ISO/IEC INTERNATIONAL 9318-2 STANDARD First edition 1990-12-15 Information technology Intelligent Peripheral Interface Part 2: Device specific command set for magnetic disk drives Technologies deI'information- Interface pourles peripheriques intelligents Partie 2: Jeu de commandes specifiques appareil pour les unites disques magnetiques 9 Reference number ISO/IEC 9318-2 : 1990 (E) Copyright International Organization for Standardization tted without license from IHS Not for Resale ISO/IEC 9318-2 : 1990 (E) Contents Page 1 Scope 2 Normative references 3 3 Definitions and conventions 4 3.1 Definitions 4 3.2 Conventions 5 4 General description 6 4.1 Application environment . 6 4.2 Logical Interface characteristics 6 4.2.1 Siave Control 4.2.2 Information transfer 4.2.3 Data transfers 6 6 4.2.4 Format Control 4.3 Responsibility 6 4.3.1 Master 6 4.3.2 Slave 5 Physical Interface Considerations 5.1 Information transfer 5.1.1 Octet Mode 5.1.2 Transfer Mode 5.1.3 Termination of transfers 5.1.4 Data streaming 5.2' Bus Octets 5.2.1 Unsupported Bus Octets 5.2.2 Bus Control Octet 8 5.2.3 Mastcr Status Octct 8 5.2.4 Slave Status Octet 9 5.2.5 Request Interrupts Octet 9 5.2.5.1 Types of Interrupts 9 5.2.5.1.1 Class 1 Command Completion Interrupt 9 5.2.5.1.2 Class 2 RPS Interrupt 10 5.2.5.1.3 Class 3 Status Pending Interrupt 10 10 5.2.6 Address Octet Response 10 5.2.7 Selective Reset Octet 5.2.8 Selection Octet 11 11 5.2.9 Request Transfer Settings Octet 5.2.10 Slave Transfer Settings Octet 11 5.2.11 Request Slave Interrupts Octet 11 12 5.2.12 Slave Interrupts Octet 12 5.3 ATTENTION IN signal . 13 6 Slave Functions 13 6.1 Disk Format 13 6.1.1 Format 1 - Fixed Block Format 13 6.1.1.1 Fixed Block Hard Sector 13 6.1.1.2 Fixed Block Soft Sector 13 6.1.2 Format 2 - Variable Block Format 13 6.1.3 Format Control ?ISO/IEC1990 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. ISO/IEC Copyright Office · Case postale 56 : CH-1211 Geneve 20 : Switzerland Printed in Switzerland ii Device specific command set for magnetic disk drives Copyright International Organization for Standardization Not for Resale vorking permitted without license from IHS ISO/IEC 9318-2 : 1990 (E) 6.2 Format Specification 14 6.2.1 Format initialization . 14 6.2.2 Manufacturer's Format Specification 14 6.2.3 Fixed Block mode . . . : 15 6.2.3.1 Fixed Block Format Specification 15 6.2.3.1.1 Number of octets . . 15 Format Type Code 15 6.2.3.1.2 6.2.3.1.3 Flag Octet 15 6.2.3.1.4 Number of sectors per track 16 Number of physical octets per sector 6.2.3.1.5 16 Number of octets to be skipped during header verily 6.2.3.1.6 16 Number of fields per sector 6.2.3.1.7 16 6.2.3.1.8 Number of octets per field . 16 6.2.3.1.9 Master Turnaround Delay 16 6.2.4 Variable Block Mode 17 6.2.4.1 Variable Block Format Specification 17 6.2.4.1.1 Number of octets . . 17 Format Type code 6.2.4.1.2 17 6.2.4.1.3 Flag Octet 17 17 6.2.4.1.4 Cell length 6.2.4.1.5 RPS Divisions pcr track 17 6.2.4.1.6 Index Mark Gap length 18 6.2.4.1.7 Home Field Data Segment length 18 6.2.4.1.8 Home Field Gap length 18 6.2.4.1.9 Home Field Skip Length 18 6.2.4.1.10 Home Field retries 18 6.2.4.1.11 Header Field Data Segment length 18 6.2.4.1.12 Header Field Gap length 18 6.2.4.1.13 Data Field Gap length . 18 6.2.4.1.14 Defect Skip Scgment length 18 6.3 Slavc conditions 19 6.4 Dual Port (optional) 20 6.4.1 Port Enable/Disable 20 6.4.2 Slave Accessibility mode 20 6.4.2.1 Switching .... 21 6.4.2.2 Switch mechanism 6.4.3 Notification of alternate port exception condition 6.4.4 Attention . 6.5 Reset 6.5.1 Extcrnal Reset 6.5.2 Internal Reset . 6.7 Rotational Position Sensing (RPS) (optional) 6.7.1 RPS Target Sector Addrcss 6.7.2 RPS Interrupt . 6.8 Slave ECC (optional) 6.9 Powcr Sequencing (optional) 7 Bus Controls 7.1 Command/Response Controls 7.1.1 Load Slave F