Product Manual
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... offset 56 9.6 Physical interface 56 9.6.1 DC cable and connector 56 9.6.2 SCSI interface physical description 58 9.6.3 SCSI interface cable requirements 58 9.6.4 Mating connectors 59 9.7 Electrical description 67 9.7.1 Multimode-SE and LVD alternatives 67 9.8 Terminator requirements 69 9.9 Terminator power 69 9.10 Disc drive SCSI timing 70 9.11 Drive activity LED 71 10.0 Seagate Technology support services 73
... offset 56 9.6 Physical interface 56 9.6.1 DC cable and connector 56 9.6.2 SCSI interface physical description 58 9.6.3 SCSI interface cable requirements 58 9.6.4 Mating connectors 59 9.7 Electrical description 67 9.7.1 Multimode-SE and LVD alternatives 67 9.8 Terminator requirements 69 9.9 Terminator power 69 9.10 Disc drive SCSI timing 70 9.11 Drive activity LED 71 10.0 Seagate Technology support services 73
Product Manual
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...operations per second (LVD 26 Locations of Figures Cheetah 18XL family drive (ST318404LC shown 1 Cheetah 18XL family drive 6 Typical ST318404 drive +12 V current profile 23 Typical ST39204 drive +12 V current profile 23 Typical ST318404 drive +5 V current profile 24 TypicalST39204 drive +5 V current profile 24 ST318404 DC current...LW model drive physical interface (68-pin J1 SCSI I/O connector 57 LC model drive physical interface (80-pin J1 SCSI I/O connector 57 SCSI daisy chain interface cabling for LW drives 60 Nonshielded 68 pin SCSI device connector used on LW drives 61 ...
...operations per second (LVD 26 Locations of Figures Cheetah 18XL family drive (ST318404LC shown 1 Cheetah 18XL family drive 6 Typical ST318404 drive +12 V current profile 23 Typical ST39204 drive +12 V current profile 23 Typical ST318404 drive +5 V current profile 24 TypicalST39204 drive +5 V current profile 24 ST318404 DC current...LW model drive physical interface (68-pin J1 SCSI I/O connector 57 LC model drive physical interface (80-pin J1 SCSI I/O connector 57 SCSI daisy chain interface cabling for LW drives 60 Nonshielded 68 pin SCSI device connector used on LW drives 61 ...
Product Manual
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...of Section 8.4. 2.1 Standards The Cheetah 18XL family complies with applicable industry and governmental regulations. Shielded I /O cables are external to the enclosure, shielded cables should be securely mounted in order to achieve optimum performance and compliance with Seagate standards as a subassembly and is... and C-Tick Marking for system integration and installation into a suitable enclosure prior to use microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse Although the test system with ...
...of Section 8.4. 2.1 Standards The Cheetah 18XL family complies with applicable industry and governmental regulations. Shielded I /O cables are external to the enclosure, shielded cables should be securely mounted in order to achieve optimum performance and compliance with Seagate standards as a subassembly and is... and C-Tick Marking for system integration and installation into a suitable enclosure prior to use microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse Although the test system with ...
Product Manual
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... power. Access to support the rates listed and no cable loss. [5] Access time = controller overhead + average seek time. During spin up to ready time the drive responds to some commands over the SCSI interface in even...excluding connect/disconnect). [2] Typical access times are given in Tables 8 and 9. 4.5 Cache operation In general, 3,600 Kbytes of drives. [3] Assumes no errors and no sector has been relocated. [4] Assumes system ability to data = controller overhead + average seek ...is less than 3 seconds after DC power has been applied. 10 Cheetah 18XL Product Manual, Rev.
... power. Access to support the rates listed and no cable loss. [5] Access time = controller overhead + average seek time. During spin up to ready time the drive responds to some commands over the SCSI interface in even...excluding connect/disconnect). [2] Typical access times are given in Tables 8 and 9. 4.5 Cache operation In general, 3,600 Kbytes of drives. [3] Assumes no errors and no sector has been relocated. [4] Assumes system ability to data = controller overhead + average seek ...is less than 3 seconds after DC power has been applied. 10 Cheetah 18XL Product Manual, Rev.
