GB/T 13724-2008 English PDF

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GB/T 13724-2008: 821 BUS-Microprocessor system bus for 1 to 4 byte data
Status: Valid

GB/T 13724: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 13724-2008	3814	Add to Cart	12 days	821 BUS-Microprocessor system bus for 1 to 4 byte data	Valid
GB/T 13724-1992	RFQ	ASK	10 days	821 Bus--Microprocessor system bus for 1 to 4 byte data	Obsolete

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Basic data

Standard ID: GB/T 13724-2008 (GB/T13724-2008)
Description (Translated English): 821 BUS-Microprocessor system bus for 1 to 4 byte data
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L65
Classification of International Standard: 35.200
Word Count Estimation: 191,186
Date of Issue: 2008-08-06
Date of Implementation: 2009-01-01
Older Standard (superseded by this standard): GB/T 13724-1992
Quoted Standard: IEC 297-1-1982; IEC 297-3-1984; IEC 603-2-1980; IEC 822-1988; IEC 823-1990
Adopted Standard: IEC 60821-1991, IDT
Regulation (derived from): Announcement of Newly Approved National Standards No. 12 of 2008 (No. 125 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies a method for using single or multiple microprocessors, high-performance micro-computer system backplane bus, specifically including the 821 bus standard overview, 821 bus data transfer bus, the data transfer bus arbitration priority interrupt bus, common bus, electrical specifications and mechanical specifications and so on.

GB/T 13724-2008: 821 BUS-Microprocessor system bus for 1 to 4 byte data

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
821 BUS-Microprocessor system bus for 1 to 4 byte data ICS 35.200 L65 National Standards of People's Republic of China GB/T 13724-2008/IEC 60821.1991 Replacing GB/T 13724-1992 821-byte data bus 1-4 microprocessor System bus (IEC 60821.1991, IDT) Posted 2008-08-06 2009-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 0 Introduction 1 0.1 Scope 1 0.2 Normative references 1 0.3 pairs of readers Note 1 Overview 1821 bus standard 1 821 1.1 bus standard object 1 1.2 821 system bus interface unit 1 Some 821 1.3 bus standard described in FIG. 5 1.4 5 standard terminology used 1.5 Protocol Specification 8 1.6 System of illustration and description 9 2821 bus data transfer bus 9 2.1 Introduction 9 2.2 data transfer bus lines 9 2.3 data transfer bus module --- basic description 16 Typical operating 30 2.4 Get 2.5 data transfer bus 34 2.6 data transfer bus timing rules and instructions 34 3821 bus data transfer bus 64 arbitration Principle 64 3.1 Bus Arbitration 3.2 Arbitration bus line 66 3.3 function module 68 Typical operating 73 3.4 3.5 master arbitration request and allow competition among 79 4821 bus priority interrupt bus 81 4.1 Introduction 81 4.2 priority interrupt bus line 81 4.3 priority interrupt bus module --- basic description 85 Typical operating 93 4.4 98 4.5 Competition conditions 4.6 priority interrupt bus timing rules and instructions 99 5821 common bus 115 bus 5.1 Introduction 115 5.2 common bus signal line 115 5.3 Public bus module 115 5.4 System initialization and diagnostics 119 5.5 Power 121 pins GB/T 13724-2008/IEC 60821.1991 5.6 reserve line 121 6821 122 electrical bus specification 6.1 Introduction 122 6.2 Power Distribution 122 6.3 electrical signal characteristic 123 6.4 bus driver and receiver requirement 124 6.5 backplane interconnect signal line 128 6.6 User-defined signal 132 6.7 signal line drive and termination 132 7821 Bus mechanical specifications 133 7.1 Introduction 133 7.2 821 134 Bus 7.3 Front Panel 137 7.4 plate 139 7.5 821 bus chassis assembly 140 7.6 821 buses and 821 bus backplane connector board connector 158 (Normative) Summary of terms Appendix A 821 bus 160 Appendix B (normative) 821 bus connector pin descriptions 164 Appendix C (Normative Appendix) SERCLK and SERDAT line 166 Annex D (informative) Stability and Asia resynchronization 168 Annex E (informative) ability to license a subset of 181 GB/T 13724-2008/IEC 60821.1991

