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Symbios™ SYM22801
Dual Channel PCI to Ultra
SCSI Host Adapter

S14017

User’s Guide

Version 2.0

Содержание Symbios SYM22801

Страница 1: ... Symbios SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter S14017 User s Guide Version 2 0 ...

Страница 2: ...Federal Communications Commission FCC Declaration of Conformity ...

Страница 3: ...e changes to any products herein at any time without notice LSI Logic does not assume any responsibility or liability arising out of the application or use of any product described herein except as expressly agreed to in writing by LSI Logic nor does the purchase or use of a product from LSI Logic convey a license under any patent rights copyrights trademark rights or any other of the intellectual...

Страница 4: ...iv ...

Страница 5: ...Procedure 2 1 2 2 Detailed Installation Procedure 2 3 2 2 1 Before You Start 2 3 2 2 2 Inserting the Host Adapter 2 4 2 2 3 Connecting the SCSI Peripherals 2 6 2 2 4 Making Internal SCSI Bus Connections 2 8 2 2 5 Making External SCSI Bus Connections 2 15 2 3 SCSI Bus Termination 2 18 2 3 1 Internal SCSI Connections 2 19 2 3 2 External SCSI Connections 2 20 2 3 3 Internal and External SCSI Connecti...

Страница 6: ...stics A 2 A 2 1 Thermal Atmospheric Characteristics A 3 A 2 2 Electromagnetic Compliance A 3 A 2 3 Safety Characteristics A 3 A 3 Operational Environment A 3 A 3 1 The PCI Interface A 3 A 3 2 The SCSI Interface A 6 A 3 3 The LED Interface A 9 Appendix B Glossary of Terms and Abbreviations Index Customer Feedback Figures 2 1 Hardware Connections for the SYM22801 Host Adapter 2 5 2 2 Inserting the H...

Страница 7: ...al SCSI Device Termination 2 20 2 15 External SCSI Device Termination 2 21 2 16 Internal and External SCSI Device Termination 2 22 2 17 Internal and Internal SCSI Device Termination 2 23 2 18 Termination Override Switch Settings for U1 and U2 2 25 A 1 SYM22801 Mechanical Drawing A 2 Tables 2 1 SCSI ID Record 2 26 2 2 Setting Interrupts 2 27 3 1 Global Default Settings 3 1 3 2 Device Default Settin...

Страница 8: ...viii Contents ...

Страница 9: ...uating the processor for possible use in a system Engineers who are designing the processor into a system Organization This document has the following chapters and appendixes Chapter 1 Using the SYM22801 Host Adapter defines the interfaces and characteristics of the SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter Board Chapter 2 Installing the SYM22801 Host Adapter provides both quick and det...

Страница 10: ...sary of Terms and Abbreviations provides definitions of various terminology that is referenced throughout this user s guide Related Publications PCI SCSI Device Management System SDMS 4 0 User s Guide Document No DB15 000099 01 ...

Страница 11: ...l SYM22801 board provides 16 bit Single Ended SE SCSI solutions for your computer using only one PCI slot This board supports legacy Fast SCSI devices and the newest Ultra SCSI devices It is also backwards compatible with the existing SYM8751SP host adapter but with a different external connector Symbios SCSI Device Management System SDMS software operates the board but the design of the board doe...

Страница 12: ...s per channel 68 pin VHDCI external 68 pin right angle high density internal with jack blocks 50 pin vertical low density internal Fast and Ultra SCSI data transfer capability SCSI TERMPWR source with autoresetting circuit breaker and TERMPWR shorted LED SCAM SCSI Configured AutoMatically off in BIOS version 4 09 and later Flash EEPROM for BIOS storage Serial NVRAM Non Volatile Random Access Memor...

Страница 13: ...The SCSI functionality for the SYM22801 is contained within the Symbios SYM53C876 PCI Ultra SCSI I O Processor chip The SYM53C876 connects directly to the two SCSI buses and generates timing and protocol in compliance with the SCSI standard The SCSI interfaces on the SYM22801 operates as 16 bit synchronous or asynchronous single ended bus and support Ultra SCSI protocols and 16 bit arbitration Eac...

Страница 14: ...to the SYM53C876 that is necessary to support Wide Ultra SCSI transfers of up to 40 Mbytes s 1 3 3 Ultra SCSI The SYM22801 has full support for Ultra SCSI as well as supporting Fast SCSI simultaneously Ultra SCSI is an extension of the SCSI 3 family of standards that expands the bandwidth of the SCSI bus allowing faster synchronous data transfers Special SCSI cables are specified for operation wit...

