Xilinx 高性能 CPLD、FPGA 和配置 PROM 系列具備在系統(tǒng)可編程性、可靠的引腳鎖定以及JTAG 邊界掃描測(cè)試功能。此強(qiáng)大的功能組合允許設(shè)計(jì)人員在進(jìn)行重大更改時(shí),仍能保留原始的器件引腳,從而避免重組 PC 板。通過(guò)利用嵌入式控制器從板載 RAM 或 EPROM 對(duì)這些CPLD 和 FPGA 編程,設(shè)計(jì)人員可輕松升級(jí)、修改和測(cè)試設(shè)計(jì),即使在現(xiàn)場(chǎng)也是如此。
上傳時(shí)間: 2014-08-10
上傳用戶(hù):sc965382896
目前,大型設(shè)計(jì)一般推薦使用同步時(shí)序電路。同步時(shí)序電路基于時(shí)鐘觸發(fā)沿設(shè)計(jì),對(duì)時(shí)鐘的周期、占空比、延時(shí)和抖動(dòng)提出了更高的要求。為了滿(mǎn)足同步時(shí)序設(shè)計(jì)的要求,一般在FPGA設(shè)計(jì)中采用全局時(shí)鐘資源驅(qū)動(dòng)設(shè)計(jì)的主時(shí)鐘,以達(dá)到最低的時(shí)鐘抖動(dòng)和延遲。 FPGA全局時(shí)鐘資源一般使用全銅層工藝實(shí)現(xiàn),并設(shè)計(jì)了專(zhuān)用時(shí)鐘緩沖與驅(qū)動(dòng)結(jié)構(gòu),從而使全局時(shí)鐘到達(dá)芯片內(nèi)部的所有可配置單元(CLB)、I/O單元 (IOB)和選擇性塊RAM(Block Select RAM)的時(shí)延和抖動(dòng)都為最小。為了適應(yīng)復(fù)雜設(shè)計(jì)的需要,Xilinx的FPGA中集成的專(zhuān)用時(shí)鐘資源與數(shù)字延遲鎖相環(huán)(DLL)的數(shù)目不斷增加,最新的 Virtex II器件最多可以提供16個(gè)全局時(shí)鐘輸入端口和8個(gè)數(shù)字時(shí)鐘管理模塊(DCM)。與全局時(shí)鐘資源相關(guān)的原語(yǔ)常用的與全局時(shí)鐘資源相關(guān)的Xilinx器件原語(yǔ)包括:IBUFG、IBUFGDS、BUFG、BUFGP、BUFGCE、 BUFGMUX、BUFGDLL和DCM等,如圖1所示。
標(biāo)簽: Xilinx FPGA 全局時(shí)鐘資源
上傳時(shí)間: 2014-01-01
上傳用戶(hù):maqianfeng
摘要:本應(yīng)用指南提供了一種方法可從3.3V接口對(duì)Spartan™-3和Spartan-3L FPGA進(jìn)行配置。它針對(duì)每種配置模式都提供了一組經(jīng)驗(yàn)證的連接框圖。這些框圖是完整且可直接使用的解決方案。
標(biāo)簽: Spartan FPGA 3.3 應(yīng)用指南
上傳時(shí)間: 2013-11-17
上傳用戶(hù):AISINI005
ZBT SRAM控制器參考設(shè)計(jì),xilinx提供VHDL代碼 Description: Contains the following files readme.txt appnote_zbtp.vhd appnote_zbtf.vhd appnote_zbt.ucf Platform: All Installation/Use: Use 'unzip' on the .zip file and 'gunzip' followed by 'tar -xvf' on the .tar.gz file.
標(biāo)簽: xilinx SRAM VHDL ZBT
上傳時(shí)間: 2013-11-24
上傳用戶(hù):31633073
USB接口控制器參考設(shè)計(jì),xilinx提供VHDL代碼 usb xilinx vhdl ; This program is free software; you can redistribute it and/or modify ; it under the terms of the GNU General Public License as published by ; the Free Software Foundation; either version 2 of the License, or ; (at your option) any later version. ; ; This program is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; GNU General Public License for more details. ; ; You should have received a copy of the GNU General Public License ; along with this program; if not, write to the Free Software ; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
上傳時(shí)間: 2013-10-12
上傳用戶(hù):windgate
UART 4 UART參考設(shè)計(jì),Xilinx提供VHDL代碼 uart_vhdl This zip file contains the following folders: \vhdl_source -- Source VHDL files: uart.vhd - top level file txmit.vhd - transmit portion of uart rcvr.vhd - - receive portion of uart \vhdl_testfixture -- VHDL Testbench files. This files only include the testbench behavior, they do not instantiate the DUT. This can easily be done in a top-level VHDL file or a schematic. This folder contains the following files: txmit_tb.vhd -- Test bench for txmit.vhd. rcvr_tf.vhd -- Test bench for rcvr.vhd.
標(biāo)簽: UART Xilinx VHDL 參考設(shè)計(jì)
上傳時(shí)間: 2013-11-07
上傳用戶(hù):jasson5678
用Xilinx CPLD作為電機(jī)控制器
標(biāo)簽: Xilinx CPLD 電機(jī)控制器
上傳時(shí)間: 2013-10-27
上傳用戶(hù):lanhuaying
Abstract: Field-programmable gate arrays (FPGAs) are used in a wide variety of applications and end markets, including digital signalprocessing, medical imaging, and high-performance computing. This application note outlines the issues related to powering FPGAs.It also discusses Maxim's solutions for powering Xilinx® FPGAs.
上傳時(shí)間: 2013-12-16
上傳用戶(hù):haohaoxuexi
6.1 XILINX FPGA的配置設(shè)計(jì)
上傳時(shí)間: 2013-11-14
上傳用戶(hù):sqq
2.1.2 SPARTANⅡ和SPARTANⅡE系列產(chǎn)品
上傳時(shí)間: 2013-11-16
上傳用戶(hù):star_in_rain
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