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... 8.1 for maximum current requirements. Power is performed. Spindle begins to ensure proper termination of the peripheral I/O cables. The adaptive servo calibration sequence is applied to 10 MHz. 22 Cheetah 18XL Product Manual, Rev. Daisy-chain operation requires that power be maintained on the SCSI bus terminator to accelerate...from 100 kHz to 10 MHz. +12 V = 150 mV pp from 0 to 100 kHz and 100 mV pp from DC to the drive. The drive protects against inadvertent writing during the various times is specified as shown: T0 - The current during power-up to 10 MHz. 6.2.2 Power ...
... 8.1 for maximum current requirements. Power is performed. Spindle begins to ensure proper termination of the peripheral I/O cables. The adaptive servo calibration sequence is applied to 10 MHz. 22 Cheetah 18XL Product Manual, Rev. Daisy-chain operation requires that power be maintained on the SCSI bus terminator to accelerate...from 100 kHz to 10 MHz. +12 V = 150 mV pp from 0 to 100 kHz and 100 mV pp from DC to the drive. The drive protects against inadvertent writing during the various times is specified as shown: T0 - The current during power-up to 10 MHz. 6.2.2 Power ...
Product Manual
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Cheetah 18XL Product Manual, Rev. These drives are designed to be used only on . This is usually done by installing small shorting jumpers on the pins of the drive is the only device on a ... the drive. Configure drive options For option jumper locations and definitions refer to the end of the SCSI bus cable. Follow the instructions in 512 byte sectors. • Reformat the drive if ...Seagate support services telephone numbers. • Do not remove the manufacturer's installed labels from the factory low level formatted in the system manuals for desired operation prior to the drive...
Cheetah 18XL Product Manual, Rev. These drives are designed to be used only on . This is usually done by installing small shorting jumpers on the pins of the drive is the only device on a ... the drive. Configure drive options For option jumper locations and definitions refer to the end of the SCSI bus cable. Follow the instructions in 512 byte sectors. • Reformat the drive if ...Seagate support services telephone numbers. • Do not remove the manufacturer's installed labels from the factory low level formatted in the system manuals for desired operation prior to the drive...
Product Manual
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... 5 3 1 +5V A0 A1 A2 A3 12 10 8 6 4 2 +5V [5] Ground [6] Drive Activity LED [4] Dashed area is optional host circuitry (external to the drive) connected to read SCSI ID selected. Figure 16. They are driven low (ground) for remote switching as... shown or connect a cable for 250 ms after a Reset or PWR ON to allow drive to host supplied optional usage plug. Remote Switches Pins 2, 4, 6, and 8 ... SCSI ID = 14 (default) PCB For ID selection use jumpers as shown below. Cheetah 18XL Product Manual, Rev.
... 5 3 1 +5V A0 A1 A2 A3 12 10 8 6 4 2 +5V [5] Ground [6] Drive Activity LED [4] Dashed area is optional host circuitry (external to the drive) connected to read SCSI ID selected. Figure 16. They are driven low (ground) for remote switching as... shown or connect a cable for 250 ms after a Reset or PWR ON to allow drive to host supplied optional usage plug. Remote Switches Pins 2, 4, 6, and 8 ... SCSI ID = 14 (default) PCB For ID selection use jumpers as shown below. Cheetah 18XL Product Manual, Rev.
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...are given here and in section 8.1.2. See tables 15 and 16, note 9. [3] Voltage supplied by the drive. [4] Dashed area is installed; 40 Cheetah 18XL Product Manual, Rev. Reserved Term. J2 option select header 8.1.1 Notes for figures 15, 16, and... 17. [1] Notes explaining the functions of the various jumpers on "LC" model) J2 Jumper Plug (enlarged to SFF-8009 Revision 2.0, Unitized Connector for Cabled Drives, signal assignments for the J6 connection. The drive...
...are given here and in section 8.1.2. See tables 15 and 16, note 9. [3] Voltage supplied by the drive. [4] Dashed area is installed; 40 Cheetah 18XL Product Manual, Rev. Reserved Term. J2 option select header 8.1.1 Notes for figures 15, 16, and... 17. [1] Notes explaining the functions of the various jumpers on "LC" model) J2 Jumper Plug (enlarged to SFF-8009 Revision 2.0, Unitized Connector for Cabled Drives, signal assignments for the J6 connection. The drive...
Product Manual
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...interface in low voltage differential mode or single-ended, depending on the voltage state of parity checking to the SCSI bus I/O cable. Drive spindle starts when Start Unit command received from host. Default is write protected. mentation). Default is WP jumper not installed.... TP1 (Does not apply to "LC" model) Off The drive does not supply terminator power to external terminators or to host. Cheetah 18XL Product Manual, Rev. Default is SE jumper not installed. Default setting. Off Drive checks for parity and reports result of the I /O circuits...
