R PCI-SC896 2Ch.
User’s Notice No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
ASUS Contact Information ASUSTeK COMPUTER INC. (Asia-Pacific) Marketing Address: Telephone: Fax: Email: 150 Li-Te Road, Peitou, Taipei, Taiwan 112 +886-2-2894-3447 +886-2-2894-3449 info@asus.com.tw Technical Support MB/Other (tel): Notebook (tel): Server (tel): Fax: Email: Newsgroup: WWW: FTP: English: +886-2-2890-7121 English: +886-2-2890-7122 English: +886-2-2890-7123 +886-2-2895-9254 tsd@asus.com.tw news2.asus.com.tw www.asus.com.tw ftp.asus.com.
FCC & DOC Compliance Federal Communications Commission Statement This device complies with FCC Rules Part 15. Operation is subject to the following two conditions: • • This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
Contents User’s Notice ................................................................................ 2 ASUS Contact Information ........................................................... 3 FCC & DOC Compliance ............................................................. 4 Preface ......................................................................................... 7 Organization ............................................................................ 7 Conventions Used in This Manual ..........
Contents 2.3 SCSI Bus Termination .......................................................... 18 2.3.1 Internal SCSI Connections ........................................... 19 2.3.2 External SCSI Connections ......................................... 19 2.3.3 Internal and External SCSI Connections ..................... 19 2.3.4 Setting SCSI IDs .......................................................... 20 2.4 Setting Interrupts .................................................................. 20 3.
1. Introduction 1. Introduction Preface This is the primary reference and User’s Manual for the ASUS PCI-SC896 Dual Channel PCI to Ultra2 SCSI Host Adapter. It contains a complete functional description for the PCI-SC896 and includes complete physical and electrical specifications for the PCI-SC896.
1. Introduction 1. Introduction Conventions Used in This Manual The following is a list of notational conventions used throughout this manual: Notation Example Meaning and Use courier typeface .nwk file Names of commands, files, signals, symbols, pins, parts, directories, modules, and macrocells are shown in Courier typeface. bold typeface fd1sp In a command line, keywords are shown in bold, non-italic typeface. Enter them exactly as shown.
1. Introduction 1. Introduction 1. Introduction This chapter describes how the ASUS PCI-SC896 Host Adapter interfaces to PCI computer systems and includes these topics: • Section 1.1, “General Description” • Section 1.2, “Features” • Section 1.3, “Interface Descriptions” 1.1 General Description ASUS PCI-SC896 Dual Channel PCI to Ultra2 SCSI host adapter board provides two SCSI-3, Ultra2 SCSI interfaces to PCI computer systems that require BIOS support on the add-in SCSI adapter.
1. Introduction 1. Introduction 1.2 Features This section provides a high level overview of the PCI Interface, the SCSI Interface, and Board Characteristics for the PCI-SC896 Host Adapter board. 1.2.1 PCI Interface • Full 32-bit or 64-bit (33 MHz) DMA bus master • Zero wait-state bus master data bursts • PCI Universal 3.3 V/5 V bus support 1.2.
1. Introduction 1. Introduction 1.3 Interface Descriptions This section provides a more detailed explanation about the PCI Interface, the SCSI Interface, the SCSI Activity LED Interface, and Wide Ultra2 SCSI. 1.3.1 The PCI Interface PCI is a high-speed standard local bus for interfacing a number of I/O components to a PC processor and memory subsystem. The PCI functionality for the PCI-SC896 is contained within the ASUS PCI-SC896 PCI-SCSI I/O Processor chip.
1. Introduction 1. Introduction 1.3.4 Wide Ultra2 SCSI The PCI-SC896 has full support for Wide Ultra2 SCSI. This interface is an extension of the SCSI-3 family of standards that expands the bandwidth of the SCSI bus to allow faster synchronous data transfers, up to 80 Mbytes/s. Wide Ultra2 SCSI provides a doubling of the data rate over the Ultra2 SCSI interface, while it increases cable lengths and allows a larger number of devices on the cable than Ultra2 SCSI interfaces.
2. Installation 2. Installing the PCI-SC896 Host Adapter • Section 2.1, “Quick Installation Procedure” • Section 2.2, “Detailed Installation Procedure” • Section 2.3, “SCSI Bus Termination” • Section 2.4, “Setting Interrupts” • Section 2.5, “Completing Your Installation” 2. Installation This chapter provides instructions on how to install the PCI-SC896 Host Adapter and includes these topics: 2.
