To this day, Power over Ethernet (PoE) continues to gainpopularity in today’s networking world. The 12.95Wdelivered to the Powered Device (PD) input supplied bythe Power Sourcing Equipment (PSE) is a universal supply.Each PD provides its own DC/DC conversion from anominal 48V supply, thus eliminating the need for a correctvoltage wall Adapter. However, higher power devicescan not take advantage of standard PoE because of itspower limitations, and must rely on a large wall Adapteras their primary supply. The new LTC4268-1 breaks thispower barrier by allowing for power of up to 35W for suchpower-hungry 2-pair PoE applications. The LTC4268-1provides a complete solution by integrating a high powerPD interface control with an isolated fl yback controller.
上傳時間： 2014-12-24
上傳用戶：jasson5678
介紹了基于單片機C8051F020的通用串口適配器的設計與實現方法，即由單片機控制的智能化一對多口收發信號轉換器。通過采用C51對單片機進行編程，控制與RS-232（標準RS-232電平）、RS232(TTL電平)、RS-422接口的數據通信；采用C++ Builder作為開發平臺，通過RS-232接口實現上位機對適配器各個通信端口的控制。 Abstract: Design and realization of a universal serial port Adapter based on the MCU C8051F020 are introduced.The Adapter is an intelligent one-to-more receiving and transmitting signal converter controlled by the MCU. By programming the MCU with the language C51,MCU control data communication between the MCU and RS-232(RS-232 level),RS-232(TTL level),RS-422 port; Using C++ Builder as the development plane, by one RS232 port, the upper PC can control each of the communication port of the Adapter.
上傳時間： 2013-11-19
上傳用戶：hebanlian
keil c51 v9.01此版不是漢化中文版，是英文版來的。ARM發布Keil μVision4集成開發環境(IDE)，用來在微控制器和智能卡設備上創建、仿真和調試嵌入式應用。 μVision4 IDE是為增強開發人員的工作效率設計的，有了它可以更快速、更高效地開發和檢驗程序。通過μVision4 IDE中引入的靈活的窗口管理系統，開發人員可以使用多臺監視器，在可視界面任何地方全面控制窗口放置。 新用戶界面可以更好地利用屏幕空間，更有效地組織多個窗口，為開發應用提供整齊高效的環境。 μVision4在μVision3的成功經驗的基礎上增加了：* System Viewer (系統查看程序)窗口，提供了設備外圍寄存器信息，這些信息可以在System Viewer窗口內部直接更改。* Debug Restore Views (調試恢復視圖)允許保存多個窗口布局，為程序分析迅速選擇最適合的調試視圖。* Multi-Project Workspace(多項目工作空間)為處理多個并存的項目提供了簡化的方法，如引導加載程序和應用程序。* 為基于ARM Cortex 處理器的MCU提供了Data and instruction trace(數據和指令追蹤)功能。* 擴展了Device Simulation(設備仿真)功能以支持許多新設備，如Luminary、NXP和東芝生產的基于ARM Cortex-M3處理器的MCU；Atmel SAM7/9；及新的8051衍生品，如Infineon XC88x和SiLABS 8051Fxx。* 支持許多debug Adapter interfaces(調試適配器接口)，包括ADI miDAS Link、Atmel SAM-ICE、Infineon DAS和ST-Link。
上傳時間： 2013-10-31
上傳用戶：qingdou
基于單DSP的VoIP模擬電話適配器研究與實現:提出和實現了一種新穎的基于單個通用數字信號處理器(DSP)的VoIP模擬電話適配器方案。DSP的I/O和存儲資源非常有限，通常適于運算密集型應用，不適宜控制密集型應用[5]。該系統高效利用單DSP的I/O和片內外存儲器資源，采用μC/OS-II嵌入式實時操作系統，支持SIP和TCP-UDP/IP協議，通過LAN或者寬帶接入，使普通電話機成為Internet終端，實現IP電話。該系統軟硬件結構緊湊高效，運行穩定，成本低，具有廣闊的應用前景。關鍵詞：模擬電話適配器；IP電話；數字信號處理器；μC/OS-II 【Abstract】This paper presents a VoIP ATA solution based on a single digital signal processor (DSP). DSPs are suitable for arithmetic-intensiveapplication and unsuitable for control-intensive application because of the limitation of I/O and memory resources. This solution is based on a 16-bitfixed-point DSP and μC/OS-II embedded real-time operating system. It makes good use of the limited resources, supports SIP and TCP-UDP/IPprotocol. It can connect the analog telephone to Internet and realize the VoIP application. This system has a great future for its high efficiency andlow cost.【Key words】Analog telephone Adapter (ATA); Voice over Internet protocol (VoIP); Digital signal processor (DSP); μC/OS-II Research and Implementation of VoIPATA Based on Single DSP
