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  • 3.3v看門狗芯片

    The STWD100 watchdog timer circuits are self-contained devices which prevent systemfailures that are caused by certain types of hardware errors (non-responding peripherals,bus contention, etc.) or software errors (bad code jump, code stuck in loop, etc.).The STWD100 watchdog timer has an input, WDI, and an output, WDO (see Figure 2). Theinput is used to clear the internal watchdog timer periodically within the specified timeoutperiod, twd (see section 3: Watchdog timing). While the system is operating correctly, itperiodically toggles the watchdog input, WDI. If the system fails, the watchdog timer is notreset, a system alert is generated and the watchdog output, WDO, is asserted (seesection 3: Watchdog timing).The STWD100 circuit also has an enable pin, EN (see Figure 2), which can enable ordisable the watchdog functionality. The EN pin is connected to the internal pull-downresistor. The device is enabled if the EN pin is left floating.

    標簽: 3.3 看門狗 芯片

    上傳時間: 2013-10-22

    上傳用戶:taiyang250072

  • Dsp281x外設資料

    This overview guide describes all the peripherals available for TMS320x28xx and TMS320x28xxx devices.section 2 shows the peripherals used by each device. section 3 provides descriptions of the peripherals.You can download the peripheral guide by clicking on the literature number, which is linked to the portable document format (pdf) file.

    標簽: 281x Dsp 281 外設

    上傳時間: 2013-11-21

    上傳用戶:HGH77P99

  • CodeWarrior開發套件簡明指南

    The CodeWarrior Development Suite provides access and technical support to amultitude of CodeWarrior products. In this quick start guide, section 1 explains howto register your CodeWarrior Development Suite. section 2 explains how to activateand install one of your products. section 3 describes what you are entitled to withthe purchase of your CodeWarrior Development Suite, and section 4 discusses theavailable purchase options. section 5 describes the benefits of maintaining a currenttechnical support contract, and section 6 tells you how to access support.

    標簽: CodeWarrior 開發套件

    上傳時間: 2014-03-02

    上傳用戶:784533221

  • MAX16948雙遙控天線LDO開關

      Abstract: This application note helps system designers choose the correct external components for use with the MAX16948 dualremote antenna LDO/switch, thus ensuring that automobile-regulated phantom antenna supply and output-current-monitoring circuitrymeet performance objectives. An electronic calculator is provided that helps specify the critical external components for theMAX16948, thus reducing design time. The calculator also determines the device's analog output voltage, output current-limitthreshold, and output current-sensing accuracies. The calculator includes new automatic Step By Step feature that assists designerswith component choice. To use the new automatic feature, click on the Step By Step button relative to the desired section.

    標簽: 16948 MAX LDO 遙控天線

    上傳時間: 2013-11-04

    上傳用戶:lhll918

  • XAPP944 - 將Xilinx CoolRunner-II CPLD用作數據流開關

      This application note shows how a Xilinx CoolRunnerTM-II CPLD can be used as a simplelogical switch that can quickly and reliably select between different MPEG video sources. Thesource code for the design is available on the Xilinx website, and is linked from the “VHDLCode” section. The code can be expanded by the user to perform additional operations usingthe remaining CPLD resources

    標簽: CoolRunner-II Xilinx XAPP CPLD

    上傳時間: 2013-12-16

    上傳用戶:qwer0574

  • pci e PCB設計規范

    This document provides practical, common guidelines for incorporating PCI Express interconnect layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10- layer or more server baseboard designs. Guidelines and constraints in this document are intended for use on both baseboard and add-in card PCB designs. This includes interconnects between PCI Express devices located on the same baseboard (chip-to-chip routing) and interconnects between a PCI Express device located “down” on the baseboard and a device located “up” on an add-in card attached through a connector. This document is intended to cover all major components of the physical interconnect including design guidelines for the PCB traces, vias and AC coupling capacitors, as well as add-in card edge-finger and connector considerations. The intent of the guidelines and examples is to help ensure that good high-speed signal design practices are used and that the timing/jitter and loss/attenuation budgets can also be met from end-to-end across the PCI Express interconnect. However, while general physical guidelines and suggestions are given, they may not necessarily guarantee adequate performance of the interconnect for all layouts and implementations. Therefore, designers should consider modeling and simulation of the interconnect in order to ensure compliance to all applicable specifications. The document is composed of two main sections. The first section provides an overview of general topology and interconnect guidelines. The second section concentrates on physical layout constraints where bulleted items at the beginning of a topic highlight important constraints, while the narrative that follows offers additional insight.  