2. Installation 5. Carefully insert the edge connector J1 of the host adapter into the PCI slot. Make sure the edge connector is properly engaged before pressing the board into place. NOTE: You may notice that the components on a PCI host adapter face the opposite way from those on other non-PCI plug-in boards you have in your system. This is correct, and the board is keyed to go in only one way. 2. Installation 6. The bracket around the connector J2 should fit where the blank panel was removed.
2. Installation 2.2 Detailed Installation Procedure 2. Installation This section provides step-by-step instructions for installing your PCI-SC896 host adapter and connecting it to your SCSI peripherals. If you are experienced in these tasks, you may prefer to use the preceding Section 2.1, “Quick Installation Procedure.” If you are not confident that you can perform the tasks as described here, ASUS suggests getting assistance. 2.2.
2. Installation 2.2.2 Inserting Your Host Adapter For safe and proper installation, check the user’s manual supplied with your computer and perform the following steps: 1. Ground yourself before removing this host adapter board. Remove the PCI-SC896 Dual Channel PCI to Ultra2 SCSI Host Adapter board from the packing and check that it is not damaged. 2. Installation 2. Switch off and unplug power cords for all components in your system. 3. Remove the cabinet cover on your computer to access the PCI slots.
2. Installation 2.2.3 Connecting Your SCSI Peripherals All internal SCSI bus connections to the PCI-SC896 host adapter are made with an unshielded, 68-conductor ribbon cable. One side of this cable is marked with a color to indicate the pin-1 side. The connectors on this cable are keyed to ensure proper pin-1 connection. Use Ultra/Ultra2 rated cables for these bus speeds. 2. Installation All external SCSI bus connections to the PCI-SC896 host adapter are made with shielded, 68-conductor cables.
2. Installation 2.2.5 Making External SCSI Bus Connections This section provides step-by-step instructions about making external SCSI bus connections: 1. If you need to connect external SCSI devices to the PCI-SC896 host adapter, plug the 68-pin high-density connector on one end of a shielded external high density cable into the host adapter connector J2. 2. Installation 2. Plug the 68-pin connector on the other end of the shielded external SCSI cable into the SCSI connector on your external SCSI device.
2. Installation The PCI-SC896 automatically controls SCSI bus termination for three different bus configurations, depending on the use of connectors. The three bus configurations are: • Only for internal SCSI connections, • Only for external SCSI connections, and • Connections to both internal and external SCSI connectors. 2. Installation 2.3.1 Internal SCSI Connections If only internal SCSI device connections on your host adapter have been made, then terminate the last internal device on the SCSI bus.
2. Installation 2.3.4 Setting SCSI IDs 2. Installation You must set each SCSI device and the host adapter to a separate SCSI ID, 0 through 15 for a 16-bit SCSI. SCSI ID 7 is the preset host adapter setting, giving it the highest priority on the SCSI bus. If you plan to boot your computer from a hard disk drive on the SCSI bus, that drive should have SCSI ID 0, or the lowest SCSI ID on the bus.
2. Installation 3. Configuring the Host Adapter This chapter discusses how to change configuration settings and • Section 3.1, “When to Configure the PCI-SC896 Host Adapter” • Section 3.2, “Starting the SCSI BIOS Configuration Utility” • Section 3.3, “Exiting the SCSI BIOS Configuration Utility” 2. Installation includes these topics: 3.1 When to Configure the PCI-SC896 In most cases you should not need to change the default configuration of your host adapter.
3. Configuring Device Default Settings Settings for Individual SCSI Devices Default Settings Synchronous Transfer Rate (MB/Sec) 40 or 80 Data Width 16 Disconnect On Read/Write I/O Time-Out (secs) 10 Scan for Devices at Boot Time Yes Scan for SCSI LUNs Yes Queue Tags Enabled 3. Configuring 3.2 Starting the SCSI BIOS Utility If you have SCSI BIOS version 4.0, and it includes the ASUS SCSI BIOS Configuration Utility, you can change the default configuration of your SCSI host adapters.
3. Configuring Not all devices detected by the Configuration utility can be controlled by the BIOS. Devices such as tape drives and scanners require that a device driver specific to that peripheral be loaded. This device driver is provided by the devices manufacturer. 3.2.1 Configuration Utility Main Menu When you start the ASUS SCSI BIOS Configuration Utility, the Main Menu appears. This menu displays a list of up to four ASUS PCI to SCSI host adapters in your system and information about each of them.