...interface in low voltage differential mode or single-ended, depending on the voltage state of parity checking to the SCSI bus I/O cable. Drive spindle starts when Start Unit command received from host. Default is write protected. mentation). Default is WP jumper not installed.... TP1 (Does not apply to "LC" model) Off The drive does not supply terminator power to external terminators or to host. Cheetah 18XL Product Manual, Rev. Default is SE jumper not installed. Default setting. Off Drive checks for parity and reports result of the I /O circuits...
Product Manual
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...select headers. Details of the physical, electrical and logical characteristics are given in sections following, while the SCSI operational aspects of Seagate drive interfaces are listed below, but equivalent parts may be used . G 9.5 Synchronous data transfer 9.5.1 Synchronous data transfer periods ... message protocol in the SCSI Interface Product Manual, part number 75789509. 9.6.1 DC cable and connector ST318404LW drives receive DC power through the 80-pin I /O interface. 56 Cheetah 18XL Product Manual, Rev. Recommended part numbers of the mating connector are given in...
...select headers. Details of the physical, electrical and logical characteristics are given in sections following, while the SCSI operational aspects of Seagate drive interfaces are listed below, but equivalent parts may be used . G 9.5 Synchronous data transfer 9.5.1 Synchronous data transfer periods ... message protocol in the SCSI Interface Product Manual, part number 75789509. 9.6.1 DC cable and connector ST318404LW drives receive DC power through the 80-pin I /O interface. 56 Cheetah 18XL Product Manual, Rev. Recommended part numbers of the mating connector are given in...
Product Manual
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... drive models SE ST318404LW/LC ST39204LW/LC LVD ST318404LW/LC ST39204LW/LC Maximum transfer rate Asynchronous Fast-5 yes yes yes yes Fast-10 yes yes Fast-20 yes yes Fast-40 no yes Fast-80 no daisy chain cables beyond the bulkhead connectors should be used . 58 Cheetah ...1302D revision 14, and operate compatibly at various interface transfer rates on the chain, or bus, as defined in shielding effectiveness, cable length, number of drives plugged into which other SCSI devices are common between SE and LVD operation. Implementations may be used in this is also called....
... drive models SE ST318404LW/LC ST39204LW/LC LVD ST318404LW/LC ST39204LW/LC Maximum transfer rate Asynchronous Fast-5 yes yes yes yes Fast-10 yes yes Fast-20 yes yes Fast-40 no yes Fast-80 no daisy chain cables beyond the bulkhead connectors should be used . 58 Cheetah ...1302D revision 14, and operate compatibly at various interface transfer rates on the chain, or bus, as defined in shielding effectiveness, cable length, number of drives plugged into which other SCSI devices are common between SE and LVD operation. Implementations may be used in this is also called....
Product Manual
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...30 AWG wire) Use two, 34 conductor, 50 mil center flat cable with the various Cheetah 18XL I /O connection using a cable is keyed by means of the DC power carrying conductors could become too long for LC model drives The nonshielded connector shall be used on the 80-conductor interface were... 50 (1.27 mm) mils apart (see Figure 23). ST318404LC/ST39204LC: The 80-pin connector option is a nonshielded 68 conductor connector consisting of two rows of 40 contacts with adjacent pins 50 mils apart. The drive device connector is intended for the different type connectors that plug ...
...30 AWG wire) Use two, 34 conductor, 50 mil center flat cable with the various Cheetah 18XL I /O connection using a cable is keyed by means of the DC power carrying conductors could become too long for LC model drives The nonshielded connector shall be used on the 80-conductor interface were... 50 (1.27 mm) mils apart (see Figure 23). ST318404LC/ST39204LC: The 80-pin connector option is a nonshielded 68 conductor connector consisting of two rows of 40 contacts with adjacent pins 50 mils apart. The drive device connector is intended for the different type connectors that plug ...
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...). [6] Last drive on the end with the terminator, the host having no terminator. [4] Total interface cable length must not exceed that specified in ANSI document X3T10/1302D (including host adapter/initiator). Terminators enabled. [2] Open end type (in connector Seagate P/N: 77678703 Amp...PCBA connectors Seagate P/N: 77678559 Amp US P/N: 2-557101-1 Amp Japan P/N: 5-175474-9 For additional information call Amp FAX service at 1-800-522-6752. Figure 21. G Recommended mating 80-position PCBA mount connectors: Straight-in -line application) connector used . 60 Cheetah 18XL Product ...
