symbios logic SYM8751D User Manual

Pci to ultra scsi host adapter

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SYM8751D

PCI to Ultra SCSI

Host Adapter

User's Guide

Version 1.0

J10971I

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Summary of Contents for symbios logic SYM8751D

Page 1 SYM8751D PCI to Ultra SCSI Host Adapter User’s Guide Version 1.0 J10971I...
Page 2 Other trademarks referred to in this guide are the trademarks of their respective corporations. It is the policy of Symbios Logic to improve products as new technology, components, software, and ﬁrmware become available. Symbios Logic, therefore, reserves the right to change speciﬁcations without prior notice.
Page 3 Consult the dealer or an experienced radio/TV technician for help. Symbios Logic is not responsible for any radio or television interference caused by unauthorized modiﬁcation of this equipment or the substitution or attachment of connecting cables and equipment other than those speciﬁed by Symbios Logic.
Page 4 Revision Record Page No. Date Remarks 6/95 Rev 1.0 First ofﬁcial release SYM8751D User’s Guide...
Page 5 Features ..............1-1 Description ..............1-2 The PCI Interface ..........1-3 The SCSI Interface ..........1-3 Chapter 2 Installing Your SYM8751D Host Adapter Quick Installation Procedure ........2-1 Detailed Installation Procedure .........2-4 Before You Start ..........2-4 Inserting Your Host Adapter .......2-5 Connecting Your SCSI Peripherals ......2-8 SCSI Bus Termination ........
Page 6 Configuring Your Host Adapter When to Configure Your SYM8751D Host Adapter ........3-1 Requirements ............. 3-1 The Symbios Logic SCSI Configuration Utility ..3-2 Starting the SCSI Configuration Utility ....3-3 Main Menu ............3-4 Adapter Utilities Menu ........3-8 Adapter Setup Menu ..........
Page 7 Table of Contents Glossary Glossary..............Glossary-1 Index Index................Index-1 SYM8751D User’s Guide...
Page 8 Table of Contents SYM8751D User’s Guide...
Page 9 List of Figures List of Figures Chapter 2 Installing Your SYM8751D Host Adapter Figure 2-1 Hardware Connections for Your SYM8751D Host Adapter.....2-6 Figure 2-2 Inserting Your Host Adapter ....2-7 Figure 2-3 SCSI Cables .........2-8 Figure 2-4 Internal SCSI Ribbon Cable to Host Adapter Connection .....2-9...
Page 10 Figure 3-3 Change Status Menu Display....3-6 Figure 3-4 Adapter Utilities Menu Display..... 3-8 Figure 3-5 Adapter Setup Menu Display....3-9 Figure 3-6 Device Selections Menu Display ..3-11 Figure 3-7 Device Setup Menu Display ....3-12 viii SYM8751D User’s Guide...
Page 11 Table of Contents Introduction Chapter 1 Introduction Features PCI Interface SCSI Interface Board Characteristics Description The PCI Interface The SCSI Interface SYM8751D User’s Guide...
Page 12 Table of Contents Introduction SYM8751D User’s Guide...
Page 13 Serial NVRAM (Non-Volatile RAM) for user conﬁguration utility and SCAM (SCSI Conﬁgured AutoMatically) information storage Flash BIOS SCSI activity LED connector Board Characteristics PCI board dimensions, 127 x 82.55 mm (5.00 x 3.25 inches) Universal 32-bit card edge connector SYM8751D User’s Guide...
Page 14 Introduction Description Description Your Symbios Logic SYM8751D PCI to Ultra SCSI host adapter provides a SCSI-3, Ultra SCSI interface to PCI computer systems. Installing this adapter in your PCI system allows connection of SCSI devices over a SCSI bus. Your SYM8751D board is a 16-bit, differential, Ultra SCSI solution.
Page 15 I/O Processor chip. The SYM53C875 connects directly to the SCSI bus and generates timing and protocol in compliance with the SCSI standard. The SCSI interface on your SYM8751D operates as 16- bit, synchronous or asynchronous, differential, and supports Ultra SCSI protocols and 16-bit arbitration. The interface is made through connectors J2 and J3 (see Figure 2-1).
Page 16 SCSI bus TERMPWR through a blocking diode and a self re-setting 1.5 A short circuit protection device. A 80 MHz oscillator is installed on the SYM8751D to provide the clock frequency to the SYM53C875 that is necessary to support Wide Ultra SCSI transfers of up to 40 MB/sec.
Page 17 Table of Contents Installing Your SYM8751D Host Adapter Chapter 2 Installing Your SYM8751D Host Adapter Quick Installation Procedure Detailed Installation Procedure Before You Start Inserting Your Host Adapter Connecting Your SCSI Peripherals Making Internal SCSI Bus Connections Making External SCSI Bus Connections...