3. Configuring 3.2.1.3 Additional Adapter Configuration The additional adapter configuration allows you to configure an adapter that is not assigned a boot order. When this option is selected, the Adapter Configuration menu appears: Highlight the adapter to be configured and press Enter. The message “Resetting Adapter, Please wait” appears, and then the system scans for devices. Finally, the Utilities Menu appears and lists the available options, which are described below. 3.2.1.
3. Configuring 3.2.2 Utilities Menu When you select a host adapter on the Main menu, the Utilities menu appears. Choose Adapter Setup to view and change the selected adapter settings. Choose Device Selections to view and change settings for the devices attached to the selected adapter. You are returned to this menu after making changes to the configuration of any host adapter or connected SCSI device. Before you exit this menu, you are prompted to save or cancel any changes. 3.2.2.
3. Configuring NOTE: This scan order option may conflict with operating systems that automatically assign a drive order. Removable Media Support – This option defines the removable media support for a specific drive. When this option is selected, a window appears with three choices: • None • Boot Drive Only • With Media Installed None – indicates there is no removable media support whether the drive is selected in BBS as being first, or first in scan order in non-BBS.
3. Configuring 3.2.3 Device Selections Menu When you select the Device Selections option, the corresponding menu appears. The settings in this menu affect individual SCSI devices attached to the selected host adapter. Changes made from this menu do not cause the system to reboot upon exit from the SCSI BIOS Configuration Utility. To change a value, select the required device by using the arrow keys and press Enter. A new menu appears providing the options and utilities available.
3. Configuring Queue Tags – This option allows you to enable or disable the issuing of queue tags during I/O requests when your device driver can do this. Format Device – If enabled, this option allows you to low-level format a magnetic disk drive. Low-level formatting will completely and irreversibly erase all data on the drive. Note that this utility will only format 512 byte sectors. For other sector sizes, do not use this utility.
4. Appendix 4. Glossary of Terms and Abbreviations Address - A specific location in memory, designated either numerically or by a symbolic name. Asynchronous Data Transfer - A method of transmission which does not require a common clock, but separates fields of data by stop and start bits. It is slower than synchronous data transfer. BIOS - Basic Input/Output System. Software that provides basic read/write capability. Usually kept as firmware (ROM based).
4. Appendix DMA Bus Master - A feature that allows a peripheral to control the flow of data to and from system memory by blocks, as opposed to PIO (Programmed I/O) where the processor is in control and the flow is by byte. Device Driver - A program that allows a microprocessor (through the operating system) to direct the operation of a peripheral device. Differential - A hardware configuration for connecting SCSI devices.
4. Appendix IRQ - Interrupt Request Channel. A path through which a device can get the immediate attention of the computer’s CPU. The PCI bus assigns an IRQ path for each SCSI host adapter. ISA - Industry Standard Architecture. A type of computer bus used in most PC’s. It allows devices to send and receive data up to 16-bits at a time. Kbyte - Kilobyte. A measure of computer storage equal to 1024 bytes. Local Bus - A way to connect peripherals directly to computer memory.
4. Appendix Parity Checking - A way to verify the accuracy of data transmitted over the SCSI bus. One bit in the transfer is used to make the sum of all the 1 bits either odd or even (for odd or even parity). If the sum is not correct, an error message appears. PCI - Peripheral Component Interconnect. A local bus specification that allows connection of peripherals directly to computer memory. It bypasses the slower ISA and EISA busses.
4. Appendix SCSI-2 - The current SCSI specification which adds features the original SCSI1 standard. SCSI-3 - The next SCSI specification, which adds features to the SCSI-2 standard. Although this version is still in development, parts of the SCSI-3 standard are already in use. SCSI Bus - A host adapter and one or more SCSI peripherals connected by cables in a linear chain configuration. The host adapter may exist anywhere on the chain, allowing connection of both internal and external SCSI devices.
4. Appendix Ultra SCSI - A standard for SCSI data transfers. It allows a transfer rate of up to 20 Mbytes/s over an 8-bit SCSI bus and up to 40 Mbytes/s over a 16-bit SCSI bus. STA (SCSI Trade Association) supports using the term “Ultra SCSI” over the term “Fast-20”. Ultra2 SCSI - A standard for SCSI data transfers. It allows a transfer rate of up to 40 Mbytes/s over an 8-bit SCSI bus, and up to 80 Mbytes/s over a 16-bit SCSI bus.
