    上傳時(shí)間: 2013-11-05

    上傳用戶:a6697238

  • AstroII-EVB-F1K(A)-L144開發(fā)板用戶指南

        AstroII-EVB-F1K(A)-L144開發(fā)板用戶指南

    標(biāo)簽: AstroII-EVB-F 144 開發(fā)板 用戶

    上傳時(shí)間: 2013-11-22

    上傳用戶:zhichenglu

  • Employing a Single-Chip Transceiver in Femtocell Base-Station Applications

    Abstract: This application note discusses the development and deployment of 3G cellular femtocell base stations. The technicalchallenges for last-mile residential connectivity and adding system capacity in dense urban environments are discussed, with 3Gfemtocell base stations as a cost-effective solution. Maxim's 3GPP TS25.104-compliant transceiver solution is presented along withcomplete radio reference designs such as RD2550. For more information on the RD2550, see reference design 5364, "FemtocellRadio Reference Designs Using the MAX2550–MAX2553 Transceivers."

    標(biāo)簽: Base-Station Applications Single-Chip Transceiver

    上傳時(shí)間: 2013-11-07

    上傳用戶:songrui

  • The Linux Programming Interface - A Linux and UNIX System Programming Handbook

    The Linux Programming Interface - A Linux and UNIX System

    標(biāo)簽: Programming Linux Interface Handbook

    上傳時(shí)間: 2013-11-10

    上傳用戶:asdstation

  • UHF讀寫器設(shè)計(jì)中的FM0解碼技術(shù)

       針對(duì)UHF讀寫器設(shè)計(jì)中,在符合EPC Gen2標(biāo)準(zhǔn)的情況下,對(duì)標(biāo)簽返回的高速數(shù)據(jù)進(jìn)行正確解碼以達(dá)到正確讀取標(biāo)簽的要求,提出了一種新的在ARM平臺(tái)下采用邊沿捕獲統(tǒng)計(jì)定時(shí)器數(shù)判斷數(shù)據(jù)的方法,并對(duì)FM0編碼進(jìn)行解碼。與傳統(tǒng)的使用定時(shí)器定時(shí)采樣高低電平的FM0解碼方法相比,該解碼方法可以減少定時(shí)器定時(shí)誤差累積的影響;可以將捕獲定時(shí)器數(shù)中斷與數(shù)據(jù)判斷解碼相對(duì)分隔開,使得中斷對(duì)解碼影響很小,實(shí)現(xiàn)捕獲與解碼的同步。通過實(shí)驗(yàn)表明,這種方法提高了解碼的效率,在160 Kb/s的接收速度下,讀取一張標(biāo)簽的時(shí)間約為30次/s。 Abstract:  Aiming at the requirement of receiving correctly decoded data from the tag under high-speed communication which complied with EPC Gen2 standard in the design of UHF interrogator, the article introduced a new technology for FM0 decoding which counted the timer counter to judge data by using the edge interval of signal capture based on the ARM7 platform. Compared with the traditional FM0 decoding method which used the timer timed to sample the high and low level, the method could reduce the accumulation of timing error and could relatively separate capture timer interrupt and the data judgment for decoding, so that the disruption effect on the decoding was small and realizd synchronization of capture and decoding. Testing result shows that the method improves the efficiency of decoding, at 160 Kb/s receiving speed, the time of the interrogator to read a tag is about 30 times/s.

    標(biāo)簽: UHF FM0 讀寫器 解碼技術(shù)

    上傳時(shí)間: 2013-11-10

    上傳用戶:liufei

  • LPC1850 Cortex-M3內(nèi)核微控制器數(shù)據(jù)手冊(cè)

    The LPC1850/30/20/10 are ARM Cortex-M3 based microcontrollers for embeddedapplications. The ARM Cortex-M3 is a next generation core that offers systemenhancements such as low power consumption, enhanced debug features, and a highlevel of support block integration.The LPC1850/30/20/10 operate at CPU frequencies of up to 150 MHz. The ARMCortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture withseparate local instruction and data buses as well as a third bus for peripherals. The ARMCortex-M3 CPU also includes an internal prefetch unit that supports speculativebranching.The LPC1850/30/20/10 include up to 200 kB of on-chip SRAM data memory, a quad SPIFlash Interface (SPIFI), a State Configuration Timer (SCT) subsystem, two High-speedUSB controllers, Ethernet, LCD, an external memory controller, and multiple digital andanalog peripherals.

    標(biāo)簽: Cortex-M 1850 LPC 內(nèi)核微控制器

    上傳時(shí)間: 2014-12-31

    上傳用戶:zhuoying119

  • LPC4300系列ARM雙核微控制器產(chǎn)品數(shù)據(jù)手冊(cè)

    The LPC4350/30/20/10 are ARM Cortex-M4 based microcontrollers for embeddedapplications. The ARM Cortex-M4 is a next generation core that offers systemenhancements such as low power consumption, enhanced debug features, and a highlevel of support block integration.The LPC4350/30/20/10 operate at CPU frequencies of up to 150 MHz. The ARMCortex-M4 CPU incorporates a 3-stage pipeline, uses a Harvard architecture withseparate local instruction and data buses as well as a third bus for peripherals, andincludes an internal prefetch unit that supports speculative branching. The ARMCortex-M4 supports single-cycle digital signal processing and SIMD instructions. Ahardware floating-point processor is integrated in the core.The LPC4350/30/20/10 include an ARM Cortex-M0 coprocessor, up to 264 kB of datamemory, advanced configurable peripherals such as the State Configurable Timer (SCT)and the Serial General Purpose I/O (SGPIO) interface, two High-speed USB controllers,Ethernet, LCD, an external memory controller, and multiple digital and analog peripherals

    標(biāo)簽: 4300 LPC ARM 雙核微控制器

    上傳時(shí)間: 2013-10-28

    上傳用戶:15501536189

  • MR-E-A伺服手冊(cè)

    MR-E-A伺服手冊(cè)

    標(biāo)簽: MR-E-A 伺服

    上傳時(shí)間: 2013-10-30

    上傳用戶:半熟1994

  • MR-E-A伺服手冊(cè)

    MR-E-A伺服手冊(cè)

    標(biāo)簽: MR-E-A 伺服

    上傳時(shí)間: 2013-10-16

    上傳用戶:liaocs77

  • Create a 1-Wire Master with Xilinx PicoBlaze

    Abstract: Designers who must interface 1-Wire temperature sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to drive a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wire slave devices. The systemimplements a 1-Wire master connected to a UART and outputs temperature to a PC from the DS28EA00 temperaturesensor. In addition, high/low alarm outputs are displayed from the DS28EA00 PIO pins using LEDs.

    標(biāo)簽: PicoBlaze Create Master Xilinx

    上傳時(shí)間: 2013-11-12

    上傳用戶:大三三

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