Page 18 Table of Contents Installing Your SYM8751D Host Adapter SYM8751D User’s Guide...
Page 19 Locate the sockets for PCI plug-in board installation. Refer to the User’s Manual for your computer to conﬁrm the location of the PCI sockets. Your SYM8751D requires a PCI slot which allows bus master operation. Remove the blank panel on the back of the computer aligned with the PCI socket you intend to use.
Page 20 Installing Your SYM8751D Host Adapter Quick Installation Procedure Remove your SYM8751D PCI to Ultra SCSI host adapter board from the packing and check that it is not damaged. Carefully insert the edge connector J1 (please see Figure 2-1) of the host adapter into the PCI socket.
Page 21 Remember: The SCSI bus requires proper termination, and no duplicate SCSI IDs. 12 Finally, refer to the Symbios Logic SDMS User’s Guide (or the guide for the software you use) to load the driver software for your particular operating system.
Page 22 Detailed Installation Procedure Detailed Installation Procedure This section provides step-by-step instructions for installing your SYM8751D host adapter board, and connecting it to your SCSI peripherals. If you are experienced in these tasks, you may prefer to use the preceding section titled Quick Installation Procedure. If you are not conﬁdent you can perform the tasks as described...
Page 23 Locate the sockets for PCI plug-in board installation. Refer to the User’s Manual for your computer to conﬁrm the location of the PCI sockets. Your SYM8751D requires a PCI slot which allows bus master operation. Remove the blank panel on the back of the computer aligned with the PCI socket you intend to use.
Page 24 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Figure 2-1 Hardware Connections for Your SYM8751D Host Adapter Plug-in Differential Terminator Connector (fits J2 or J3) 68-pin Internal High Density SCSI Interface 68-pin External SCSI Interface J1 to PCI Bus Connector...
Page 25 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Figure 2-2 Inserting Your Host Adapter The bracket around the connector J3 (see Figure 2-1) should ﬁt where the blank panel was removed, Secure it with the bracket screw (see Figure 2-2) before making the internal and external SCSI bus connections.
Page 26 Installing Your SYM8751D Host Adapter Detailed Installation Procedure SCSI bus connections to your SYM8751D host adapter Connecting Your SCSI inside your computer are made with an unshielded, 68- Peripherals conductor ribbon cable (see Figure 2-3). One side of this cable is marked with a color to indicate the pin-1 side.
Page 27 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Making Internal SCSI Bus Connections If you are connecting an internal SCSI device, plug the 68-pin connector on one end of the internal SCSI ribbon cable into the connector J2 (see Figure 2-4).
Page 28 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Plug the 68-pin connector on the other end of the internal SCSI ribbon cable into the SCSI connector on your internal SCSI device. An example of this connection is shown in Figure 2-5. Make sure to match pin-1 on all connections.
Page 29 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Figure 2-6 Connecting Additional Internal SCSI Devices Figure 2-7 Multiple Internal SCSI Devices Chained Together SYM8751D User’s Guide 2-11...
Page 30 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Most PC cabinets are designed with a front panel LED (sometimes already connected to an existing IDE drive). You may connect the LED cable to connector J4 on your host adapter, as shown in Figure 2-8.
Page 31 Making External SCSI Bus Connections If you need to connect external SCSI devices to your SYM8751D host adapter, plug the 68-pin connector on one end of a shielded external SCSI cable (see Figure 2-3) into the host adapter connector J3 (see Figure 2-1).
Page 32 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Plug the 68-pin connector on the other end of the shielded external SCSI cable into the SCSI connector on your external SCSI device. An example of this connection is shown in Figure 2-10.
