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Blackbox Ultra 2 Manual

Scsi lvd/hvd multimode expander
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Ultra 2 SCSI LVD/HVD
Multimode Expander
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
/ H V D
L V D
r
n d e
C S I
x p a
a 2 S
d e E
U l t r
t i m o
M u l
AUGUST 2000
IC541A

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Summary of Contents for Blackbox Ultra 2

  • 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/HVD MULTIMODE 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

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER Contents Chapter Page 1. Specifications ..................... 5 2. Introduction ....................6 2.1 Overview ....................6 2.2 Features ....................8 2.3 The Complete Package ............... 8 3. Configuration and Internal LEDs ............. 9 3.1 Opening the Expander ............... 9 3.2 Configuring Termination ..............

  • Page 6: Specifications

    CHAPTER 1: Specifications 1. Specifications Compliance — FCC Part 15 Subpart J Class B, IC Class/classe B Interfaces — LVD/SE port: Wide (16-bit) Ultra2 SCSI (“Fast 40”), multimode (can be either LVD or single-ended, autosensing); HVD port: Wide (16-bit) Ultra SCSI, high-voltage differential Transparent to synchronous or asynchronous Protocol —...

  • Page 7: Introduction

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER 2. Introduction 2.1 Overview The Ultra2 SCSI LVD/HVD Multimode Expander is a 16-bit Wide SCSI Low Voltage Differential (LVD) to High Voltage Differential (HVD) converter. The Expander effectively divides the SCSI bus into one LVD or SE (single-ended) segment (connected to its “LVD/SE”...
  • 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

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER 2.2 Features • Supports legacy and Ultra2 SCSI devices on the same bus with LVD-to-HVD or SE-to-HVD conversion: – Fully backward-compatible with SCSI-1, SCSI-2 [Fast SCSI], and SCSI-3 [Ultra SCSI], and can be used with either Narrow or Wide buses. –...

  • 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/HVD Multimode Expander’s termination, you’ll need to access the Expander’s internal jumpers. CAUTION! To avoid receiving a potentially hazardous electric shock, make sure the Expander is turned OFF and unplugged both when you open it and for the entire period of time it stays open.
  • Page 11 ULTRA2 SCSI LVD/HVD MULTIMODE 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: HVD TERM ENABLE = OFF LVD TERM ENABLE = ON...

  • Page 12: Configuring Termination

    CHAPTER 3: Configuration and Internal LEDs 3.1 Configuring Termination Both ends of any 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, and JP5 to control this termination.
  • Page 13 ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER Termination enabled Host adapter Disk drive LVD bus HVD bus Expander Lower Upper JP5 ON JP5 OFF Figure 3-1. Both segments end, and are terminated, at the Expander. Termination enabled Host adapter Disk drive Multiconnector ribbon cable LVD bus Lower...
  • Page 14 CHAPTER 3: Configuration and Internal LEDs • Termination at the Other End(s) of the Segment (JP1 and JP4): The JP1 and JP4 jumper posts control whether or not the Expander provides TERMPWR output to support remote termination. To explain: Most of the current generation of SCSI host adapters, disk drives, and other devices have built-in internal terminators, like those in the Expander, that can be used to terminate the SCSI bus if that device happens to be the first or last device attached to the bus.

  • Page 15: Installation

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER 4. Installation and Operation 4.1 Connecting SCSI-Bus Cables To attach the Ultra2 SCSI LVD/HVD Multimode Expander to one end of a SCSI- bus segment, run SCSI cable from the desired port on the Expander to another SCSI device: from the HVD port to an HVD device, from the LVD/SE port to an LVD or SE device.

  • Page 16: Connecting Ac Power And Observing The External Leds

    CHAPTER 4: Installation and Operation Keep in mind that the maximum cable lengths allowed on any SCSI bus are fairly strict, though they vary by the type of bus and by the cable size and insulation. Table 4-1 lists the maximum recommended cable lengths for each type of SCSI interface that the Expander supports.

  • Page 17: Applications

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER 5. Applications 5.1 Applications That Will Work Here are several ways in which Ultra2 SCSI LVD/HVD Multimode 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 allow an HVD adapter to reach LVD devices.
  • Page 18 CHAPTER 5: Applications Figure 5-2 shows how LVD and HVD devices can be mixed with no speed degradation for the LVD devices. Termination enabled Ultra2 SCSI 32-Bit LVD devices PCI Bus running at LVD bus top speed Ultra2 SCSI Host Adapter Expander, Termination enabled Multiconnector...

  • Page 19: Applications That Won't Work

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER 5.2 Applications That Won’t Work Here are two ways that you must avoid trying to use the 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 20: Troubleshooting

    CHAPTER 6: Troubleshooting 6. Troubleshooting 6.1 Calling Black Box If you determine that your Ultra2 SCSI LVD/HVD Multimode Expander is malfunctioning, do not attempt to alter or repair the unit. It contains no user- serviceable parts. Contact Black Box Technical Support at 724-746-5500. Before you do, make a record of the history of the problem.

  • Page 21: Appendix A: Port Pinouts

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER Appendix A: Port Pinouts The tables in this appendix show the possible pinouts of the Ultra2 SCSI LVD/ HVD Multimode Expander’s ports. The Expander’s HVD port will always have the pinout listed in Section A.1. If the Expander detects that its LVD/SE port is attached to an LVD bus, it will use the LVD pinout listed in Section A.2 for that port.
  • Page 22 APPENDIX A: Port Pinout 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 GROUND GROUND +DB(8) -DB(8) +DB(9) -DB(9) +DB(10) -DB(10) +DB(11) -DB(11)
  • Page 23 ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER A.2 Low-Voltage Differential (LVD) Pinout Signal Wire No. Wire No. Signal Name in Cable in Cable Name +DB(12) -DB(12) +DB(13) -DB(13) +DB(14) -DB(14) +DB(15) -DB(15) +DB(P1) -DB(P1) +DB(0) -DB(0) +DB(1) -DB(1) +DB(2) -DB(2) +DB(3) -DB(3) +DB(4) -DB(4) +DB(5)
  • Page 24 APPENDIX A: Port Pinout Signal Wire No. Wire No. Signal Name in Cable in Cable Name +DB(8) -DB(8) +DB(9) -DB(9) +DB(10) -DB(10) +DB(11) -DB(11)

  • Page 25: Single-Ended (Se) Pinout

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER A.3 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...
  • Page 26 CHAPTER 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 27: Appendix B: Block Diagram

    ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER 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 28 APPENDIX B: Block Diagram Figure B-1. Block diagram.
  • Page 29 ULTRA2 SCSI LVD/HVD MULTIMODE EXPANDER 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 30 NOTES...
  • Page 31 NOTES...
  • Page 32 © 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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