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GB/T 7497.2-2008 English PDF

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GB/T 7497.2-2008: Microprocessor system bus. 8-bit and 16-bit data (MULTIBUS Ⅰ) -- Part 2: Mechanical and pin descriptions for the system bus configuration, with edge connectors (direct)
Status: Valid

GB/T 7497.2: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 7497.2-2008	English	234	Add to Cart	3 days [Need to translate]	Microprocessor system bus. 8-bit and 16-bit data (MULTIBUS Ⅰ) -- Part 2: Mechanical and pin descriptions for the system bus configuration, with edge connectors (direct)	Valid	GB/T 7497.2-2008
GB/T 7497.2-1987	English	279	Add to Cart	3 days [Need to translate]	Microprocessor system bus I, 8-bit and 16-bit data--Part 2: Mechanical and pin descriptions for the system bus configuration with edge connectors (direct)	Obsolete	GB/T 7497.2-1987

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Basic data

Standard ID	GB/T 7497.2-2008 (GB/T7497.2-2008)
Description (Translated English)	Microprocessor system bus. 8-bit and 16-bit data (MULTIBUS ��) -- Part 2: Mechanical and pin descriptions for the system bus configuration, with edge connectors (direct)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	L65
Classification of International Standard	35.200
Word Count Estimation	12,149
Date of Issue	2008-08-06
Date of Implementation	2009-01-01
Older Standard (superseded by this standard)	GB/T 7497.2-1987
Adopted Standard	IEC 60796-2-1990, 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 applies with edge connectors (direct fit) type microprocessor system backplane to connect the various parts of the interface.

GB/T 7497.2-2008: Microprocessor system bus. 8-bit and 16-bit data (MULTIBUS Ⅰ) -- Part 2: Mechanical and pin descriptions for the system bus configuration, with edge connectors (direct)

---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.
Microprocessor system bus 8-bit and 16-bit data (MULTIBUS Ⅰ) Part 2. Mechanical and pin descriptions for the system bus configuration, with edge connectors (direct) ICS 35.200 L65 National Standards of People's Republic of China GB/T 7497.2-2008/IEC 60796-2.1990 Replacing GB/T 7497.2-1987 Microprocessor system bus 8 and 16-bit data (MULTIBUSⅠ) Part 2. with edge connectors (direct) Description of mechanical and system bus configuration pins (IEC 60796-2.1990, 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

Preface Ⅰ Introduction Ⅱ 1 Scope 1 2 Objective 1 3 floor design basis 1 3.1 Relationship between the plate 1 3.2 System bus pin assignment 2 3.3 bus connector 2 4 shape factor 3 4.1 Connector naming and numbering standard 3 pin 4.2 standard form printed wiring board 3 GB/T 7497.2-2008/IEC 60796-2.1990

Foreword

GB/T 7497 "microprocessor system bus 8 and 16-bit data (MULTIBUSⅠ)" is divided into three sections. --- Part 1. Electrical and timing specifications functional description; --- Part 2. The description of the system bus with edge connectors (direct) configuration of mechanical and pins; --- Part 3. Mechanical and pin descriptions for the Eurocard configuration with pin and socket connectors (indirect) configuration. This part of GB/T 27497 Part of, identical with IEC 60796-2.1990 "Microprocessor system bus 8 and 16 Data (MULTIBUSⅠ) - Part 2. System bus with edge connectors (direct) mechanical configuration and pin description Said. " This section also IEC 60796-2.1990 made the following editorial changes. --- Deletion of the IEC 60791-2 "preface"; --- Increase the national standard foreword. This Part replaces GB/T 7497.2-1987 "Microprocessor system bus Ⅰ 8 and 16-bit data in the second part. the edge Connectors (direct) Mechanical and pin system bus configuration instructions. " This part of the GB/T 7497.2-1987 made the following main changes. --- Name from "Microprocessor system bus Ⅰ 8 and 16-bit data in the second part. the use of edge connectors (direct) as For the system bus configuration Mechanical and pin descriptions "with" Microprocessor system bus 8 and 16-bit data (MULTI- BUSⅠ) - Part 2. Mechanical and pin description of the system bus with edge connectors (direct) configuration "; Text --- text changes. This part of the National Information Technology Standardization Technical Committee and centralized. This section drafted by. China Ministry of Electronics Industry Standardization Institute. The main drafters of this section. Gao Jian, Marina Changshan, Weishu Yan, Zhang Yi Nan. This section was first released in 1987, this is the first revision. GB/T 7497.2-2008/IEC 60796-2.1990

Introduction

GB/T 7497 consists of three parts. a functional description and two are available mechanical standards. This standard allows a variety of micro-processing System components interact with each other in the electrical and mechanical interface. Parallel transmission channel and application interface bus is used as the tight coupling between the system components Interconnection number. GB/T 7497.2-2008/IEC 60796-2.1990 Microprocessor system bus 8 and 16-bit data (MULTIBUSⅠ) Part 2. with edge connectors (direct) Description of mechanical and system bus configuration pins

1 Scope

This section GB/T 7497 applies to the means of edge connectors (direct) type backplane to connect various components of the microprocessor system Interface. Objective 2 Printed circuit boards should be part of the GB/T 7497 is intended to describe the designer in the design of the system ready for insertion or backplane bus interface To all norms and physical care of the machinery. All dimensions are in millimeters marked in parenthesis notes inch digital reference (in Mm digital date).

3 floor design basis

Connecting the module base plate, the maximum length of 457.2mm (18in). Use backplane bus expansion board in the system are not supported unless The expansion board, including the total length of the bus is less than the maximum length of 457.2mm. 3.1 Relationship between the plates When designing board spacing of 15.3mm (0.6in) compatible board, the printed circuit board should follow the specification. a) board spacing (LC) When inserting the floor, away from the center of the board should be at least 15.24mm ± 0.51mm (0.6in ± 0.02in). b) plate thickness (LT) Typical thickness of the circuit board is 1.575mm ± 0.127mm (0.062in ± 0.005in). c) Component lead length (LL) Printed circuit board under the component lead can not exceed 2.362mm (0.093in). d) Component Height (LH). the maximum height of the components on the printed circuit board, is determined using the following formula. LH < LC-LT-LL LH < 14.732mm-1.702mm-2.362mm (0.58in-0.067in-0.093in) LH < 10.67mm (0.420in) (including the amount of warpage of the board). Conductive components required to reduce its LH to 10.16mm (0.40in). Separator shown in Figure 1 between the bottom plug. Typical examples of the base plate and the bottom plate towards such necessary components shown in Figure 2. This section includes only the design of the system bus interface mechanical performance specifications, the designer should consider the GB/T 7497.1-2008 Chapter 3 Electrical performance specifications. GB/T 7497.2-2008/IEC 60796-2.1990

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