Many applications require a clock signal to be synchronous, phase-locked, or Derived fromanother signal, such as a data signal or another clock. This type of clock circuit is important in
上傳時間： 2014-12-23
上傳用戶：qq21508895
高的工作電壓高達100V N雙N溝道MOSFET同步驅動 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit, without requiring a sense resistor. A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifi er provides very fast line and load transient response. Large 1Ω gate drivers allow the D810DCDC to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. Integrated bias control generates gate drive power from the input supply during start-up and when an output shortcircuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is Derived from the output for higher effi ciency.
上傳時間： 2013-10-24
上傳用戶：wd450412225
針對傳統集成電路（ASIC）功能固定、升級困難等缺點，利用FPGA實現了擴頻通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核實現NCO模塊，在下變頻模塊調用了硬核乘法器并引入CIC濾波器進行低通濾波，給出了DQPSK解調的原理和實現方法，推導出一種簡便的引入?仔/4固定相移的實現方法。采用模塊化的設計方法使用VHDL語言編寫出源程序，在Virtex-II Pro 開發板上成功實現了整個系統。測試結果表明該系統正確實現了STEL-2000A的核心功能。 Abstract: To overcome drawbacks of ASIC such as fixed functionality and upgrade difficulty, FPGA was used to realize the core functions of STEL-2000A. This paper used the DDS IP core provided by ISE to realize the NCO module, called hard core multiplier and implemented CIC filter in the down converter, described the principle and implementation detail of the demodulation of DQPSK, and Derived a simple method to introduce a fixed phase shift of ?仔/4. The VHDL source code was designed by modularity method , and the complete system was successfully implemented on Virtex-II Pro development board. Test results indicate that this system successfully realize the core function of the STEL-2000A.
上傳時間： 2013-11-06
上傳用戶：liu123
針對傳統集成電路（ASIC）功能固定、升級困難等缺點，利用FPGA實現了擴頻通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核實現NCO模塊，在下變頻模塊調用了硬核乘法器并引入CIC濾波器進行低通濾波，給出了DQPSK解調的原理和實現方法，推導出一種簡便的引入?仔/4固定相移的實現方法。采用模塊化的設計方法使用VHDL語言編寫出源程序，在Virtex-II Pro 開發板上成功實現了整個系統。測試結果表明該系統正確實現了STEL-2000A的核心功能。 Abstract: To overcome drawbacks of ASIC such as fixed functionality and upgrade difficulty, FPGA was used to realize the core functions of STEL-2000A. This paper used the DDS IP core provided by ISE to realize the NCO module, called hard core multiplier and implemented CIC filter in the down converter, described the principle and implementation detail of the demodulation of DQPSK, and Derived a simple method to introduce a fixed phase shift of ?仔/4. The VHDL source code was designed by modularity method , and the complete system was successfully implemented on Virtex-II Pro development board. Test results indicate that this system successfully realize the core function of the STEL-2000A.
上傳時間： 2013-11-19
上傳用戶：neu_liyan
用于motorala 68K系列處理器的小實時多任務操作系統 The OMU Kernel was written to provide a cut-down Unix-like O/S for a home-made 6809-based home computer built by me, Steven Hosgood, in the early 1980s. This package contains the RTOS version of omu68k, Derived from a port of the original 6809 code to the 68000 done by Terry Barnaby and me.
標簽： Unix-like motorala cut-down provide
上傳時間： 2014-01-21
上傳用戶：1159797854
Linux driver for FujiFilm FinePix digital cameras in PC-CAM (i.e. webcam) mode driver/ Contains the driver sources. Compile with "make". Then as root, install with "make install". Type "modprobe finepix" to load the module. userspace/ Type "make" to compile. fpix: test program, independant of the driver. Uses libusb to directly access the camera and capture a frame, saved under frame.jpg. Will not work if the driver is loaded. fpixtest: test program. Uses V4L2 to capture an image. fpix-stress-v4l2: never ending (in theory) stress test Derived from fpixtest.
標簽： driver i.e. FujiFilm FinePix
上傳時間： 2014-11-28
上傳用戶：chenxichenyue
Libusb-win32 is a library that allows userspace application to access USB devices on Windows operation systems (Win98SE, WinME, Win2k, WinXP). It is Derived from and fully API compatible to libusb
標簽： application Libusb-win userspace Windows
上傳時間： 2015-09-28
上傳用戶：frank1234
CFlowchartEditor is an extension of CDiagramEditor. CDiagramEditor is a vector editor, with a CWnd-Derived window (CDiagramEditor), a data container (CDiagramEntityContainer) holding the draw-objects, undo stack and managing copy and paste, and objects Derived from CDiagramEntity representing objects drawn on screen. CDiagramEditor lacks one feature (that is difficult to implement in both simple and general fashion) - links. Manually maintaining links in a - for example - flowchart or network topography map is unwieldy. Therefore, I ve created a reference implementation for one way of adding this functionality.
標簽： CDiagramEditor CFlowchartEditor extension CWnd-d
上傳時間： 2015-11-21
上傳用戶：氣溫達上千萬的
So you wanted to add a forms editor to your application? A dialog editor? Something that allows drawing of HTML <div>s? Here is a feature rich skeleton (!) to get you started. CDiagramEditor is a package that gives you a basic visual editor intended for vector objects. Although perhaps not sufficient to create a CAD-application, you ll indeed be able to create a dialog editor. The editor itself is Derived
標簽： editor application Something wanted
上傳時間： 2013-12-13
上傳用戶：戀天使569
So you wanted to add a forms editor to your application? A dialog editor? Something that allows drawing of HTML <div>s? Here is a feature rich skeleton (!) to get you started. CDiagramEditor is a package that gives you a basic visual editor intended for vector objects. Although perhaps not sufficient to create a CAD-application, you ll indeed be able to create a dialog editor. The editor itself is Derived
標簽： editor application Something wanted
上傳時間： 2014-01-21
上傳用戶：BIBI
