基于Actel FPGA 的双端口RAM 设计双端口RAM 芯片主要应用于高速率、高可靠性、对实时性要求高的场合,如实现DSP与PCI 总线芯片之间的数据交换接口电路等。但普通双端口RAM 最大的缺点是在两个CPU发生竞争时,有一方CPU 必须等待,因而降低了访问效率。IDT 公司推出的专用双端口RAM 芯片解决了普通双端口RAM 内部竞争问题,并融合了中断、旗语、主从功能。它具有存取速度快、功耗低、可完全异步操作、接口电路简单等优点,但缺点也非常明显,那就是价格太昂贵。为解决IDT 专用双端口RAM 芯片的价格过高问题,广州致远电子有限公司推出了一种全新的基于Actel FPGA 的双端口RAM 的解决方案。该方案采用Actel FPGA 实现,不仅具有IDT 专用双端口RAM 芯片的所有性能特点,更是在价格上得到了很大改善,以A3P060双端口RAM 为例,在相同容量(2K 字节)下,其价格仅为IDT 专用芯片的六分之一。
上传时间: 2013-10-22
上传用户:blacklee
采用Xlinx公司的Virtex5系列FPGA设计了一个用于多种高速串行协议的数据交换模块,并解决了该模块实现中的关键问题.该交换模块实现4X模式RapidIO协议与4X模式PCI Express协议之间的数据交换,以及自定义光纤协议与4X模式PCI Express协议之间的数据交换,实现了单字读写以及DMA操作,并提供高速稳定的传输带宽.
上传时间: 2013-10-12
上传用户:rnsfing
The LogiCORE™ GTP Wizard automates the task of creating HDL wrappers to configure the high-speed serial GTP transceivers in Virtex™-5 LXT and SXT devices. The menu-driven interface allows one or more GTP transceivers to be configured using pre-definedtemplates for popular industry standards, or from scratch, to support a wide variety of custom protocols.The Wizard produces a wrapper, an example design, and a testbench for rapid integration and verification of the serial interface with your custom function Features• Creates customized HDL wrappers to configureVirtex-5 RocketIO™ GTP transceivers• Users can configure Virtex-5 GTP transceivers toconform to industry standard protocols usingpredefined templates, or tailor the templates forcustom protocols• Included protocol templates provide support for thefollowing specifications: Aurora, CPRI, FibreChannel 1x, Gigabit Ethernet, HD-SDI, OBSAI,OC3, OC12, OC48, PCI Express® (PCIe®), SATA,SATA II, and XAUI• Automatically configures analog settings• Each custom wrapper includes example design, testbench; and both implementation and simulation scripts
标签: Transceiver Virtex Wizar GTP
上传时间: 2013-10-23
上传用户:leyesome
UG341 - LogiCORE™ Endpoint Block Plus v1.6 for PCI Express® 用户指南
标签: LogiCORE Endpoint Block 341
上传时间: 2013-10-11
上传用户:woshinimiaoye
UG157 - LogiCORE™ IP Initiator/Target v3.1 for PCI™ 入门指南
上传时间: 2013-11-06
上传用户:ewtrwrtwe
最新一代接口
上传时间: 2013-11-10
上传用户:daguogai
文中针对某型声纳维修训练系统的通信需求,结合声纳信号发生器的特点,提出了基于C/S模式的通信控制模块设计方案。模块采用Winsock网络编程技术实现了客户机与服务器间高速局域网通信,服务器响应客户机的请求后,输出数字控制量并利用PCI-1711的12位D/A转换功能,将数字控制量转换为模拟信号,从而实现声纳信号发生器任意波形产生。该信号发生器输出信号的幅度、频率、脉宽、持续时间等参数均可通过网络通信方式设置,并易于调节。本系统控制灵活,具有较高的实用价值。
上传时间: 2013-10-10
上传用户:hanbeidang
A Computer-On-Module, or COM, is a Module with all components necessary for a bootable host computer, packaged as a super component. A COM requires a Carrier Board to bring out I/O and to power up. COMs are used to build single board computer solutions and offer OEMs fast time-to-market with reduced development cost. Like integrated circuits, they provide OEMs with significant freedom in meeting form-fit-function requirements. For all these reasons the COM methodology has gained much popularity with OEMs in the embedded industry. COM Express® is an open industry standard for Computer-On-Modules. It is designed to be future proof and to provide a smooth transition path from legacy parallel interfaces to LVDS (Low Voltage Differential Signaling) interfaces. These include the PCI bus and parallel ATA on the one hand and PCI Express and Serial ATA on the other hand.
上传时间: 2013-11-05
上传用户:Wwill
Fastwel是一款基于AMD Geode LX800(500MHz)处理器的单板计算机,PC\104支持PCI(32位和16位ISA)。支持Linux,嵌入式Windows XP,QNX。CPB905的所有组件,包括CPU和板载内存均使用焊接从而提供高抗振性。并有一组丰富的接口:2个快速以太网端口,7个COM端口,4个USB2.0端口,支持视频输出(CRT,TFT,LVDS),分辨率高达1920×1440像素。
上传时间: 2013-11-12
上传用户:dengzb84
Linux那些事儿系列之四
上传时间: 2013-11-24
上传用户:diets