Page 33 Installing Your SYM8751D Host Adapter Detailed Installation Procedure If you wish to connect more than one external SCSI device to your host adapter, you must chain them together with shielded external SCSI cables. An example of these chained connections is shown in Figure 2-11.
Page 34 All other SCSI devices on the bus must have their terminators removed or disabled. Remember that your SYM8751D Host Adapter is also on the SCSI bus — if your host adapter is ever positioned at the end of the SCSI bus, you must place the supplied differential terminator on the unused connector (J2 or J3).
Page 35 Installing Your SYM8751D Host Adapter Detailed Installation Procedure If you have made only internal SCSI device connections to your host adapter, you must terminate the last internal device on the SCSI bus. You must disable the termination on all other device(s).
Page 36 Installing Your SYM8751D Host Adapter Detailed Installation Procedure If you have made only external SCSI device connections to your host adapter, you must terminate the last external device on the SCSI bus. You must disable the termination on all other device(s).
Page 37 Installing Your SYM8751D Host Adapter Detailed Installation Procedure If you have made internal and external SCSI device connections to your host adapter, you must terminate the last internal and external devices on the SCSI bus. You must disable the termination on all other devices.
Page 38 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Each SCSI device and the host adapter must have a Setting SCSI IDs separate SCSI ID, 0 through 15. SCSI ID 7 is the preset host adapter setting, giving it the highest priority on the SCSI bus.
Page 39 Installing Your SYM8751D Host Adapter Detailed Installation Procedure Table 2-1 SCSI ID SCSI Device SCSI ID Record SYM8751D Host Adapter (default) SYM8751D User’s Guide 2-21...
Page 40 To change the conﬁguration of your host adapter, see Chapter 3, Conﬁguring Your Host Adapter. Finally, refer to the Symbios Logic SDMS User’s Guide (or the guide for the software you use) to load the driver software for your particular operating system.
Page 41 Table of Contents Conﬁguring Your Host Adapter Chapter 3 Conﬁguring Your Host Adapter When to Configure Your SYM8751D Host Adapter 3-1 Requirements The Symbios Logic SCSI Configuration Utility Starting the SCSI Configuration Utility Main Menu Adapter Utilities Menu Adapter Setup Menu...
Page 42 Table of Contents Conﬁguring Your Host Adapter SYM8751D User’s Guide...
Page 43 (for about 5 seconds) during boot that looks like this: Press Ctrl-C to start Configuration Utility Your SYM8751D host adapter is designed with NVRAM (non-volatile memory on your adapter). The conﬁguration changes described in this chapter are possible only if NVRAM is present.
Page 44 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility The Symbios Logic SCSI Conﬁguration Utility The menu driven Symbios Logic SCSI Conﬁguration Utility allows you to view and change the default conﬁguration settings for your host adapter. IMPORTANT This utility is a powerful tool. If, while using it, you somehow disable all your controllers, pressing “Ctrl-A”...
Page 45 If you decide to press “Ctrl-C” the message changes to: Please wait, invoking Configuration Utility... After a brief pause, your computer monitor displays the Main menu of the Symbios Logic SCSI Conﬁguration utility. SYM8751D User’s Guide...
Page 46 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility When you start the Symbios Logic Conﬁguration Utility, Main Menu your computer monitor displays the Main menu. This menu (see Figure 3-1) is your entry to the utility. The Main menu displays a list of up to four Symbios Logic PCI to SCSI host adapters in your system, and information about each of them.
Page 47 Allows you to set the order in which host adapters boot when you have more than one Symbios Logic host adapter in your system (otherwise this option does not appear). When this option is selected the Boot Order menu shown in Figure 3-2 is displayed.
Page 48 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility Change Adapter Status Allows you to activate or deactivate a host adapter and all SCSI devices attached to it. The change takes place after a reboot, which is automatic upon exit from the utility when this option is used to make a change.