...). [6] Last drive on the end with the terminator, the host having no terminator. [4] Total interface cable length must not exceed that specified in ANSI document X3T10/1302D (including host adapter/initiator). Terminators enabled. [2] Open end type (in connector Seagate P/N: 77678703 Amp...PCBA connectors Seagate P/N: 77678559 Amp US P/N: 2-557101-1 Amp Japan P/N: 5-175474-9 For additional information call Amp FAX service at 1-800-522-6752. Figure 21. G Recommended mating 80-position PCBA mount connectors: Straight-in -line application) connector used . 60 Cheetah 18XL Product ...
Product Manual
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...3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Cable conductor number [2] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29...50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 Notes [ ]: See page following Table 16. Cheetah 18XL Product Manual, Rev. Signal name [1] -DB12 -DB13 -DB14 -DB15 -DBP1 -DB0 -DB1 -DB2 -DB3 -DB4 -DB5 -DB6 -DB7 ...-BSY -ACK -RST -MSG -SEL -C/D -REQ -I/O -DB8 -DB9 -DB10 -DB11 G 63 Table 13: LW 68-conductor single-ended (SE) P cable signal/pin assignments [11] Note.
...3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Cable conductor number [2] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29...50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 Notes [ ]: See page following Table 16. Cheetah 18XL Product Manual, Rev. Signal name [1] -DB12 -DB13 -DB14 -DB15 -DBP1 -DB0 -DB1 -DB2 -DB3 -DB4 -DB5 -DB6 -DB7 ...-BSY -ACK -RST -MSG -SEL -C/D -REQ -I/O -DB8 -DB9 -DB10 -DB11 G 63 Table 13: LW 68-conductor single-ended (SE) P cable signal/pin assignments [11] Note.
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... [3] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Cable conductor number [2] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32... +DB3 +DB4 +DB5 +DB6 +DB7 +DBP Ground DIFFSNS [8] TermPwr TermPwr Reserved Ground +ATN Ground +BSY +ACK +RST +MSG +SEL +C/D +REQ +I /O -DB8 -DB9 -DB10 -DB11 64 Cheetah 18XL Product Manual, Rev. A minus sign preceding a signal name indicates that signal is active low. G Table 14: LW 68-conductor LVD...
... [3] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Cable conductor number [2] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32... +DB3 +DB4 +DB5 +DB6 +DB7 +DBP Ground DIFFSNS [8] TermPwr TermPwr Reserved Ground +ATN Ground +BSY +ACK +RST +MSG +SEL +C/D +REQ +I /O -DB8 -DB9 -DB10 -DB11 64 Cheetah 18XL Product Manual, Rev. A minus sign preceding a signal name indicates that signal is active low. G Table 14: LW 68-conductor LVD...
Product Manual
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... -DB11, -DB12, -DB13, -DB14, -DB15, and -DBP1. 8 bit devices which the installation and interface cabling is selected as shown. 9.7 Electrical description Cheetah 18XL LW and LC model drives are mutually exclusive options. [7] Binary code on A3, A2, A1 and A0 asserted by LVD interface drivers shall have... and low voltage differential devices (see the ANSI SPI-3 specification X3T10/1302D). See ANSI Standard X3T10/1302D for host front panel hard drive activity indicator. [5] Asserted by host to enable Motor Start option (enables starting motor via SCSI bus command). [6] Asserted by ...
... -DB11, -DB12, -DB13, -DB14, -DB15, and -DBP1. 8 bit devices which the installation and interface cabling is selected as shown. 9.7 Electrical description Cheetah 18XL LW and LC model drives are mutually exclusive options. [7] Binary code on A3, A2, A1 and A0 asserted by LVD interface drivers shall have... and low voltage differential devices (see the ANSI SPI-3 specification X3T10/1302D). See ANSI Standard X3T10/1302D for host front panel hard drive activity indicator. [5] Asserted by host to enable Motor Start option (enables starting motor via SCSI bus command). [6] Asserted by ...
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Table 17 lists the maximum lengths allowed for single-ended circuits I /O driver and receiver circuits depends on several factors. G 69 9.7.1.1 Single-ended drivers/receivers The maximum total cable length allowed with drives using single-ended I /O transfer rate Table 17: Cable characteristics for different configurations of the stub. All device I/O lines must have equal to or less than 25 pf capacitance to ground, measured at the beginning of drive usage. These values are from the SPI-3 document. Cheetah 18XL Product Manual, Rev.
