MD21/S2 DISK CONTROLLER TECHNICAL MANUAL ( SCSI-COMPATIBLE) EMULEX 3545 Harbor Boulevard Costa Mesa, California 92626 MD2151003-00 Rev E (714) 662-5600 TWX 910-595-2521 March, 1988 WARNING This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the technical manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class B computing device pursuant to Subpart J of Part 15 of the Federal Communications Commission (FCC) Rules, which are designed to provide reasonable protection against such interference when operating in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. Emulex is a registered trademark of Emulex Corporation. IBM PC and IBM PC/XT are registered trademarks of International Business Machines Incorporated. Multibus is a registered trademark of Intel Corporation. Copyright (C) 1987 Emulex Corporation The information in this manual is for information purposes only and is subject to change without notice. Emulex Corporation assumes no responsibility for any errors which may appear in the manual. Printed in U.S.A. TABLE OF CONTENTS Section Page Preface................................................. vii ONE: INTRODUCTION 1.1 OVERVIEW... ................ 1-1 1.2 FEATURES ........................................ 1-2 1.3 ORGANIZATION OF THE MANUAL ....................... 1-3 TWO: GENERAL DESCRIPTION 2.1 INTRODUCTION..................................... 2-1 2.2 MD21 DISK CONTROLLER OVERVIEW ................... 2-1 2.2.1 PHYSICAL DESCRIPTION .......................... 2-1 2.2.2 FUNCTIONAL OVERVIEW .......... 2-3 2.2.2.1 8031 Microprocessor ......................... 2-5 2.2.2.2 Disk Formatter .............................. 2-5 2.2.2.3 Buffer Controller ........................... 2-5 2.3 SCSI BUS OVERVIEW ............................... 2-6 2.4 ESDI OVERVIEW ................................... 2-8 2.5 COMPATIBILITY ................................... 2-9 2.5.1 SCSI BUS HARDWARE COMPATIBILITY ............... 2-9 2.5.2 ESDI DISK DRIVE COMPATIBILITY ................. 2-9 THREE: DISK CONTROLLER SPECIFICATIONS 3.1 OVERVIEW ............................... 3-1 3.2 GENERAL AND ELECTRICAL SPECIFICATIONS ........... 3-1 3.3 PHYSICAL SPECIFICATIONS ......................... 3-3 3.4 ENVIRONMENTAL SPECIFICATIONS .......... 3-5 FOUR: DISK DRIVE PARAMETERS 4.1 OVERVIEW ..................... 4-1 4.2 ESDI DISK DRIVE PREPARATION ..................... 4-1 4.2.1 DRIVES SUPPORTED............................... 4-1 4.2.2 DRIVE PLACEMENT ................ 4-1 4.2.3 DRIVE NUMBERING ............................... 4-1 4.2.4 SPINDLE CONTROL................................ 4-2 4.2.5 DRIVE SECTORING AND OTHER OPTIONS ............. 4-2 4.3 DISK OPERATIONS .................................. 4-5 4.3.1 SECTOR AND TRACK FORMAT OPERATIONS ....... 4-5 4.3.2 GROWN DEFECT LIST OPERATIONS .................. 4-6 Table of Contents iii FIVE: INSTALLATION 5.1 OVERVIEW ........................................ 5-1 5.2 INSPECTION ...................................... 5-3 5.3 MD21 CONTROLLER SETUP ........................... 5-3 5.3.1 SWITCH SETTINGS ............................... 5-3 5.3.1.1 SCSI Device Address Selection (SWl-1 through SWl-3) ...................... 5-4 5.3.1.2 Sector Size (SWl-5) 5-5 5.3.1.3 Disable Drive Spin up (SWl-6)................ 5-6 5.3.1.4 Disable Soft Error Reporting (SWl-7) 5-6 5.3.1.5 SCSI Bus Parity Enable (SWl-8) 5-7 5.3.2 SCSI BUS TERMINATION POWER OPTION ............. 5-7 5.3.3 SCSI BUS TERMINATION .......................... 5-8 5.4 MD21 CONTROLLER INSTALLATION .................... 5-8 5.5 FCC COMPLIANCE .................................. 5-11 SIX: CONTROLLER INITIALIZATIONAND SELF-TEST PROCEDURES 6.1 OVERVIEW......................................... 6-1 6.2 CONTROLLER RESET/POWER UP INITIALIZATION.......... 6-1 6.2.1 SELF-TEST SEQUENCE............................. 6-1 6.2.2 INITIALIZATION SEQUENCE........................ 6-3 6.3 SELF-TEST MODES.................................. 6-5 6.3.1 NORMAL MODE.................................... 6-5 6.3.2 BURN-IN MODE............ 6-7 6.4 ONLINE DIAGNOSTIC COMMANDS.............. -.,...... 6-9 SEVEN: INTERFACES 7.1 OVERVIEW ........................................ 7-1 7.2 SCSI BUS INTERFACE ............ 7-1 7.2.1 SCSI BUS INTERFACE PHYSICAL DESCRIPTION ....... 7-1 7.2.1.1 Internal Cable Requirements ................. 7-2 7.2.1.2 Shielded Cable Requirements ................. 7-2 7.2.2 SCSI INTERFACE ELECTRICAL DESCRIPTION ......... 7-3 7.2.2.1 Output Signal Characteristics................ 7-3 7.2.2.2 Input Signal Characteristics................. 7-4 7.2.2.3 Terminator Power (Optional) ................. 7-5 7.2.3 SCSI BUS SIGNALS AND TIMING ................... 