Page 49 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility Display Mode Determines how much information about your host adapter(s) and SCSI devices is displayed on your computer monitor during boot. For more complete information, choose the verbose setting. For a faster boot, choose the terse setting.
Page 50 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility When you select a host adapter from the Main menu, Adapter Utilities Menu your computer monitor displays the screen shown in Figure 3-4. Choose Adapter Setup to view and change the selected adapter settings.
Page 51 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility When you select Adapter Setup your computer monitor Adapter Setup Menu displays the Setup menu shown in Figure 3-5.The settings in this menu are global settings that effect the selected host adapter and all SCSI devices attached to it.
Page 52 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility Parity Symbios Logic PCI to SCSI host adapters always generate parity, but some SCSI devices do not. Therefore, you are offered the option of disabling parity checking. Note: When disabling parity checking, you may have to disable disconnects for certain devices as parity checking for the reselection phase is not disabled.
Page 53 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility When you select Device Selections your computer Device Selections monitor displays the menu shown in Figure 3-6. This Menu menu provides information about individual SCSI devices attached to the selected host adapter, and the adapter itself.
Page 54 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility When you select a speciﬁc device from the Device Device Setup Menu Selections menu, your computer monitor displays the Device Setup menu shown in Figure 3-7. The settings in this menu effect individual SCSI devices attached to the selected host adapter.
Page 55 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility Width (bits) The value set with this option deﬁnes the maximum data width the host adapter attempts to negotiate. The host adapter and a SCSI device must agree to a width they can both handle. Only host adapters that can do 16 bit data transfers have this option enabled.
Page 56 Conﬁguring Your Host Adapter The Symbios Logic SCSI Conﬁguration Utility Since some changes only take effect after your system Quitting the SCSI reboots, it is important that you quit this Conﬁguration Conﬁguration Utility utility properly. You should return to the Main Menu and exit via the Quit option.
Page 57 Table of Contents Technical Speciﬁcations Appendix A Technical Speciﬁcations SYM8751D Mechanical Drawing Physical Environment Physical Characteristics Electrical Characteristics Thermal, Atmospheric Characteristics Electromagnetic Compliance Safety Characteristics Operational Environment The PCI Interface The SCSI Interface The LED Interface SYM8751D User’s Guide...
Page 58 Table of Contents Technical Speciﬁcations SYM8751D User’s Guide...
Page 59 Technical Speciﬁcations SYM8751D Mechanical Drawing SYM8751D Mechanical Drawing 127.00(REF) (5.00(REF)) SYM53C875J All dimensions are given in mm and (inches) SYM8751D User’s Guide...
Page 60 SCSI connection is made through the 68-pin high density connector J3. The J3 connector extends external to the cabinet the SYM8751D is installed in through a bracket attached to the face of the connector. The bracket is a standard ISA type with a cutout to accommodate connector J3.
Page 61 ﬂammability rating 94V0. The bare board is also marked with the supplier’s name or trademark, type, and UL ﬂammability rating. Since this board is installed in a PCI bus slot, all voltages are below the SELV 42.4V limit. SYM8751D User’s Guide...
Page 62 Technical Speciﬁcations Operational Environment Operational Environment The SYM8751D is designed for use in PCI computer systems with an ISA/EISA bracket type. The Symbios Logic SDMS (SCSI Device Management Software) operates the board, but the design of the board does not prevent the use of other software.
Page 63 GND (PRSNT1/) AD19 KEYWAY RESERVED +3.3V KEYWAY GND (PRSNT2/) AD17 AD08 KEYWAY C_BE2/ AD07 KEYWAY +3.3V RESERVED IRDY/ AD05 +3.3V AD03 DEVSEL/ AD01 REQ/ LOCK/ 3V/5V 3V/5V PERR/ ACK64/ AD31 +3.3V AD29 Note: Shaded signals are not connected. SYM8751D User’s Guide...