Foreword

GB/T 13723-2008 identical with IEC 60821.1991 "821-byte data bus 1-4 Microprocessor system bus." This standard also IEC 60821.1991 made the following editorial changes. --- Remove the IEC 821 the "preface"; --- Increase the national standard foreword; --- Standard text "international standard" unified to "standard." This standard replaces GB/T 13724-1992 "821-byte data bus 1-4 Microprocessor system bus", and GB/T 13724- Compared to 1992, the main change is the addition of Appendix D and Appendix E. The Standard Appendix A, Appendix B and Appendix C are normative appendices, Appendix D and Appendix E is an informative annex. The standard proposed by the People's Republic of China Ministry of Information Industry. This standard by the National Information Technology Standardization Technical Committee. This standard was drafted. China Electronics Standardization Institute. The main drafters of this standard. Gao Jian, chief Peter Hill, Zhang Yi Nan. This standard was first published in 1992. GB/T 13724-2008/IEC 60821.1991 821-byte data bus 1-4 microprocessor System bus 0 Introduction 0.1 Scope The standard provides a high-performance backplane bus, for single or multiple microprocessors microcomputer systems. This backplane-based VME bus specification, the VME manufacturer group in August 1982 release. The bus includes four total seed Line. data transfer bus priority interrupt bus, bus and utility bus arbitration. It supports data transfer bus non-multiplexed data type 8, 16 and 32 on the delivery address and the information superhighway. Asynchronous transfer protocol are used and full handshaking. Priority Off the bus system to provide real-time interrupt service. Identity dominated by the bus arbitration bus assignment, which allows for bus arbitration cycle Type and priority of the two kinds of arbitration algorithms. Utility power-system bus provides synchronized with the power off. Various boards, backplanes, chassis and outer Shells are based on IEC 297. 0.2 Normative References The IEC standard referenced in the following publications. 297-1 (1982). 482.6mm (19in) series of the size of the mechanical structures - Part 1. Panels and racks 297-3 (1984). plug-in unit associated with the frame 603-2 (1980). Part 2 for frequencies below 3MHz printer connector board used. for a universal mounting features, group Basic grid of 2.54mm (0.1in) printers use two board connectors 822 (1988). IEC 822VSB IEC 821VHE bus parallel bus subsystem 823 (1990). Microprocessor system bus (VHS bus) IEC 821 bus (VHE bus) serial bus subsystem 0.3 pairs of readers Note IEC 822 bus 47B by clubs as IEC 821 bus subsystem bus to be standardized, and thus the composition of the present standard. IEC 823 bus as the bus of the IEC 821 serial bus, expressed by JTS1/SC to a standardized bus. Overview 1821 bus standard 821 1.1 bus standard object 821 bus standard defines in a tightly coupled hardware configuration for interconnecting data processing, data storage and peripheral device access control Port system. The purpose of the interface system are as follows. a) to allow communication between the devices on the bus 821, 821 does not interfere with the activities of other equipment inside the bus interface; b) provides electrical and mechanical characteristics of the system, so that the design of the device can be reliably and 821 bus interface communication with other devices; c) specifies the interaction between the 821 bus interface device and its protocol; d) Provide a description of the system protocol terms and definitions; e) allows greater design margin to allow designers to optimize performance and low cost, without affecting the compatibility of the system; f) provides a major performance by limiting the device without restriction system interface system. 1.2 821 system bus interface unit 1.2.1 Basic Definitions From the mechanical structure and functional structure of two terms to describe the structure 821 bus. Mechanical specification describes the chassis, backplanes, front Panels, boards and other physical dimensions. 821 bus functional specification describes how the bus works in every operation which involved work Energy module, and control some of the rules which they run. This section describes the physical and mechanical structure for the 821 bus basic terminology mention two aspects For the definition. GLOSSARY OF TERMS Appendix A. GB/T 13724-2008/IEC 60821.1991 ......

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