Страница 15: ... computer user with prior host adapter installation and SCSI bus setup experience If you prefer more detailed guidance in installing the SYM22801 host adapter please follow the instructions in Section 2 2 Detailed Installation Procedure For safe and proper installation check the user s manual supplied with your computer and perform the following steps Step 1 Ground yourself before removing this ho...

Страница 16: ... a PCI host adapter face the opposite way from those on other non PCI adapter boards you have in your system This is correct and the board is keyed to go in only one way Step 7 The bracket around the connectors J3 and J7 see Figure 2 1 should fit where the blank panel was removed Secure the bracket with the bracket screw before making the internal and external SCSI bus connections Step 8 If you ar...

Страница 17: ...step by step instructions for installing the SYM22801 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 LSI Logic suggests getting assistance 2 2 1 Before You Start Before you start look through the task l...

Страница 18: ...that it is not damaged An example of this host adapter board is shown in Figure 2 1 Step 2 Switch off and unplug power cords for all components in your system Step 3 Remove the cabinet cover on your computer to access the PCI slots Caution Ground yourself by touching a metal surface before removing the cabinet cover Static charges on your body can damage electronic components Handle plug in boards...

Страница 19: ...e that the components on a PCI host adapter face the opposite way from those on other non PCI adapter boards you have in your system This is correct and the board is keyed to go in only one way Channel B LED Connecto J9 Channel B 68 pin Internal High Density SCSI Interface J6 Channel A LED Connector J5 Channel A 68 pin Internal High Density SCSI Interface J2 Channel A 68 pin External VHDCI SCSI In...

Страница 20: ...e Figure 2 2 before making the internal and external SCSI bus connections 2 2 3 Connecting the SCSI Peripherals SCSI bus connections to the SYM22801 host adapter inside the computer are made with an unshielded 68 or 50 conductor ribbon cable see Figure 2 3 One side of this cable is marked with a color to indicate the pin 1 side Sometimes the connectors on this cable are keyed to ensure proper pin ...

Страница 21: ...ed SCSI bus only if they are at least 3m apart on a 6 meter cable For Ultra SCSI you can connect up to eight devices including the host adapter board on a single ended Ultra SCSI bus only if they are evenly spaced on a 1 5 meter Ultra SCSI cable 0 19m between devices You can connect up to four devices if they are evenly spaced on a 3 meter Ultra SCSI cable 0 75m between devices Your single ended S...

Страница 22: ...e of the bus you will incur improper termination since the switches are not assigned on that bus correctly Refer to the Channel Switches section for more information 2 2 4 Making Internal SCSI Bus Connections This section provides step by step instructions about making internal SCSI bus connections Step 1 If you are connecting an internal Wide SCSI device plug the 68 pin connector on one end of a ...

Страница 23: ... Ribbon Cable to Host Adapter Connection Step 2 To connect an 8 bit internal SCSI device plug the 50 pin connector on one end of an 8 conductor internal SCSI ribbon cable into the connector J4 or J8 see Figure 2 5 Make certain to match pin 1 on both connectors J6 J2 ...

Страница 24: ...Host Adapter Connection Step 3 Plug the 68 or 50 pin connector on the other end of the internal SCSI ribbon cable into the SCSI connector on the internal SCSI device An example of this connection is shown in Figure 2 6 You must match pin 1 on all connections Channel A J4 Channel B J8 ...

Страница 25: ...nnection Step 4 Additional internal SCSI devices are plugged in by using an internal SCSI ribbon cable with the required number of connectors attached along its length as shown in Figure 2 7 An example of this type of chained connection is shown in Figure 2 8 Make sure to match pin 1 on all connections ...

Страница 26: ...2 12 Installing the SYM22801 Host Adapter Figure 2 7 Connecting Additional Internal SCSI Devices ...

Страница 27: ...ure 2 8 Multiple Internal SCSI Devices Chained Together Step 5 It is also possible to use both internal connectors on a channel if you do not attach any external devices to that channel An example of this configuration is shown in Figure 2 9 ...

Страница 28: ...be used Step 6 Most PC cabinets are designed with a front panel LED sometimes already connected to an existing IDE drive You may connect this LED cable to the host adapter as shown in Figure 2 10 This causes the front panel LED to indicate activity on the SCSI bus This connector is not keyed The orientation of the LED cable does not matter as long as all four pins are connected ...

