ISO/IEC 15205:2000
(Main)SBus - Chip and module interconnect bus
SBus - Chip and module interconnect bus
An input/output expansion bus with a 32- or 64-bit width is described in this standard. The SBus is designed for systems requiring a small number expansion ports. SBus Cards may be connected to a standard Sbus Connector mounted on the motherboard. SBus Devices may also be attached to the SBus directly on the system's motherboard. The dimensions of the SBus Card are 83,8 mm by 146,7 mm, making the cards appropriate for small computer systems that make extensive use of highly integrated circuits. The SBus Cards are designed to be installed in a plane parallel to the system's motherboard as mezzanine cards. They are designed to provide connections for devices external to the computer system through an exposed back panel. The form factor is useful in Futurebus+, VMEbus, desktop computers, and similar applications. The SBus has the capability of transferring data at rates up to 168 Mbytes/s, depending on the implementation options selected. SBus Cards may either serve as Masters on the bus, providing all virtual address information as well as the data to be transferred, or they may serve as Slaves on the bus, providing data transfer according to the requirements of some other SBus Master. The SBus Master for a data transfer is selected by an arbitration process managed by the single SBus Controller on the SBus. The SBus Controller provides a virtual to physical address translation service.
General Information
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD
15205
IEEE
Std 1496
First edition
2000-06
SBus – Chip and module interconnect bus
Reference number
ISO/IEC 15205:2000(E)
IEEE
Std 1496, 1993 Edition
---------------------- Page: 1 ----------------------
Abstract: An input/output expansion bus with a 32- or 64-bit width is described in this standard.
The SBus is designed for systems requiring a small number expansion ports. SBus Cards
may be connected to a standard Sbus Connector mounted on the motherboard. SBus Devices
may also be attached to the SBus directly on the system's motherboard. The dimensions of
the SBus Card are 83,8 mm by 146,7 mm, making the cards appropriate for small computer
systems that make extensive use of highly integrated circuits. The SBus Cards are designed
to be installed in a plane parallel to the system's motherboard as mezzanine cards. They are
designed to provide connections for devices external to the computer system through an
exposed back panel. The form factor is useful in Futurebus+, VMEbus, desktop computers,
and similar applications. The SBus has the capability of transferring data at rates up to
168 Mbytes/s, depending on the implementation options selected.
SBus Cards may either serve as Masters on the bus, providing all virtual address information
as well as the data to be transferred, or they may serve as Slaves on the bus, providing data
transfer according to the requirements of some other SBus Master. The SBus Master for a
data transfer is selected by an arbitration process managed by the single SBus Controller on
the SBus. The SBus Controller provides a virtual to physical address translation service.
Keywords: I/O bus, SBus, SBus Card, Standard for Boot Firmware.
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Copyright © 1993 by the Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. First published in 1993.
ISBN 2-8318-5165-3
No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without
the prior written permission of the publisher.
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INTERNATIONAL ISO/IEC
STANDARD
15205
IEEE
Std 1496
First edition
2000-06
SBus – Chip and module interconnect bus
Sponsor
Bus Architecture Standards Committee
of the IEEE Computer Society
PRICE CODE
X
For price, see current catalogue
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– 2 – ISO/IEC 15205:2000(E)
IEEE Std 1496, 1993 Edition
CONTENTS
Page
FOREWORD . 4
INTRODUCTION .5
Clause
1 General. 8
1.1 Scope and object . 8
1.2 Normative references. 8
2 Definitions, usage of special terms, acronyms, and editorial conventions . 9
2.1 Definitions . 9
2.2 Usage of special terms . 13
2.3 Acronyms. 13
2.4 Editorial conventions. 13
3 Overview. 14
3.1 System overview. 14
3.2 Overview of configurations. 16
3.3 General design information . 19
3.4 Performance . 21
4 Signal definitions . 23
4.1 CLK signal . 23
4.2 RST* signal . 24
4.3 PA[27:0] signals. 25
4.4 SEL* signal.
...
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