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教程资料  XAPP694-从配置PROM读取用户数据

This application note describes how to retrieve user-defined data from Xilinx configurationPROMs (XC18V00 and Platform Flash devices) after the same PROM has configured theFPGA. The method to add user-defined data to the configuration PROM file is also discussed.The reference design described in t ...

https://www.eeworm.com/dl/fpga/doc/32574.html

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教程资料  XAPP228 -Virtex器件内的四端口存储器

This application note describes how the existing dual-port block memories in the Spartan&trade;-IIand Virtex&trade; families can be used as Quad-Port memories. This essentially involves a dataaccess time (halved) versus functionality (doubled) trade-off. The overall bandwidth of the blockmemory in ...

https://www.eeworm.com/dl/fpga/doc/32585.html

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教程资料  XAPP098 - Spartan FPGA低成本、高效率串行配置

This application note shows how to achieve low-cost, efficient serial configuration for Spartan FPGA designs. The approachrecommended here takes advantage of unused resources in a design, thereby reducing the cost, part count, memory size,and board space associated with the serial configuration ci ...

https://www.eeworm.com/dl/fpga/doc/32590.html

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教程资料  XAPP1065 - 利用Spartan-6 FPGA设计扩频时钟发生器

&nbsp; Consumer display applications commonly use high-speed LVDS interfaces to transfer videodata. Spread-spectrum clocking can be used to address electromagnetic compatibility (EMC)issues within these consumer devices. This application note uses Spartan&reg;-6 FPGAs togenerate spread-spectrum ...

https://www.eeworm.com/dl/fpga/doc/32595.html

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教程资料  XAPP806 -决定DDR反馈时钟的最佳DCM相移

This application note describes how to build a system that can be used for determining theoptimal phase shift for a Double Data Rate (DDR) memory feedback clock. In this system, theDDR memory is controlled by a controller that attaches to either the OPB or PLB and is used inan embedded microproces ...

https://www.eeworm.com/dl/fpga/doc/32600.html

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教程资料  FPGA设计重利用方法(Design Reuse Methodology)

&nbsp; FPGAs have changed dramatically since Xilinx first introduced them just 15 years ago. In thepast, FPGA were primarily used for prototyping and lower volume applications; custom ASICswere used for high volume, cost sensitive designs. FPGAs had also been too expensive and tooslow for many a ...

https://www.eeworm.com/dl/fpga/doc/32621.html

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教程资料  扩频通信芯片STEL-2000A的FPGA实现

针对传统集成电路（ASIC）功能固定、升级困难等缺点，利用FPGA实现了扩频通信芯片STEL-2000A的核心功能。使用ISE提供的DDS IP核实现NCO模块，在下变频模块调用了硬核乘法器并引入CIC滤波器进行低通滤波，给出了DQPSK解调的原理和实现方法，推导出一种简便的引入?仔/4固定相移的实现方法。采用模块化的设计方法使用VHDL语言 ...

https://www.eeworm.com/dl/fpga/doc/32653.html

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通信网络  ISM射频接收器的基带计算

Abstract: Many industrial/scientific/medical (ISM) band radio frequency (RF) receivers use an external Sallen-Key datafilter and a data slicer to generate the baseband digital output. This tutorial describes the ISM-RF Baseband Calculator,which can be used to calculate the filter capacitor values ...

https://www.eeworm.com/dl/564/33532.html

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通信网络  红外遥控协议_英文版

There is no doubt that remote controls are extremely popular and it has become very hard to imagine a world without them. They are used to control all manner of house appliances like the TV set, the stereo, the VCR, and the satellite receiver.

https://www.eeworm.com/dl/564/33692.html

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通信网络  XAPP1042-利用GPIO实现以太网PHY寄存器访问

The XPS Ethernetlite peripheral does not provide any mechanism to access the Ethernet PHYregisters. These registers are used to configure auto negotiation parameters and to obtain PHYstatus. This application note provides reference systems and associated software to accessPHY registers by connecti ...

https://www.eeworm.com/dl/564/33748.html

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