Страница 29: ...9 See Table A 5 for pin descriptions 2 2 5 Making External SCSI Bus Connections This section provides step by step instructions about making internal SCSI bus connections Step 1 To connect external SCSI devices to the SYM22801 host adapter plug the 68 pin connector on one end of a shielded external SCSI VHDCI cable see Figure 2 3 into the host adapter connector J3 or J7 see Figure 2 1 This connect...

Страница 30: ...ter Figure 2 11 External Cable to Host Adapter Step 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 An example of this connection is shown in Figure 2 12 ...

Страница 31: ... 2 12 External Cable to External SCSI Device Step 3 To connect more than one external SCSI device to the host adapter you must chain them together with shielded external SCSI cables An example of these chained connections is shown in Figure 2 13 ...

Страница 32: ... chained together with SCSI cables The first and last physical SCSI devices connected on the ends of the SCSI bus must have a set of resistors called terminators All other SCSI devices on the bus must have their terminators removed or disabled Remember The SYM22801 host adapter is also on the SCSI bus its termination is automatically enabled when it is connected to the end of the bus ...

Страница 33: ...bbon cable or pin 50 of an internal or external 68 conductor SCSI cable If you use an adapter to connect 8 bit devices externally with a 50 conductor SCSI cable the ground signal is detected on pin 34 The SYM22801 automatically covers SCSI bus termination for five different bus configurations depending on the use of the connectors on the SYM22801 host adapter see Figure 2 1 The five bus configurat...

Страница 34: ... 3 2 External SCSI Connections If only external SCSI device connections to the host adapter have been made you must terminate the last external device on the SCSI bus You must disable the termination on all other devices Termination on the host adapter is automatically enabled in this case Figure 2 15 shows an example of how termination is determined for this SCSI bus configuration ...

Страница 35: ...inate the last internal and external devices on the SCSI bus You must disable the termination on all other devices Termination on the host adapter is automatically disabled in this case Figure 2 16 shows an example of how termination is determined for this SCSI bus configuration Last D evice on C hain Term ination Enabled D oes N ot End C hain Term ination D isabled H ost Adapter Autom atically Te...

Страница 36: ... internal devices on each end of the SCSI bus You must disable the termination on all other devices Termination on the host adapter is automatically disabled in this case Caution Remember you must not use the external connector for a channel if you use both internal connectors for that channel Last Device on Chain Term ination Enabled H ost Adapter Term ination Autom atically Disabled Last Device ...

Страница 37: ...ther SYM22801 host adapter or any connection to a device that uses the same sensing method for automatic termination as your SYM22801 you must properly set the termination override switches U1 or U2 see Figure 2 1 2 3 4 1 Channel Switches When connecting another SYM22801 you must turn on the switch for the connector used on one or both of the boards Please refer to Figure 2 18 and the next two par...

Страница 38: ...pin connector switch two simulates a device on the internal 68 pin connector switch three forces the upper SCSI line terminator to stay on and switch four simulates a device on the external 68 pin connector When SYM22801 is in the middle of a bus using only one connector then switch Int68 and Ext68 switches 2 and 4 for that bus are on This forces the terminators for that bus to be disabled ...

Страница 39: ...signed NO 1 2 3 4 N O Simulates a device on the Internal 50 pin connector Use this switch only when a device is connected to the internal 50 pin connector that does not ground pin 22 like another LSI Logic host adapter 1 INT50 1 2 3 4 NO Simulates a device on the Internal 68 pin connector Use this switch only when a device is connected to the internal 68 pin connector that does not ground pin 50 l...

Страница 40: ... You must have no duplication of SCSI IDs on a SCSI bus Step 1 Determine the SCSI ID of each device on the SCSI bus Note any duplications and if 8 bit SCSI devices are to be used the host adapter ID must not be set above 7 Step 2 Make any necessary changes to the SCSI IDs and record the IDs for future reference The following table is provided as a place to keep this record Table 2 1 SCSI ID Record...

Страница 41: ...g two separate interrupts However if your system does not support two separate interrupts jumper TP9 see Figure A 1 is provided to change the interrupt routing The following table explains the jumper settings Table 2 2 Setting Interrupts Jumper Setting Condition Jumper Out default INTB is routed to INTB on the PCI bus Jumper In INTB is rerouted at power up to INTA on the PCI bus ...

