Black Box IC540A Manual
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Black Box IC540A Manual

Black Box IC540A Manual

Ultra 2 scsi lvd expander
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AUGUST 2000
IC540A
Ultra 2 SCSI LVD Expander
L V D
C S I
d e r
a 2 S
x t e n
U l t r
d e E
t i m o
M u l
CUSTOMER
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
SUPPORT
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
INFORMATION
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com

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  • Page 1 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX SUPPORT FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 FCC/IC STATEMENTS FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO-FREQUENCY INTERFERENCE STATEMENTS Class B Digital Device. This equipment has been tested and found to comply with the limits for a Class B computing device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 3 ULTRA2 SCSI LVD EXPANDER NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
  • Page 4 NOM STATEMENT 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.

  • Page 5: Table Of Contents

    5.1 Applications That Will Work ............17 5.2 Applications That Won’t Work ............19 6. Troubleshooting ..................20 6.1 Calling Black Box ................20 6.2 Shipping and Packaging ..............20 Appendix A: Port Pinouts ................21 A.1 Low-Voltage Differential (LVD) Pinout ........... 21 A.2 Single-Ended (SE) Pinout ..............

  • Page 6: Specifications

    CHAPTER 1: Specifications 1. Specifications FCC Part 15 Subpart J Class B, IC Class/classe B Compliance — Interface — Wide (16-bit) Ultra2 SCSI (“Fast 40”), multimode (can be either LVD or single-ended, autosensing) Protocol — Transparent to synchronous or asynchronous communication Data Rate —...

  • Page 7: Introduction

    ULTRA2 SCSI LVD EXPANDER 2. Introduction 2.1 Overview The Ultra2 SCSI LVD Expander is a Low Voltage Differential (LVD) 16-bit Wide SCSI-bus extender. The Expander effectively divides the SCSI bus into two LVD or SE (single-ended) segments—one segment connected to each of its two ports. The Expander translates signals, and facilitates communication, between the segments.
  • Page 8 CHAPTER 2: Introduction The Expander supports all current SCSI operations and can handle data rates up to 20, 40, or 80 megabytes per second, depending on the type of bus it’s communicating with. Figure 2-1 shows a typical Expander application. If you’d like to examine a block diagram of the Expander, refer to Appendix B.

  • Page 9: Features

    TERMPWR with a resetting circuit protector and backflow-preventing diodes. 2.3 The Complete Package Besides the Ultra2 SCSI LVD Expander itself, you should have received its power cord and this manual. If anything is missing or arrived damaged, call Black Box right away.

  • Page 10: Configuration And Internal Leds

    CHAPTER 3: Configuration and Internal LEDs 3. Configuration and Internal LEDs 3.1 Opening the Expander To configure the Ultra2 SCSI LVD Expander’s termination, or to get visual confirmation of more information than the external LED can provide, you’ll need to access the Expander’s internal jumpers and LEDs. CAUTION! To avoid receiving a potentially hazardous electric shock, make sure the Expander is turned OFF and unplugged when you open it.
  • Page 11 ULTRA2 SCSI LVD EXPANDER Now you’re ready to set the jumpers. If you look at the open Expander from above, with its front panel facing right and its rear panel facing left, the jumper posts and internal LEDs will be arranged at the top and bottom edges of the circuit board, something like this: JP12 JP11...

  • Page 12: Configuring Termination

    CHAPTER 3: Configuration and Internal LEDs 3.2 Configuring Termination Both ends of any single-ended or LVD SCSI-bus segment attached to the Expander need to be terminated in order to prevent electronic “echo” interference on the bus that would degrade its performance. You can use the Expander’s internal jumpers JP1, JP4, JP9, and JP12 to control this termination.
  • Page 13 ULTRA2 SCSI LVD EXPANDER Termination enabled Host adapter Disk drive Bus A Bus B Ultra2 SCSI JP9 ON JP4 ON LVD Expander Figure 3-1. Both segments end, and are terminated, at the Expander. Termination enabled Host adapter Disk drive Multiconnector ribbon cable Bus A Bus A...
  • Page 14 NOTE It’s easy to make mistakes when installing external SCSI termination. If you’ll need to do so, please call Black Box Technical Support to discuss your application. If the remote termination for the segments that will be attached to the Expander can be handled with another device’s internal terminator, or with...

  • Page 15: Observing The Internal Leds

    ULTRA2 SCSI LVD EXPANDER 3.3 Observing the Internal LEDs After the Expander is open, you can attach the SCSI buses and power cord to the Expander as described in Chapter 4, then turn the unit ON and examine the LEDs mounted on the Expander’s circuit board.