Table 17 lists the maximum lengths allowed for single-ended circuits I /O driver and receiver circuits depends on several factors. G 69 9.7.1.1 Single-ended drivers/receivers The maximum total cable length allowed with drives using single-ended I /O transfer rate Table 17: Cable characteristics for different configurations of the stub. All device I/O lines must have equal to or less than 25 pf capacitance to ground, measured at the beginning of drive usage. These values are from the SPI-3 document. Cheetah 18XL Product Manual, Rev.
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Cheetah 18XL Product Manual, Rev. G Index Symbols +5 and +12 volt supplies 21 Numerics 68... 58 bus device reset message 50 bytes per sector 48 bytes/surface 9 77 bytes/track 9 C cabinet cooling 42 cable 56 cache 10, 11, 12 cache buffer 7 cache miss 11 cache mode 10 cache operation 10 cache operation hit ...12 cache segment 11 caching write data 11 Canadian Department of Communications 3 capacities 8 capacity, drive, programmable 8 case temperature 27 CE Marking 3 Certificate number 4 change definition command 46 changeable bit 50 changeable value 50 check...
Cheetah 18XL Product Manual, Rev. G Index Symbols +5 and +12 volt supplies 21 Numerics 68... 58 bus device reset message 50 bytes per sector 48 bytes/surface 9 77 bytes/track 9 C cabinet cooling 42 cable 56 cache 10, 11, 12 cache buffer 7 cache miss 11 cache mode 10 cache operation 10 cache operation hit ...12 cache segment 11 caching write data 11 Canadian Department of Communications 3 capacities 8 capacity, drive, programmable 8 case temperature 27 CE Marking 3 Certificate number 4 change definition command 46 changeable bit 50 changeable value 50 check...
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...drive interface connector 59 drive internal 22 drive internal defects and errors 35 drive malfunction 14 drive mounting 32, 43 constraints 13 drive orientation 42 drive power 37 drive primary defects list 35 drive SCSI timing 70 drive select header 56 drive spindle 41 drive transfer 11 drive volume 37 drive warranty 15 dynamic spindle brake 7 Cheetah... time 10 extended messages 46 F fault status 13 FCC rules and regulations 3 field repair 15 firmware 50 flat ribbon cable 67 flaw reallocation 10 format 48 format command 9 format time 10 formatted 8 formatting 37 front panel 32 front panel LED...
...drive interface connector 59 drive internal 22 drive internal defects and errors 35 drive malfunction 14 drive mounting 32, 43 constraints 13 drive orientation 42 drive power 37 drive primary defects list 35 drive SCSI timing 70 drive select header 56 drive spindle 41 drive transfer 11 drive volume 37 drive warranty 15 dynamic spindle brake 7 Cheetah... time 10 extended messages 46 F fault status 13 FCC rules and regulations 3 field repair 15 firmware 50 flat ribbon cable 67 flaw reallocation 10 format 48 format command 9 format time 10 formatted 8 formatting 37 front panel 32 front panel LED...
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... 43, 59 DC power 59 host I/O signal 37 host system 37 host system malfunction 13 host/drive operational interface 13 hot plug 7, 15 humidity 27, 28 I I/O connector 58 identified defect 35 ...installation 37 installation guide 4, 8 installation instructions 37 instantaneous current peak 21 integrated Ultra1/Ultra2 SCSI controller 7 interface cable length 60 interface data 9 interface requirements 45 interface timing 13 interleave 7 internal data rate 9 J J1-auxiliary...-operating vibration 31 nonshielded 68 conductor connector 59 Cheetah 18XL Product Manual, Rev. G 79 head and disc assembly.
... 43, 59 DC power 59 host I/O signal 37 host system 37 host system malfunction 13 host/drive operational interface 13 hot plug 7, 15 humidity 27, 28 I I/O connector 58 identified defect 35 ...installation 37 installation guide 4, 8 installation instructions 37 instantaneous current peak 21 integrated Ultra1/Ultra2 SCSI controller 7 interface cable length 60 interface data 9 interface requirements 45 interface timing 13 interleave 7 internal data rate 9 J J1-auxiliary...-operating vibration 31 nonshielded 68 conductor connector 59 Cheetah 18XL Product Manual, Rev. G 79 head and disc assembly.