Страница 42: ... boot up Step 4 To change the configuration of your host adapter see Chapter 3 Configuring the Host Adapter Step 5 Finally refer to the PCI SCSI Device Management System SDMS 4 0 User s Guide or the guide for the software you plan to use to load the driver software for your particular operating system Verify Installation Procedures Done Host adapter connection in PCI bus slot secure Internal SCSI ...

Страница 43: ...ould not need to change the default configuration of your host adapter You may decide to alter these default values if there is a conflict between device settings or if you need to optimize system performance The following tables list the configuration settings you can change The global settings affect your host adapter and all SCSI devices which are connected to it The device settings affect only...

Страница 44: ... Ctrl C to start Symbios Configuration Utility This message remains on your screen for about five seconds giving you time to start the utility If you decide to press Ctrl C the message changes to Please wait invoking Symbios Configuration Utility After a brief pause your computer monitor displays the Main Menu of the Symbios SCSI BIOS Configuration Utility NVRAM Non Volatile Random Access Memory i...

Страница 45: ...n Utility the Main Menu appears This menu displays a list of up to four Symbios PCI to SCSI host adapters in your system and information about each of them The SYM22801 host adapter appears on the menu as two SYM53C875 entries one for each channel To select an adapter use only the arrow keys and enter key Then you can view and or change the current settings for that adapter and the SCSI devices at...

Страница 46: ...om the utility Here is an example of the Change Status on Next Boot Menu To change an adapter s status select it and press Enter Press the Escape Esc key to exit from this menu 3 2 1 2 Adapter Boot Order The adapter boot order allows the user to set the order in which host adapters will boot when you have more than one LSI Logic host adapter in your system When this option is selected the Boot Ord...

Страница 47: ... the Adapter Configuration menu appears Here is an example of the Adapter Configuration Menu 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 4 Display Mode The Display Mode option determines how much inform...

Страница 48: ... 3 2 1 9 Esc The Esc option allows exiting from all the screens except the Main Menu 3 2 2 Utilities Menu When you select a host adapter on the Main menu the Utilities menu appears as shown below 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 af...

Страница 49: ...off in adapter BIOS versions 4 09 and later for the SYM53C876 device The user may choose to turn this on only if the system drivers do not require SCAM off Note that if this BIOS is flashed onto a board with existing settings then these settings will not be changed to reflect the new BIOS defaults Go into the Configuration Utility to change these settings Parity The Symbios PCI to SCSI host adapte...

Страница 50: ... SCSI bus from low to high 0 to max SCSI ID or from high to low max to 0 SCSI ID If there is more than one device on the SCSI bus changing the scan order changes the order in which drive letters are assigned by the system Drive order may be reassigned differently in systems supporting the BIOS Boot Specification BBS See the PCI SCSI Device Management System SDMS 4 0 User s Guide Chapter 2 SCSI BIO...

Страница 51: ...e Selections Menu section below for further details regarding this option Use the FDISK MBR command at the C prompt where MBR represents master boot record Important Reformatting the disk or using FDISK MBR erases all partitioning and data that exists Be careful that you target the correct disk when using either the Format utility or the FDISK MBR command After clearing the partitions and data it ...

Страница 52: ...s and press Enter A new menu appears providing the options and utilities available For example you could select the Sync Rate option to change the Sync Rate value of the chosen device Device Selections 0 7 Sync Data Disc Time Scan Queue Initial Rate Width Out Bus LUNS Tags Boot 0 Dev0 N A 40 16 On 10 Yes Yes On No 1 Dev1 N A 40 16 On 10 Yes Yes On No 2 Dev2 N A 40 16 On 10 Yes Yes On No 3 Dev3 N A...

Страница 53: ...to a rate they can both handle Width bits This option defines the maximum SCSI data width the host adapter will attempt 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 SYM53C875 Inside device Sync Rate Width Disconnect Read Write I O Timeout Scan for Device at Boot Time Scan for...

Страница 54: ...want to be available to the system Also on a bus with only a few devices attached you can speed up boot time by changing this setting to No for all unused SCSI IDs Scan for SCSI Logical Units LUNs Set this option to No if problems arise with a device that responds to all LUNs whether they are occupied or not For example if a SCSI device with multiple LUNs is present on your system but you do not w...

