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  • A pdf regarding, reading of bar codes from mobile phones. All types of bar codes can be read from th

    A pdf regarding, reading of bar codes from mobile phones. All types of bar codes can be read from the mobile phones. It includes the details regarding, how to convert the bar codes into appropriate formats and then to verify it for the geniality.

    標簽: codes from bar regarding

    上傳時間: 2013-12-26

    上傳用戶:xinzhch

  • pll 相關paper

    pll 相關paper,可參考! 內含各模塊架構及模擬,歡迎參考!

    標簽: PLL

    上傳時間: 2015-05-10

    上傳用戶:jeryir

  • CPCI_E標準規范 CompactPCI? Express Specification

    CPCI_E標準規范 CompactPCI? Express SpecificationThe documents in this section may be useful for reference when reading the specification. The  revision listed for each document is the latest revision at the time this specification was published.  Newer revisions of these documents may exist, so refer to the newest revision. Many of these  documents are referenced throughout this specification. Refer to the newest revision of the  document unless a specific revision is referenced. ? PCI Express Base Specification 3.0. PCI Special Interest Group (PCI-SIG). ? PCI Express Card Electromechanical (CEM) Specification 3.0. PCI Special Interest Group  (PCI-SIG). ? PCI Express to PCI/PCI-X Bridge Specification, Rev. 1.0. PCI Special Interest Group  (PCI-SIG). ? PCI Express Jitter White Paper. PCI Special Interest Group (PCI-SIG). ? PCIe Rj Dj BER White Paper. PCI Special Interest Group (PCI-SIG). ? PHY Electrical Test Specification for PCI Express Architecture. PCI Special Interest Group  (PCI SIG). ? System Management Bus (SMBus) Specification, Version 2.0. Smart Battery System  Implementer’

    標簽: CPCIE

    上傳時間: 2022-02-23

    上傳用戶:

  • FAT32中文版.rar

    hardware white paper-fat32中文資料,有參考價值

    標簽: FAT 32

    上傳時間: 2013-04-24

    上傳用戶:624971116

  • 基于ARM的多對象遠程抄表系統集中器的設計與實現

    智能電表、水表、煤/燃氣表、熱量表等大量地出現在人們的生活中,同時這些儀表的抄錄工作變得越來越煩瑣,工作量大,工作效率低,不僅給用戶帶來不便,而且會存在漏抄、誤抄、估抄的現象。隨著電子技術、通信技術和計算機技術的飛速發展,人工抄表已經逐步被自動抄表所代替。 集中器是一個數據集中處理器,是多對象自動抄表系統的通信橋梁,負責對各智能表的數據進行采集、存儲和管理,及時有效地向上位機傳輸數據并執行上位機發送的指令。提高多對象集中器數據處理能力,有效完成上下行通信是多對象自動抄表系統AMRS(Automation Meter Reading System)目前需要解決的關鍵問題。 本文針對多對象集中器這樣一個較復雜的通信與控制系統,提出采用32位的高性能嵌入式微處理器。32位ARM9微處理器處理速度快、硬件性能高、低功耗、低成本,集成了相當多的硬件資源,硬件的擴展和設計大大簡化,ARM9(S3C2410)為工業級芯片,抗干擾能力強,能夠適應運行現場的較惡劣環境,8/16位微控制器運算能力有限,對于較復雜的通信與控制算法難以順利完成;硬件平臺依賴性強,不利于軟件的開發、升級與移植;在缺乏多任務調度機制的情況下,應用軟件不僅實現難度大,且可靠性難以保證。 本文首先對多對象遠程抄表系統的總體結構進行研究,主要研究了多對象遠程抄表系統中集中器的軟件和硬件實現,對硬件資源進行了外圍擴展,對S3C2410微處理器芯片的外圍硬件進行了擴展設計,使之具備了滿足使用需求的最小系統硬件資源,包括時鐘、復位、電源、外圍存儲、LCD、RS-485通信模塊、CAN通信模塊等電路設計。實時時鐘為多對象集中器定時抄表提供時間標準;電源電路為多對象集中器系統提供穩定電源;看門狗電路的設計保證多對象集中器系統可靠運行,防止系統死機;數據存儲器主要用于存儲參數、變量、集中器自身的參數,負責智能表的參數以及智能表用量等。上行通道即多對象集中器與上位機之間的通信線路,采用CAN現場總線進行通信;下行通道即多對象集中器與智能表之間的通信,采用RS-485總線進行通信。軟件設計上,主要針對多對象集中器的數據存儲功能和串行通訊功能進行程序編寫。基于ARM的多對象遠程抄表系統集中器可以實現多對象遠程抄表,提高了數據處理能力,有效完成了上下行通信,可靠性強,穩定性高,結構簡單。

    標簽: ARM 對象 遠程抄表系統 集中器

    上傳時間: 2013-06-07

    上傳用戶:heminhao

  • DMX512-1990

    燈光舞臺系統的通信協議白皮書,DMX512在1990年發布時的原版白皮書-stage lighting system communication protocol White Paper

    標簽: 1990 DMX 512

    上傳時間: 2013-04-24

    上傳用戶:leesuper

  • 以CPLD 芯片進行十字路口的交通燈的設計

    摘要:本文主要介紹以CPLD 芯片進行十字路口的交通燈的設計,用CPLD 作為交通燈控制器的主控芯片,采用VHDL\r\n語言編寫控制程序,利用CPLD的可重復編程和在動態系統重構的特性,大大地提高了數字系統設計的靈活性和通用性。\r\n關鍵詞:CPLD;VHDL;交通燈控制器\r\n中圖分類號:TP39\r\nAbstract :This paper introduces the electronic-traffic lamp, which is based on the VHDL and is com

    標簽: CPLD 芯片 十字路口 交通燈

    上傳時間: 2013-08-11

    上傳用戶:aesuser

  • Verilog Coding Style for Efficient Digital Design

      In this paper, we discuss efficient coding and design styles using verilog. This can beimmensely helpful for any digital designer initiating designs. Here, we address different problems rangingfrom RTL-Gate Level simulation mismatch to race conditions in writing behavioral models. All theseproblems are accompanied by an example to have a better idea, and these can be taken care off if thesecoding guidelines are followed. Discussion of all the techniques is beyond the scope of this paper, however,here we try to cover a few of them.

    標簽: Efficient Verilog Digital Coding

    上傳時間: 2013-11-22

    上傳用戶:han_zh

  • State Machine Coding Styles for Synthesis

      本文論述了狀態機的verilog編碼風格,以及不同編碼風格的優缺點,Steve Golson's 1994 paper, "State Machine Design Techniques for Verilog and VHDL" [1], is agreat paper on state machine design using Verilog, VHDL and Synopsys tools. Steve's paper alsooffers in-depth background concerning the origin of specific state machine types.This paper, "State Machine Coding Styles for Synthesis," details additional insights into statemachine design including coding style approaches and a few additional tricks.

    標簽: Synthesis Machine Coding Styles

    上傳時間: 2013-10-15

    上傳用戶:dancnc

  • Verilog編碼中的非阻塞性賦值

      One of the most misunderstood constructs in the Verilog language is the nonblockingassignment. Even very experienced Verilog designers do not fully understand how nonblockingassignments are scheduled in an IEEE compliant Verilog simulator and do not understand whenand why nonblocking assignments should be used. This paper details how Verilog blocking andnonblocking assignments are scheduled, gives important coding guidelines to infer correctsynthesizable logic and details coding styles to avoid Verilog simulation race conditions

    標簽: Verilog 編碼 非阻塞性賦值

    上傳時間: 2013-10-17

    上傳用戶:tb_6877751

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