    標簽: pci PCB 設計規范

    上傳時間: 2014-01-24

    上傳用戶:s363994250

  • PE可執行文件的鑲入式程序的編寫方法及示例(鑲入式后門程序&原程序) 由于Microsoft公司的Windows系統是當前大部分個人電腦所使用的操作系統 主要包括win95,98,me,nt4,200

    PE可執行文件的鑲入式程序的編寫方法及示例(鑲入式后門程序&原程序) 由于Microsoft公司的Windows系統是當前大部分個人電腦所使用的操作系統 主要包括win95,98,me,nt4,2000,xp等,而這些系統所使用的可執行文件的格式基 本上是PE結構的。這里的可執行文件的鑲入式程序就是針對PE結構的可執行文件。 這里先簡單說一下PE文件框架結構: DOS MZ header DOS stub//在不支持 PE文件格式的操作系統中它將簡單顯示一個錯誤提示 PE header//含了許多PE裝載器用到的重要信息 section table//每個section的信息 section 1 section 2 section 3.... 由于sectionAlignment 塊對齊的原因每個section之間都會產生很多空間, 鑲入式程序的代碼可以放在section之間的空位上,比較方便的方法是把代碼放在 最后一個section的末尾,然后更改Misc.VirtualSize和SizeOfRawData這兩個位 于section table的IMAGE_section_HEADER結構數組的成員。如果代碼十分的長, 有時候會造成鑲入的代碼無法被完全加載而產生錯誤,這時需要更改SizeOfImage 在IMAGE_NT_HEADERS 結構中。 在不同的WINDOWS版本中api調用地址也有不同,為了解決這個問題可以更改引 入表讓加載器

    標簽: Microsoft Windows 程序 200

    上傳時間: 2015-01-13

    上傳用戶:luopoguixiong

  • Copyright© 2004 Sergiu Dumitriu, Marta Gî rdea, Că tă lin Hriţ cu Permission is

    Copyright© 2004 Sergiu Dumitriu, Marta Gî rdea, Că tă lin Hriţ cu Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation with no Invariant sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License" All brand names, product names, or trademarks belong to their respective holders.

    標簽: Permission Copyright 259 Dumitriu

    上傳時間: 2015-04-02

    上傳用戶:jackgao

  • jboss 開發人員 手冊 JBoss: A Developer s Notebook also introduces the management console, the web service

    jboss 開發人員 手冊 JBoss: A Developer s Notebook also introduces the management console, the web services messaging features, enhanced monitoring capabilities, and shows you how to improve performance. At the end of each lab, you ll find a section called "What about..." that anticipates and answers likely follow-up questions, along with a section that points you to articles and other resources if you need more information.

    標簽: introduces management Developer the

    上傳時間: 2015-04-17

    上傳用戶:dreamboy36

  • VHDL 關于2DFFT設計程序 u scinode1 ∼ scinode9.vhd: Every SCI node RTL vhdl code. The details can be

    VHDL 關于2DFFT設計程序 u scinode1 ∼ scinode9.vhd: Every SCI node RTL vhdl code. The details can be seen in the following section. u 2dfft.vhd: The top module includes these scinodes and form a 3x3 SCI Torus network, and it support these sub-modules scinode1∼ scinode9 reset and clk and global_cnt signals to synchronous the sub-modules to simplify the overall design. u proj2.wfc: VSS simulation result that is the same as the ModelSim simulation result. u Pro2_2.wfc: VSS simulation result of another test pattern can’t cause overflow situation.

    標簽: scinode1 scinode details 2DFFT

    上傳時間: 2014-12-02

    上傳用戶:15071087253

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