Страница 55: ...t settings Select this option to restore all manufacturing defaults for the specified adapter Note that all user customized options will be lost upon saving after restoring default setup Exit this menu This option allows the user to leave the Device Selections Menu and return to the previous screen 3 3 Exiting the SCSI BIOS Configuration Utility Since some changes only take effect after the system...

Страница 56: ...3 14 Configuring the Host Adapter ...

Страница 57: ...ns of the SYM22801 host adapter board are 7 50 x 3 80 PCI connection is made through the edge connector J1 Internal 16 bit SCSI connection is made through the 68 pin high density connectors J2 or J6 Internal 8 bit SCSI connection is made through the 50 pin low density connectors J4 or J8 External SCSI connection is made through the 68 pin VHDCI connectors J3 or J7 The J3 and J7 connectors extend t...

Страница 58: ...t of 4 A is sustained no longer than 30 seconds before the self resetting TERMPWR short circuit protection device opens The PCI PRSNT1 and PRSNT2 pins are set to indicate a 15 W maximum configuration SYM53C876 NVRAM FLASH EEPROM TP9 TERMPWR Fail LED TERMPWR Fail LED U2 J2 J6 J4 J8 J3 J7 J1 J9 J5 U1 96 52 REF 3 80 R EF 190 50 REF 7 50 REF NVRAM 5 V DC 5 1 5 A Over the operating range 0 55 C 12 V 0 ...

Страница 59: ...requirements of UL flammability rating 94 V0 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 4 V limit A 3 Operational Environment The SYM22801 is designed for use in PCI computer systems with an ISA EISA bracket type The Symbios SDMS SCSI Device Management System ...

Страница 60: ...gnal Name Pin Signal Name Pin 12 V 1 GND 22 3 3 V 43 TCK 2 AD27 23 C_BE1 44 GND 3 AD25 24 AD14 45 TDO 4 3 3 V 25 GND 46 5 V 5 C_BE3 26 AD12 47 5 V 6 AD23 27 AD10 48 INTB 7 GND 28 GND 49 INTD 8 AD21 29 KEYWAY 50 GND PRSNT1 9 AD19 30 KEYWAY 51 RESERVED 10 3 3 V 31 AD08 52 GND PRSNT2 11 AD17 32 AD07 53 KEYWAY 12 C_BE2 33 3 3 V 54 KEYWAY 13 GND 34 AD05 55 RESERVED 14 IRDY 35 AD03 56 GND 15 3 3 V 36 GN...

Страница 61: ...13 46 5 V 5 IDSEL 26 AD11 47 INTA 6 3 3 V 27 GND 48 INTC 7 AD22 28 AD09 49 5 V 8 AD20 29 KEYWAY 50 RESERVED 9 GND 30 KEYWAY 51 3 V 5 V 10 AD18 31 C_BE0 52 RESERVED 11 AD16 32 3 3 V 53 KEYWAY 12 3 3 V 33 AD06 54 KEYWAY 13 FRAME 34 AD04 55 RESERVED 14 GND 35 GND 56 RST 15 TRDY 36 AD02 57 3 V 5 V 16 GND 37 AD00 58 GNT 17 STOP 38 3 V 5 V 59 GND 18 3 3 V 39 REQ64 60 RESERVED 19 SDONE 40 5 V 61 AD30 20 ...

Страница 62: ...nternal connections Connectors J3 and J7 are 68 pin VHDCI right angle receptacles that protrude through the back panel bracket Connectors J4 and J8 are 50 pin low density vertical shrouded headers used for internal SCSI connections Note Up to two and only two connections are allowed on each channel Connecting to all three connectors on a channel will result in an unreliable configuration Active si...

Страница 63: ...device by sensing SCSI standard GND on this pin 50 GND 5 GND 28 TERMPWR 51 GND 6 GND 29 TERMPWR 52 GND 7 GND 30 N C 53 GND 8 GND 31 GND 54 GND 9 GND 32 SATN 55 GND 10 GND 33 GND 56 GND 11 GND J2 J6 GND 16CBLSNS J3 J7 34 SBSY 57 GND 12 SD12 35 SACK 58 GND 13 SD13 36 SRST 59 GND 14 SD14 37 SMSG 60 GND 15 SD15 38 SSEL 61 GND 16 SDP1 39 SC_D 62 TERMPWR 17 SD0 40 SREQ 63 TERMPWR 18 SD1 41 SI_O 64 N C 1...

