PCI總線是Pentium主機最常見的總線,基于PCI總線形成的CompactPCI和PXI總線廣泛地應用在儀器和自動化領域。PCI適配卡的接口設計變得越來越重要。本文對PCI專用接口電路PCI9052的功能進行了研究與分析,并給出了一個應用實例設計。
上傳時間: 2013-11-02
上傳用戶:unmwq
一、版權信息PCI-51XX系列智能CAN接口卡及相關軟件均屬廣州市周立功單片機發(fā)展有限公司所有,其產(chǎn)權受國家法律絕對保護,未經(jīng)本公司授權,其他公司、單位、代理商及個人不得非法使用和拷貝,否則將受到國家法律的嚴厲制裁。您若需要我公司產(chǎn)品及相關信息,請及時與我們聯(lián)系,我們將熱情接待。廣州周立功單片機發(fā)展有限公司保留在任何時候修訂本用戶手冊且不需通知的權利。 二、功能特點PCI-51XX智能CAN接口卡是具有PCI接口的高性能CAN總線通訊適配卡,它使PC機方便地連接到CAN總線上,實現(xiàn)CAN2.0B協(xié)議的數(shù)據(jù)通訊。PCI-51XX智能CAN接口卡采用標準PCI接口,實現(xiàn)與主機PC的高速數(shù)據(jù)交換。接口卡上自帶光電隔離模塊,使PC機避免由于地環(huán)流的損壞,增強系統(tǒng)在惡劣環(huán)境中使用的可靠性。PCI-51XX智能CAN接口卡配有可在Win98/Me、Win2000/XP下工作的驅動程序,使用通用CAN接口庫,使開發(fā)簡單化,并包含在VC++、C++Builder、Delphi、VB下開發(fā)的詳細應用例程。
上傳時間: 2013-10-08
上傳用戶:wangyi39
The PCA9541 is a 2-to-1 I2C-bus master selector designed for high reliability dual masterI2C-bus applications where system operation is required, even when one master fails orthe controller card is removed for maintenance. The two masters (for example, primaryand back-up) are located on separate I2C-buses that connect to the same downstreamI2C-bus slave devices. I2C-bus commands are sent by either I2C-bus master and are usedto select one master at a time. Either master at any time can gain control of the slavedevices if the other master is disabled or removed from the system. The failed master isisolated from the system and will not affect communication between the on-line masterand the slave devices on the downstream I2C-bus.
上傳時間: 2013-10-09
上傳用戶:3294322651
關鍵詞 PCI的總線協(xié)議,數(shù)據(jù)傳輸摘 要本文檔介紹通過 Actel Flash 的FPGA 來實現(xiàn)PCI 的橋接芯片的功能
上傳時間: 2013-10-08
上傳用戶:kongrong
詳細闡述一種利用CPLD 實現(xiàn)的8 位單片機與PCI 設備間的通信接口方案,給出用ABEL HDL編寫的主要源程序。該方案在實踐中檢驗通過。
上傳時間: 2013-10-30
上傳用戶:yeling1919
In this document, the term Ô60xÕ is used to denote a 32-bit microprocessor from the PowerPC architecture family that conforms to the bus interface of the PowerPC 601ª, PowerPC 603ª, or PowerPC 604 microprocessors. Note that this does not include the PowerPC 602ª microprocessor which has a multiplexed address/data bus. 60x processors implement the PowerPC architecture as it is speciÞed for 32-bit addressing, which provides 32-bit effective (logical) addresses, integer data types of 8, 16, and 32 bits,and ßoating-point data types of 32 and 64 bits (single-precision and double-precision).1.1 Overview The MPC106 provides an integrated high-bandwidth, high-performance, TTL-compatible interface between a 60x processor, a secondary (L2) cache or additional (up to four total) 60x processors, the PCI bus,and main memory. This section provides a block diagram showing the major functional units of the 106 and describes brießy how those units interact.Figure 1 shows the major functional units within the 106. Note that this is a conceptual block diagram intended to show the basic features rather than an attempt to show how these features are physically implemented on the device.
