Information technology — Microprocessor systems — VICbus — Inter-crate cable bus

The objectives are to provide a standard cable bus for the interconnection of multiple devices, both backplane bus systems, such as the IEC 821 VMEbus, and stand-alone apparatus; to specify the electrical characteristics of the cable bus; to specify the protocols that precisely define the interaction between devices connected to the VICbus; to specify the mechanisms necessary to construct fault-tolerant, multi-device systems; to provide the necessary definitions, terminology and background information to fully describe the VICbus protocols and other mechanisms.

Technologies de l'information — Systèmes à microprocesseurs — VICbus — Bus à câbles inter-châssis

General Information

Status
Published
Publication Date
15-Dec-1993
Current Stage
9093 - International Standard confirmed
Start Date
13-Jul-2018
Completion Date
19-Apr-2025
Ref Project

Relations

Standard
ISO/IEC 11458:1993 - Information technology -- Microprocessor systems -- VICbus -- Inter-crate cable bus
English language
92 pages
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Standards Content (Sample)


lSO/IEC
INTERNATIONAL
STANDARD
First edition
1993-l 2-01
Information technology -
Microprocessor systems -
VlCbus - llnter-crate cable bus
Technologies de /‘information -
Syst&mes a microprocesseurs -
WCbus - Bus a cables inter-chassis
Reference number
ISOA EC 11458: l993( E)
- - 6 ISO/IEC 11458 : 1993
CONTENTS
Page
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.*.
FOREWORD
Clause
1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Introduction to the ISO/IEC 11458 VICbus standard
........................................................................................................................
2.1 Objectives
.......................................................................................................
2.2 Standard terminology
.......................................................................................................
2.2.1 Rule
..................................................................................
2.2.2 Recommendation
...........................................................................................
2.2.3 Permission
.........................................................................................
2.2.4 Observation
..........................................................................................................
2.3 Other terminology
............................................................................................................
2.4 Timing diagrams
............................................................................................................................
2.5 Tables
.......................................................................................................
2.6 Data representation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Data transfer bus
3.1 Introduction .
.............................................................................................................
3.2 DTB cycle types
. 12
3.2.1 Direct cycles .
.........................................................................................
3.2.2 Transparent cycles
...................................................................................
3.3 Use of the DTB information lines
........................................................................................
3.3.1 The address phase
..............................................................................................
3.3.2 The data phase
...................................................................
Address / data lines AD31-ADO0
3.3.3
....................................................................................
Control lines CL3CLO
3.3.4
.............................................................................
Identification lines ID4-ID0
3.3.5
..................................................................
3.3.6 Device number signals DN4-DNO
...............................................................................
3.3.7 Address signals A31-A02
.............................................................
3.3.8 Address extension signals AES-AEO
...................................................................
Register select signals RS4-RSO
3.3.9
...............................................................................
Block transfer signal BLT
3.3.10
........................................................................................
3.3.11 Write signal WRITE
......... 16
3.3.12 Byte selection signals LWORD, AOl, ASELO, ASELI, DSELO, DSELI
. 18
....................
Interrupter number signals IN40IN0 .
3.3.13
.........................................................................
Slave response signal SERR
3.3.14
Data signals 031 -DO0 .
3.3.15
..........................................................................................
3.4 Transparent VME-A64 cycle
...............................................................
3.5 Data transfer cycle - bus protocols and timing
......................................................................................
3.5.1 Block transfer cycles
...............................................................................
3.52 Read-modify-write cycles
........................................................................................................
3.6 Compelled protocol
........................................................................................
The address phase
3.6.1
..............................................................................................
3 6.2 The data phase
:
...............................................................................................
3.7 Non-compelled protocols
.................................................................................
3.7.1 Non-compelled 1 (NCl)
.................................................................................
3.7.2 Non-compelled 2 (NC2)
..................................................................................
3.8 Slave participation in DTB cycles
Q ISO/lEC 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
ISOAEC Copyright Office l Case Postale 131 l CH-1211 Gen8ve 20 l Switzerland
Printed in Switzerland
w -
0 ISO/IEC 11458 : 1993
3.9 DTB timing rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
" 41
4 Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41 Introduction .
412 Lines .
4.3 Arbitration protocol .
4.4 Arbiter .
4.5 Requester . 43
4.6 Transfer of DTB mastership . 43
.......................................................................................................... 44
4.7 Loss of the arbiter
................................................................................................... 48
4.8 Arbitration timing rules
5 Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
51 . Introduction . 50
5.2 . Lines and signals . ” 50
53 . Interrupt request signal selection . 50
54 . Interrupt protocol . 51
. . 52
55 Interrupter
............................................................................................................. 53
56 . Interrupt handler
57 . Timing regulations .
I
6 Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.1 Introduction
Arbitration lock line ALOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 57
6.1 .l
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.1.2 Device failure line DEVFAIL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.1.3 Interrupt request select lines INTSELO and INTSELl
6.1.4 VlCbus reset line VICRESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 INTSEL generator selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .~.
6.3.1 Global reset - VICRESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.3.2 Selective reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Online and offline states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
6.4
6.4.1 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
,
Power-up condition . . . . . . . . . . . l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6.4.2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
6.5 Fautt tolerance
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.6 Cable connection and disconnection in robust systems
7 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Introduction .
7.2 Bus drivers and receivers .
7.3 Cables .
7.3.1 Cable characteristics .
.....................................................................................................................
7.4 Connectors
.................................................................................................................... 70
7.5 Terminators
Arbitration daisy-chain (BG line) termination . 70
7.5.1
Terminator power . 70
7.5.2
............................................................................. 70
7.5.3 Terminators and BGLOOP
7.6 Cable continuity for off line devices .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 VlCbus registers
....................................................................................................................
8.1 Introduction
..........................................................................................................
8.2 Register summary
..................................................................................
8.3 Control and status register - CSR
...............................................................................
...

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