Страница 64: ... GND 15 SD7 16 GND 17 SDP 18 GND 19 GND 20 GND 21 CPRSNT_C 1 1 CPRSNT_C is used to sense the connection of a standard SCSI device by sensing SCSI standard GND on this pin 22 N C 23 N C 24 N C 25 TERMPWR 26 N C 27 N C 28 GND 29 GND 30 GND 31 SATN 32 GND 33 GND 34 GND 35 SBSY 36 GND 37 SACK 38 GND 39 SRST 40 GND 41 SMSG 42 GND 43 SSEL 44 GND 45 SC_D 46 GND 47 SREQ 48 GND 49 SI_O 50 ...

Страница 65: ...e user to connect an LED harness to the board The GPIO0_FETCH line maximum output low voltage 0 4 V and minimum output low current 16 mA is pulled low to complete the circuit when a harness with an LED is attached The connectors on the SYM22801 are J5 and J9 Table A 5 LED Connectors J5 J9 Signal Name Pin LED 1 LED 2 LED 3 LED 4 ...

Страница 66: ...A 10 Technical Specifications ...

Страница 67: ... of information a computer uses The value of a bit 0 or 1 represents a two way choice such as on or off true or false and so on Bus A collection of unbroken signal lines across which information is transmitted from one part of a computer system to another Connections to the bus are made via taps on the lines Bus Mastering A high performance way to transfer data The host adapter controls the transf...

Страница 68: ...rdware configuration for connecting SCSI devices It uses a pair of lines for each signal transfer as opposed to single ended SCSI which references each SCSI signal to a common ground Dword A double word is a group of 4 consecutive bytes or characters that are stored addressed transmitted and operated on as a unit The lower two address bits of the least significant byte must equal zero in order to ...

Страница 69: ...st 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 It bypasses the slower ISA and EISA busses PCI is a local bus standard Logical Unit A subdivision either logical o...

Страница 70: ...s 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 Peripheral Devices A piece of hardware such as a video monitor disk drive printer or CD ROM u...

Страница 71: ... that lets the host adapter modify a transfer data pointer so that a single host adapter transfer can access many segments of memory This minimizes interrupts and transfer overhead SCSI Small Computer System Interface A specification for a high performance peripheral bus and command set The original standard is referred to as SCSI 1 SCSI 2 The current SCSI specification which adds features the ori...

Страница 72: ...xed frequency pulses This is faster than asynchronous data transfer Synchronous data transfers are negotiated between the SCSI host adapter and each SCSI device System BIOS Controls the low level POST Power On Self Test and basic operation of the CPU and computer system Termination The electrical connection required at each end of the SCSI bus composed of a set of resisters It improves the integri...

Страница 73: ...apters 3 2 channel switches incurring improper termination 2 8 settings 2 23 check list verifying installation procedure 2 28 choosing the mono color setting 3 5 completing the SYM22801 installation 2 28 configuring the host adapter 3 1 3 13 connecting the SCSI peripherals 2 6 connectors high density 1 3 A 1 A 6 LED interface A 9 low density 1 3 A 1 A 6 D description 1 3 detailed installation proc...

Страница 74: ...nel switch switch 2 2 24 internal SCSI bus connections making 2 8 2 15 interrupts setting 2 27 J jumper setting interrupts 2 27 setting peripheral device SCSI IDs 2 26 L language option main menu 3 6 LED cable 2 14 LED connectors J5 J9 A 9 LED Interface A 9 low density connectors 50 pin 1 3 A 1 A 6 low voltage GPIO0_FETCH line A 9 M main menu adapter boot order option 3 4 additional adapter config...

Страница 75: ... support 1 1 board characteristics 1 2 channel switches 1 4 2 23 configuring 3 13 description 1 3 dimensions A 1 electrical characteristics A 2 electromagnetic compliance A 3 features 1 2 installing 2 28 LED interface A 9 NVRAM 3 2 PCI interface 1 3 safety characteristics A 3 SCSI bus termination 2 18 SCSI interface 1 3 SDMS software 1 1 A 3 setting interrupts 2 27 shielded cable connectors 2 7 su...

Страница 76: ...IX 4 Index utilities menu adapter setup option 3 7 3 9 device selections option 3 10 3 13 example 3 6 exiting 3 6 V verbose setting 3 5 verify option 3 13 VHDCI connectors 68 pin 1 3 2 15 A 1 ...

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