logo资料库

PC104引脚图.pdf

发布时间：2022-05-30 发布人：admin 分类：说明书 资料大小：0.20M 资料格式：pdf 举报 版权申诉
第1页 / 共25页
第2页 / 共25页
第3页 / 共25页
第4页 / 共25页
第5页 / 共25页
第6页 / 共25页
第7页 / 共25页
第8页 / 共25页
资料共25页，剩余部分请下载后查看
    PC/104 Specification Version 2.5 November 2003 Please Note This specification is subject to change without notice. While every effort has been made to ensure the accuracy of the material contained within this document, the PC/104 Embedded Consortium shall under no circumstances be liable for incidental or consequential damages or related expenses resulting from the use of this specification. If errors are found, please notify the PC/104 Embedded Consortium. PC/104 is a trademark of the PC/104 Embedded Consortium. All other marks are the property of their respective companies. Copyright 1992-2003, PC/104 Embedded Consortium PC/104 Specification Version 2.5 — Page i
    PC/104 Specification Version 2.5 — Page ii
    REVISION HISTORY Version 1.0, March 1992 - Initial release. Version 2.1, July 1994 - Revised specification incorporating changes to conform with IEEE P996.1 draft version D1.00: a. Changed bus options. Eliminated the "option 2" configurations having right-angle P1 and P2 connectors. Created new "option 2" configurations similar to "option 1,” but without the stackthrough pins. Added a statement indicating that a P2 connector may be included on 8- bit modules, if desired. b. Added two additional mounting holes to 8-bit bus versions, making the mounting hole patterns of both 8- and 16-bit modules identical. c. Added an I/O connector region along the bus edge of the module. d. Increased widths of I/O mating-connector regions from 0.4" to 0.5". e. Changed lengths of I/O mating-connector regions so that their edges align with the outer edges of the annular rings of adjacent mounting holes. f. Reduced the bus drive requirement on the signals that had been specified at 6 mA to 4 mA. g. Added specification of module power requirements. h. In Appendix C, Section 3, changed minimum value of pullup resistance on shared interrupt line from 10K to 15K ohms. i. Added a section defining levels of PC/104 conformance. Version 2.2, September 1994 a. Added correction sheet showing revised schematic for Appendix C. Version 2.3, June 1996 a. Incorporated correction to Appendix C schematic. b. Changed P2 connector Pin 1 designation in 16-bit module dimension drawings. c. Added metric dimensions, including metric versions of module dimension drawings. d. Minor formatting changes. Version 2.4, August 2001 a. Added Appendix D Connector Specifications. b. Removed all specific company references. c. Corrected Consortium address and phone numbers d. Added new reference for ISA specification e. Cleaned up mechanical drawings PC/104 Specification Version 2.5 — Page iii
    Version 2.5, November 2003 a. Reformatted and updated 1. New Chapter 2 “ISA Signal Definition” has been added 2. Chapter 3 “Electrical Specification” is now Chapter 4. 3. Chapter 4 “Levels of Conformance” is now Chapter 5. 4. Appendix D “Connector Specifications has been combined with Appendix A b. Signal names have been updated to reflect the names referenced in Edward Solari’s book “ISA & EISA Theory & Operation” 1. IOCHCHK* relabeled to IOCHK* 2. RESETDRV relabeled to RESET 3. ENDXFR* relabeled to SRDY* 4. SYSCLK relabeled to BCLK 5. MASTER* relabeled to MASTER16* c. Mechanical drawings have been redone in AutoCAD showing both English and Metric units. d. Contact finish female interface has been changed from 20 micoinches minimum to 15 microinches in Figure 5 e. Mechanical performance withdrawal force has been change from 1 ounce minimum average to 1 ounce per pin minimum in Figure 5 PC/104 Specification Version 2.5 — Page iv
    TABLE OF CONTENTS 1. INTRODUCTION................................................................................................................... 1 1.1 1.2 References....................................................................................................................... 1 Contact Information ........................................................................................................ 2 2. MECHANICAL SPECIFICATIONS...................................................................................... 3 2.1 Module Dimensions ........................................................................................................ 3 2.2 Module Stack Options..................................................................................................... 3 2.3 Key Locations ................................................................................................................. 3 3. ISA SIGNAL DEFINITION ................................................................................................... 5 3.1 3.2 3.3 3.4 3.5 Address and Data ............................................................................................................ 5 Cycle Control .................................................................................................................. 5 Bus Control ..................................................................................................................... 6 Interrupt........................................................................................................................... 6 DMA ............................................................................................................................... 6 4. ELECTRICAL SPECIFICATIONS........................................................................................ 7 Signal Assignments......................................................................................................... 