上傳時間： 2013-11-20
上傳用戶：Wwill
MAXQUSBJTAGOW評估板軟件:關鍵特性 Easily Load and Debug Code Interface Provides In-Application Debugging Features Step-by-Step Execution Tracing Breakpointing by Code Address, Data Memory Address, or Register Access Data Memory View and Edit Supports Logic Levels from 1.1V to 3.6V Supports JTAG and 1-Wire Protocols Each Adapter Has Its Own Unique Serial ID, Allowing Multiple Adapters to be Connected Without COM Port Conflicts Has In-Field Upgradable Capability if Firmware Needs to be Upgraded Enclosure Protects from Shorts and ESD
標簽： MAXQUSBJTAGOW 評估板 軟件
上傳時間： 2013-10-24
上傳用戶：teddysha
superpro 3000u 驅動 PIC16C65B@QFP44 [SA245] PIC16C65B: Part number QFP44: Package in QFP44 SA245: Adapter purchase number AM29DL320GT@FBGA48 [SA642+B026] AM29DL320GT: Part number FBGA48: Package in FBGA48 SA642: Adapter purchase number (Top board with socket) B026: Adapter purchase number (Bottom board, exchangable for different parts) 87C196CA@PLCC68(universal Adapter) [PEP+S414T] 87C196CA: Part number PLCC68: Package in PLCC68 universal Adapter: this Adapter is valid for all parts in this package PEP: The PEP (Pin-driver Expansion Pack necessary to work with the Adapter S414T) S414T: Adapter purchase number (Universal for all parts in this package) S71PL127J80B@FBGA64(special Adapter) [(SA642A-B079A-Y096AF001)] S71PL127J80B: Part number FBGA64: Package in FBGA64 special Adapter: this Adapter is valid for this
上傳時間： 2013-10-23
上傳用戶：Avoid98
MAXQUSBJTAGOW評估板軟件:關鍵特性 Easily Load and Debug Code Interface Provides In-Application Debugging Features Step-by-Step Execution Tracing Breakpointing by Code Address, Data Memory Address, or Register Access Data Memory View and Edit Supports Logic Levels from 1.1V to 3.6V Supports JTAG and 1-Wire Protocols Each Adapter Has Its Own Unique Serial ID, Allowing Multiple Adapters to be Connected Without COM Port Conflicts Has In-Field Upgradable Capability if Firmware Needs to be Upgraded Enclosure Protects from Shorts and ESD
標簽： MAXQUSBJTAGOW 評估板 軟件
上傳時間： 2013-11-23
上傳用戶：truth12
superpro 3000u 驅動 PIC16C65B@QFP44 [SA245] PIC16C65B: Part number QFP44: Package in QFP44 SA245: Adapter purchase number AM29DL320GT@FBGA48 [SA642+B026] AM29DL320GT: Part number FBGA48: Package in FBGA48 SA642: Adapter purchase number (Top board with socket) B026: Adapter purchase number (Bottom board, exchangable for different parts) 87C196CA@PLCC68(universal Adapter) [PEP+S414T] 87C196CA: Part number PLCC68: Package in PLCC68 universal Adapter: this Adapter is valid for all parts in this package PEP: The PEP (Pin-driver Expansion Pack necessary to work with the Adapter S414T) S414T: Adapter purchase number (Universal for all parts in this package) S71PL127J80B@FBGA64(special Adapter) [(SA642A-B079A-Y096AF001)] S71PL127J80B: Part number FBGA64: Package in FBGA64 special Adapter: this Adapter is valid for this
上傳時間： 2014-03-27
上傳用戶：ippler8
設計模式，Adapter,bridge,chain
標簽： 設計模式
上傳時間： 2014-01-19
上傳用戶：qunquan
該文件是多層體系結構的數據訪問層，它使用工廠模式、Adapter模式，封裝了NHibernate，提供基本CRUD接口。想利用NHibernate實現ORM的兄弟們，沖啊！
上傳時間： 2015-05-19
上傳用戶：wangdean1101
