PCI-PCI 橋啟動(dòng)時(shí),一般需要從EEPROM 預(yù)讀取配置數(shù)據(jù)。更改EEPROM中的數(shù)據(jù)一般需要專(zhuān)用的燒結(jié)器,這給調(diào)試過(guò)程帶來(lái)不便。尤其是采用表貼封裝的EEPROM。本文以Intel 公司的Dec21554PCI-PCI 橋?yàn)槔榻B一種在線(xiàn)讀寫(xiě)EEPROM 的方法。EEPROM選用的是ATMEL 公司生產(chǎn)的AT93LC66,4Kbit,按512×8bit 組織。
標(biāo)簽: PCI-PCI EEPROM 在線(xiàn)讀寫(xiě)
上傳時(shí)間: 2013-11-08
上傳用戶(hù):trepb001
This document provides practical, common guidelines for incorporating PCI Express interconnect layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10- layer or more server baseboard designs. Guidelines and constraints in this document are intended for use on both baseboard and add-in card PCB designs. This includes interconnects between PCI Express devices located on the same baseboard (chip-to-chip routing) and interconnects between a PCI Express device located “down” on the baseboard and a device located “up” on an add-in card attached through a connector. This document is intended to cover all major components of the physical interconnect including design guidelines for the PCB traces, vias and AC coupling capacitors, as well as add-in card edge-finger and connector considerations. The intent of the guidelines and examples is to help ensure that good high-speed signal design practices are used and that the timing/jitter and loss/attenuation budgets can also be met from end-to-end across the PCI Express interconnect. However, while general physical guidelines and suggestions are given, they may not necessarily guarantee adequate performance of the interconnect for all layouts and implementations. Therefore, designers should consider modeling and simulation of the interconnect in order to ensure compliance to all applicable specifications. The document is composed of two main sections. The first section provides an overview of general topology and interconnect guidelines. The second section concentrates on physical layout constraints where bulleted items at the beginning of a topic highlight important constraints, while the narrative that follows offers additional insight.
標(biāo)簽: pci PCB 設(shè)計(jì)規(guī)范
上傳時(shí)間: 2014-01-24
上傳用戶(hù):s363994250
PCI-E是一種高速傳輸總線(xiàn)形式。
標(biāo)簽: PCI-E 8622 數(shù)據(jù)采集卡
上傳時(shí)間: 2013-12-18
上傳用戶(hù):宋桃子
PCI-1734快速安裝使用手冊(cè)PCI-1734快速安裝使用手冊(cè)PCI-1734快速安裝使用手冊(cè)PCI-1734快速安裝使用手冊(cè)PCI-1734快速安裝使用手冊(cè)PCI-1734快速安裝使用手冊(cè)PCI-1734快速安裝使用手冊(cè)
上傳時(shí)間: 2013-10-22
上傳用戶(hù):ssz1990
本文介紹一種基于PCI Express 總線(xiàn)的高速數(shù)據(jù)采集卡的設(shè)計(jì)方案及功能實(shí)現(xiàn)。給出系統(tǒng)的基本結(jié)構(gòu)及單元組成,重點(diǎn)闡述系統(tǒng)硬件設(shè)計(jì)的關(guān)鍵技術(shù)和本地總線(xiàn)的控制邏輯,詳細(xì)探討了基于DriverWorks 的設(shè)備驅(qū)動(dòng)程序的開(kāi)發(fā)以及上層應(yīng)用軟件的設(shè)計(jì)。該系統(tǒng)通過(guò)實(shí)踐驗(yàn)證,可用于衛(wèi)星下行高速數(shù)據(jù)的接收并可適用于其他高速數(shù)據(jù)采集與處理系統(tǒng)。關(guān)鍵詞:PCI Express 總線(xiàn) PCIE PEX8311 DMA 板卡驅(qū)動(dòng) 隨著空間科學(xué)和空間電子學(xué)技術(shù)的飛速發(fā)展,空間科學(xué)實(shí)驗(yàn)的種類(lèi)和數(shù)量以及科學(xué)實(shí)驗(yàn)所產(chǎn)生的數(shù)據(jù)量不斷增加。為了使地面接收處理系統(tǒng)能夠?qū)崟r(shí)處理和顯示科學(xué)圖像數(shù)據(jù),必須要設(shè)計(jì)出新的地面數(shù)據(jù)接收處理系統(tǒng),實(shí)現(xiàn)大量高速數(shù)據(jù)的正確接收采集、處理以及存儲(chǔ)。為了滿(mǎn)足地面系統(tǒng)的要求,并為以后的計(jì)算機(jī)系統(tǒng)升級(jí)提供更廣闊的空間,本系統(tǒng)擬采用第三代I/O 互連技術(shù)PCI Express(簡(jiǎn)稱(chēng)PCI-E)作為本數(shù)據(jù)采集卡的進(jìn)機(jī)總線(xiàn)形式。本文通過(guò)對(duì)PCI-E 總線(xiàn)專(zhuān)用接口芯片PLX 公司的PEX8311 性能分析,特別是對(duì)突發(fā)讀、寫(xiě)和DMA讀操作的時(shí)序研究,設(shè)計(jì)出本地總線(xiàn)的可編程控制邏輯,并詳細(xì)討論了整個(gè)PCI-E 高速數(shù)據(jù)采集卡的硬件設(shè)計(jì)方案,以及WDM 驅(qū)動(dòng)程序和上層應(yīng)用程序的設(shè)計(jì)方法。
標(biāo)簽: Express PCI 總線(xiàn) 卡的設(shè)計(jì)
上傳時(shí)間: 2013-10-28
上傳用戶(hù):tianyi996
瀏覽所有的PCI設(shè)備
上傳時(shí)間: 2015-01-03
上傳用戶(hù):zsjinju
支持X/YModem和cis_b+協(xié)議的串口通訊程序
標(biāo)簽: YModem cis_b 協(xié)議 串口通訊
上傳時(shí)間: 2014-01-17
上傳用戶(hù):qweqweqwe
支持X/Y/Z Modem協(xié)議的傳輸文件的通訊程序
標(biāo)簽: Modem 協(xié)議 傳輸 通訊程序
上傳時(shí)間: 2015-01-03
上傳用戶(hù):xg262122
X Windows下的迷宮程序
上傳時(shí)間: 2015-01-04
上傳用戶(hù):372825274
支持Windows 3.x、Windows 9x平臺(tái)上的中文(GB、Big5)、日文(Shift JIS、EUC JIS)、韓文(KS C 5601)、HZ碼的顯示與輸入,智能內(nèi)碼識(shí)別,支持屏幕取詞翻譯的16位程序(VC1.5編譯)。作者:朱佳良
標(biāo)簽: Windows JIS Shift Big5
上傳時(shí)間: 2013-12-28
上傳用戶(hù):003030
蟲(chóng)蟲(chóng)下載站版權(quán)所有 京ICP備2021023401號(hào)-1