7 4.1 Added Grounds ............................................................................................................... 7 4.2 AC Signal Timing........................................................................................................... 7 4.3 DC Signal Levels ............................................................................................................ 7 4.4 Bus Drive Current ........................................................................................................... 7 4.5 Interrupt-Sharing Option................................................................................................. 8 4.6 4.7 Bus Termination Option ................................................................................................. 8 4.8 Module Power Requirements.......................................................................................... 8 5. LEVELS OF CONFORMANCE ............................................................................................ 9 5.1 5.2 PC/104 "Compliant" ....................................................................................................... 9 PC/104 "Bus-compatible" ............................................................................................... 9 APPENDICIES A. MECHANICAL DIMENSIONS......................................................................................... A-1 B. BUS SIGNAL ASSIGNMENTS......................................................................................... B-1 C. INTERRUPT-SHARING OPTION .................................................................................... C-1 C.1 Introduction................................................................................................................. C-2 C.2 Recommended Circuit ................................................................................................ C-2 C.3 Restrictions ................................................................................................................. C-3 "ISA Compatibility" Option Jumper........................................................................... C-3 C.4 PC/104 Specification Version 2.5 — Page v
    TABLE OF FIGURES Figure 1: A Possible Module Stack Configuration ......................................................................... 4 Figure 2: PC/104 8-bit Module Dimensions............................................................................... A-2 Figure 3: PC/104 16-bit Module Dimensions............................................................................. A-3 Figure 4: 8-bit and 16-bit ISA Bus Connector Dimensions........................................................ A-4 Figure 5: 8-bit and 16-bit ISA Bus Connector Specifications .................................................... A-5 Figure 6: Typical Interrupt-Sharing Circuit ................................................................................ C-2 Table 1: Module Power Requirements ........................................................................................... 8 TABLE OF TABLES Table 2: 8-bit and 16-bit ISA Bus Signal Assignments .............................................................. B-2 PC/104 Specification Version 2.5 — Page vi
    PC/104 SPECIFICATION Version 2.5 – March 2003 INTRODUCTION 1. While the PC and PC/AT architectures have become extremely popular in both general purpose (desktop) and dedicated (non-desktop) applications, its use in embedded microcomputer applications has been limited due to the large size of standard PC and PC/AT motherboards and expansion cards. This document supplies the mechanical and electrical specifications for a compact version of the ISA (PC and PC/AT) bus, optimized for the unique requirements of embedded systems applications. The specification is herein referred to as "PC/104," based on the 104 signal contacts on the two bus connectors (64 pins on P1, plus 40 pins on P2). Briefly, the needs of embedded applications have been satisfied by PC/104, through the following key differences from standard ISA bus: n Reducing the form-factor, to 3.550 by 3.775 inches (90 by 96 mm). n Eliminating the need for backplanes or card cages, through its self-stacking bus. n Minimizing component count and power consumption (to typically 1-2 Watts per module), by reducing required bus drive on most signals to 4 mA. PC/104 specifies two module versions — 8-bit and 16-bit — which correspond to the PC and PC/AT bus implementations, respectively. 1.1 References The remainder of this specification covers the differences from the ISA bus as detailed in Edward Solari’s book ISA and EISA Theory and Operation published by Annabooks. Designers of modules and systems based on PC/104 should be familiar with the ISA specification. It is available from: Annabooks 12860 Danielson Court Poway, CA USA 92064 Tel 800.462.1042 or 858.435.2000 Fax 858.391.5616 On the web at http://www.annabooks.com PC/104 Specification Version 2.5 — Page 1
    1.2 Contact Information If errors are found in this document, please send a written copy of the suggested corrections to: PC/104 Embedded Consortium P.O. Box 78008 San Francisco, CA 94107-8008 Tel 415.243.2104 Fax 415.836.9094 E-mail info@pc104.org Website http://www.pc104.org PC/104 Specification Version 2.5 — Page 2
    分享到：
    赞 收藏

    相关推荐

    资料库

    开发技术

    共收录19306份资料，累计14个分类，关注成员有19位，主要包括：Actionscript,Javascript,PHP,VB,Perl,Delphi,Python,C#,C,Java,C++,Web开发,硬件开发,其它

    热门标签

    Actionscript Javascript PHP VB Perl Delphi Python C# C Java C++ Web开发 硬件开发 其它

    最新资料