7-5 7.2.3.1 SCSI Bus Signals ............................ 7-5 7.2.3.2 SCSI Bus Timings ............................ 7-9 7.3 ESDI DISK DRIVE INTERFACE ...................... 7-13 7.3.1 ESDI INTERFACE ELECTRICAL DESCRIPTION ......... 7-13 7.3.1.1 Output Signal Characteristics ............... 7-13 7.3.1.2 Input Signal Characteristics ................ 7-14 7.3.1.3 Termination ................................. 7-14 7.3.1.4 ESDI Signals ................................ 7-14 iv Table of Contents SEVEN: INTERFACES (continued) 7.4 USER PANEL CONNECTION .......................... 7-18 7.4.1 OUTPUTS FROM THE MD21 .... 7-19 7.4.2 WRITE-PROTECT INPUTS TO THE MD21 .............. 7-19 7.4.3 POWER FAIL DETECT SIGNAL ..................... 7-20 7.5 DC POWER CONNECTION ................. .......... 7-20 APPENDIX A: TROUBLESHOOTING A. 1 OVERVIEW ..................... A-l A.2 PROBLEM IDENTIFICATION .......................... A-l A.3 TECHNICAL ASSISTANCE ............................ A-l A. 4 SERVICE •...... .................................. A-2 A. 5 SCSI PRODUCT PERFORMANCE REPORT ................. A-3 APPENDIX B: PROM REMOVAL AND REPLACEMENT B. l OVERVIEW...................... .................. B—1 B.2 EXCHANGING PROMS ................................. B-l TABLES Table Title Page 2- 1 Emulex-Certified ESDI Disk Drives ............. 2-10 3- 1 General and Electrical Specifications .......... 3-1 3-2 Physical Specifications ............... 3-4 3- 3 Environmental Specifications ................... 3-5 4- 1 Recommended Disk Parameters for ESDI Drives .... 4-3 5- 1 DIP Switch Settings, MD21 Controller ........... 5-4 5-2 SCSI Device Address Selection Switches ......... 5-5 5- 3 Disk Drive Cable Requirements .................. 5-11 6- 1 LED Sequences for Self-Test Procedure .......... 6-3 6-2 LED Test Code Descriptions ..................... 6-6 6-3 MD21 Controller Test Code Descriptions ...... 6-8 6-4 MD21 Controller Diagnostic Subcommands ......... 6-9 Table of Contents v TABLES (continued) Table Title Page 7-1 SCSI Bus Signals................................ 7-7 7-2 Single-Ended Pin/Signal Assignments at SCSI Bus Interface................................ 7-8 7-3 Disk Drive Cable Requirements....... 7-13 7-4 Control Cable Pin Assignments................... 7-16 7-5 Data Cable Pin Assignments...................... 7-17 7-6 Connector J4 Pin Description................... 7-19 7-7 Power Supply Connections ....................... 7-21 FIGURES Figure Title Page 2-1 MD21 Disk Controller........................... 2-2 2-2 MD21 Controller Block Diagram.................. 2-4 2-3 Sample SCSI Bus Configuration................... 2-7 2- 4 Typical Multi-Drive Configuration.............. 2-8 3- 1 MD21 Controller Dimensions...................... 3-5 4- 1 Sector Format for Hard-Sectored Disk Drives.... 4-7 4- 2 Sector Format for Soft-Sectored Disk Drives..... 4-8 5- 1 MD21 Configuration Reference Sheet............. 5-2 5-2 Sector Size Switch Setting...................... 5-5 5-3 Drive Spin Up Switch Setting................... 5-6 5-4 Soft Error Reporting Switch Setting............. 5-6 5-5 Parity Enable Switch Setting................... 5-7 5-6 Installing the MD21 Controller on the Mounting Bracket............................. 5-10 5-7 Connecting the Disk Drive Data and Control Cables and the SCSI bus to the MD21 Controller 5-10 6- 1 Location of LEDs on the MD21 Controller........ 6-6 7- 1 MD21 Controller Component Locations............ 7-3 7-2 SCSI Bus Signals Termination.................... 7-4 7-3 SCSI Bus Timing Diagram................. 7-10 7-4 ESDI Control Cable Pin/Signal Assignments....... 7-15 7-5 ESDI Data Pin/Signal Assignments................ 7-17 7-6 Sample User Panel............... 7-18 7-7 Write-Protect Input Signal..................... 7-19 7-8 Pin Locations for Power Connector ........ 7-20 vi Table of Contents PREFACE This reference manual explains how to install, test, and operate the MD21 Disk Controller. It provides you with the following information: • Installation instructions • Disk Controller Specifications • Compatibility information • Drive Configuration Parameters • Initialization and Self-Test Procedures • Interface information • A guide to troubleshooting • PROM Removal and Replacement This manual has been designed to be used with the Emulex SCSI Disk Controller Programming Reference Manual (manual number MD2352501) and it assumes familiarity with the SCSI standard and the ESDI disk drive interface specification. The Small Computer System Interface (SCSI) command set for the MD21 Controller is based on the ANSI X3.131-1986 SCSI Specification. Copies of the ANSI SCSI Specification can be obtained from the following publisher: American National Standard for