  • Page 16: Installation

    CHAPTER 4: Installation and Operation 4. Installation and Operation 4.1 Connecting SCSI-Bus Cables To attach the Ultra2 SCSI LVD Expander to one end of a SCSI-bus segment, run SCSI cable from the desired port on the Expander to another SCSI device. CAUTION! Do not connect older (non-Ultra2) differential SCSI devices—also known as “high-voltage differential”...

  • Page 17: Connecting Ac Power And Observing The External Leds

    ULTRA2 SCSI LVD EXPANDER 4.2 Connecting AC Power and Observing External LEDs Run the included power cord from the IEC 320 male inlet on the rear of the Expander to a working AC outlet. Once you’ve plugged in the unit, flip the rocker switch on the rear of the unit to turn the Expander ON.

  • Page 18: Applications

    CHAPTER 5: Applications 5. Applications 5.1 Applications That Will Work Here are several ways in which Ultra2 SCSI LVD Expanders can be used in a SCSI- bus system, helping LVD and single-ended SCSI-bus segments to work as one logical SCSI bus. (As always, each bus segment must be terminated at both ends.) Figure 5-1 shows how to use an Expander to extend an Ultra SCSI (SCSI-3) bus beyond its normal distance limits to reach faraway LVD devices.
  • Page 19 ULTRA2 SCSI LVD EXPANDER Figure 5-2 shows how Ultra2 SCSI devices and legacy devices can be mixed with no speed degradation for the Ultra2 devices. Termination enabled Ultra2 SCSI LVD devices running at top 32-bit speed PCI bus Bus A Ultra2 SCSI host adapter Ultra2 SCSI...

  • Page 20: Applications That Won't Work

    CHAPTER 5: Applications 5.2 Applications That Won’t Work Here are two ways that you must avoid trying to use the Ultra2 SCSI LVD Expanders. Applications like that shown in Figure 5-4 won’t work, because devices on the left must send data through more than two Expanders to reach the devices on the right.

  • Page 21: Troubleshooting

    If you need to transport or ship your Expander: • Package it carefully. We recommend that you use the original container. • Before you ship the unit back to Black Box for repair or return, contact us to get a Return Authorization (RA) number.

  • Page 22: Appendix A: Port Pinouts

    APPENDIX A: Port Pinout Appendix A: Port Pinouts The tables in this appendix show the possible pinouts of Ports A and B on the Ultra2 SCSI LVD Expander. If the Expander detects that a port is attached to an LVD bus, it will use the LVD pinout listed in Section A.1. If the Expander detects that a port is attached to a single-ended bus, it will use the SE pinout listed in Section A.2.
  • Page 23 ULTRA2 SCSI LVD EXPANDER Signal Wire No. Wire No. Signal Name in Cable in Cable Name +BSY -BSY +ACK -ACK +RST -RST +MSG -MSG +SEL -SEL +C/D -C/D +REQ -REQ +I/O -I/O +DB(8) -DB(8) +DB(9) -DB(9) +DB(10) -DB(10) +DB(11) -DB(11)

  • Page 24: Single-Ended (Se) Pinout

    APPENDIX A: Port Pinout A.2 Single-Ended (SE) Pinout Single-ended signals whose names are preceded by “-” are active low. Signal Wire No. Wire No. Signal Name in Cable in Cable Name RETURN -DB(12) RETURN -DB(13) RETURN -DB(14) RETURN -DB(15) RETURN -DB(P1) RETURN -DB(0)
  • Page 25 ULTRA2 SCSI LVD EXPANDER Signal Wire No. Wire No. Signal Name in Cable in Cable Name RETURN -REQ RETURN -I/O RETURN -DB(8) RETURN -DB(9) RETURN -DB(10) RETURN -DB(11)

  • Page 26: Appendix B: Block Diagram

    APPENDIX B: Block Diagram Appendix B: Block Diagram Figure B-1 on the next page is a basic block diagram of the Expander. The receiver/transmitter pairs move the data from one bus to the other through the internal logic of the Expander, which takes care of cleaning up the signals as well as translating any differences between the buses.
  • Page 27 ULTRA2 SCSI LVD EXPANDER Figure B-1. Block diagram.
  • Page 28 LEGAL INFORMATION DISCLAIMERS Information in this manual is subject to change without notice. The manufacturer and its agents assume no responsibility for errors appearing in, or information omitted from, this manual.
  • Page 29 NOTES...
  • Page 30 © Copyright 2000. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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