上傳時間: 2013-10-08
上傳用戶:18711024007
The Motorola MPC106 PCI bridge/memory controller provides a PowerPCªmicroprocessor common hardware reference platform (CHRPª) compliant bridgebetween the PowerPC microprocessor family and the Peripheral Component Interconnect(PCI) bus. In this document, the term Ô106Õ is used as an abbreviation for the phraseÔMPC106 PCI bridge/memory controllerÕ. This document contains pertinent physicalcharacteristics of the 106. For functional characteristics refer to theMPC106 PCI Bridge/Memory Controller UserÕs Manual.This document contains the following topics:Topic PageSection 1.1, ÒOverviewÓ 2Section 1.2, ÒFeaturesÓ 3Section 1.3, ÒGeneral ParametersÓ 5Section 1.4, ÒElectrical and Thermal CharacteristicsÓ 5Section 1.5, ÒPin AssignmentsÓ 17Section 1.6, ÒPinout Listings 18Section 1.7, ÒPackage DescriptionÓ 22Section 1.8, ÒSystem Design InformationÓ 24Section 1.9, ÒDocument Revision HistoryÓ 29Section 1.10, ÒOrdering InformationÓ 29
上傳時間: 2013-11-04
上傳用戶:as275944189
通用的多電源總線,如VME、VXI 和PCI 總線,都可提供功率有限的3.3V、5V 和±12V(或±24V)電源,如果在這些系統(tǒng)中添加設備(如插卡等),則需要額外的3.3V或5V電源,這個電源通常由負載較輕的-12V電源提供。圖1 電路,將-12V 電壓升壓到15.3V(相對于-12V 電壓),進而得到3.3V 的電源電壓,輸出電流可達300mA。Q2 將3.3V 電壓轉換成適當?shù)碾妷海?10.75V)反饋給IC1 的FB 引腳,PWM 升壓控制器可提供1W 的輸出功率,轉換效率為83%。整個電路大約占6.25Cm2的線路板尺寸,適用于依靠臺式PC機電源供電,需要提供1W輸出功率的應用,這種應用中,由于-12V總線電壓限制在1.2W以內,因此需要保證高于83%的轉換效率。由于限流電阻(RSENSE)將峰值電流限制在120mA,N 溝道MOSFET(Q1)可選用廉價的邏輯電平驅動型場效應管,R1、R2 設置輸出電壓(3.3V 或5V)。IC1 平衡端(Pin5)的反饋電壓高于PGND引腳(Pin7)1.25V,因此:VFB = -12V + 1.25V = - 10.75V選擇電阻R1后,可確定:I2 = 1.25V / R1 = 1.25V / 12.1kΩ = 103μA可由下式確定R2:R2 = (VOUT - VBE)/ I2 =(3.3V - 0.7V)/ 103μA = 25.2 kΩ圖1 中,IC1 的開關頻率允許通過外部電阻設置,頻率范圍為100kHz 至500kHz,有利于RF、數(shù)據(jù)采集模塊等產(chǎn)品的設計。當選擇較高的開關頻率時,能夠保證較高的轉換效率,并可選用較小的電感和電容。為避免電流倒流,可在電路中增加一個與R1串聯(lián)的二極管。
上傳時間: 2013-10-17
上傳用戶:jixingjie
Abstract: Designers who must interface 1-Wire temperature sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to drive a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wire slave devices. The systemimplements a 1-Wire master connected to a UART and outputs temperature to a PC from the DS28EA00 temperaturesensor. In addition, high/low alarm outputs are displayed from the DS28EA00 PIO pins using LEDs.
標簽: PicoBlaze Create Master Xilinx
上傳時間: 2013-11-05
上傳用戶:a6697238
為實現(xiàn)基于PCI總線的運動控制,設計了一款以國產(chǎn)芯片CH365為核心的運動控制卡,給出設計原理圖,開發(fā)基于DOS的開源驅動函數(shù)庫和基于Windows的驅動程序及動態(tài)鏈接庫,并對運動控制卡驅動程序的編寫做了詳細的介紹,對中斷服務程序的工作流程也做了完整的說明,通過這些函數(shù)庫及驅動程序,可方便地對伺服電機進行步進式及脈沖式控制,實現(xiàn)各種方向連續(xù)的曲線加工和速度控制。經(jīng)測試,設計的運動控制卡在實時性、可靠性、插補速度和加工精度方面都有較大的優(yōu)勢,具有較好的應用前景。
上傳時間: 2013-11-09
上傳用戶:yeling1919