Page 64 RESERVED KEYWAY 3V/5V AD18 KEYWAY RESERVED AD16 C_BE0/ KEYWAY +3.3V +3.3V KEYWAY FRAME/ AD06 RESERVED AD04 RST/ TRDY/ 3V/5V AD02 GNT/ STOP/ AD00 +3.3V 3V/5V RESERVED SDONE REQ64/ AD30 SBO/ +3.3V Note: Shaded signals are not connected. SYM8751D User’s Guide...
Page 65 68-pin high density right angle receptacle that protrudes through the back panel bracket. SCSI termination is provided through a differential plug-in terminator. SCSI termination power is also supplied by the board. The following tables show the signal assignments for J2 and J3. SYM8751D User’s Guide...
Page 66 SDP1 SREQ TERMPWR SI_O TERMPWR SATN/ SD10 SBSY/ SD11 SACK/ SD12/ SRST/ SD13/ SMSG/ SD14/ SSEL/ SD15/ SC_D/ DIFFSENS SDP1/ SREQ/ TERMPWR SI_O/ TERMPWR SD0/ SD1/ SD8/ SATN SD2/ SD9/ SD3/ SD10/ SBSY SD4/ SD11/ SACK SD5/ SYM8751D User’s Guide...
Page 67 Technical Speciﬁcations Operational Environment The LED interface on the SYM8751D is a four wire The LED Interface arrangement that allows the user to connect an LED harness to the board. The GPIO0_FETCH line (maximum output low voltage 0.4V and minimum output low current 16mA) is pulled low to complete the circuit when a harness with an LED is attached.
Page 68 Technical Speciﬁcations Operational Environment A-10 SYM8751D User’s Guide...
Page 69 The host adapter controls the transfer of data directly to and from system memory without bothering the computer’s microprocessor. This is the fastest way for multitasking operating systems to transfer data. Byte A unit of information consisting of eight bits. SYM8751D User’s Guide Glossary...
Page 70 16-bit ISA bus standard. It allows devices to perform 32-bit data transfers. External SCSI Device A SCSI device installed outside the computer cabinet. These devices are connected in a continuous chain using speciﬁc types of shielded cables. Glossary-2 SYM8751D User’s Guide...
Page 71 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 16-bits at a time. SYM8751D User’s Guide Glossary-3...
Page 72 Multi-tasking The executing of more than one command at the same time. This allows programs to operate in parallel. Multi-threading The simultaneous accessing of data by more than one SCSI device. This increases the data transfer rate. Glossary-4 SYM8751D User’s Guide...
Page 73 SCSI ribbon cables are not. PIO Programmed Input/Output. A way the CPU can transfer data to and from memory via the computer’s I/O ports. PIO is faster than DMA, but requires CPU time. SYM8751D User’s Guide Glossary-5...
Page 74 CPU. Information can be written to and read from RAM. The contents of RAM are lost when the computer is turned off. RISC Core Symbios Logic SCSI chips contain a RISC (Reduced Instruction Set Computer) processor, programmed through microcode scripts.
Page 75 (as opposed to differential SCSI which uses a separate ground for each signal). STA SCSI Trade Association. A group of companies that cooperate to promote SCSI parallel interface technology as a viable mainstream I/O interconnect for commercial computing. SYM8751D User’s Guide Glossary-7...
Page 76 RAM. Wide SCSI A SCSI-2 feature allowing 16 or 32-bit transfers on the SCSI bus. This dramatically increases the transfer rate over the standard 8-bit SCSI bus. Word A two byte (or 16-bit) unit of information. Glossary-8 SYM8751D User’s Guide...
Page 77 Device Setup Menu Display 3-12 Disconnect 3-13 Document Revision Record ii Duplication of SCSI IDs 2-20 Edge connector 2-6 Electrical Characteristics A-2 Electromagnetic Compliance A-3 External SCSI Bus Connections 2-13 External SCSI Device 2-14 External SCSI Device Termination 2-18 SYM8751D User’s Guide Index...
Page 78 LED cable 2-12 LED Connector J4 A-9 LED Interface A-9 Main Menu Display 3-4 Mechanical Drawing A-1 Multiple External SCSI Devices 2-15 Multiple Internal SCSI Devices 2-11 NVRAM (non-volatile memory on your adapter) 3-1 Operational Environment A-4 Index-2 SYM8751D User’s Guide...
Page 79 SCSI ID Record 2-21 SCSI IDs 2-20 SCSI Interface 1-1, 1-3, A-7 SCSI LED Connector 2-12 SCSI Peripherals 2-8 SCSI Ribbon Cable 2-9 SDMS BIOS 3-1 Setting SCSI IDs 2-20 SYM8100ASP Mechanical Drawing A-1 Sync Rate (Mega Bytes/sec) 3-12 SYM8751D User’s Guide Index-3...
Page 80 Index Technical Speciﬁcations A-1 Termination 2-16 Thermal, Atmospheric Characteristics A-3 Ultra SCSI 1-4, 2-8 Width (bits) 3-13 Index-4 SYM8751D User’s Guide...
Page 83 SYM8751D PCI to Ultra SCSI Host Adapter User’s Guide...