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Seagate ST11200N Product Manual

Hawk 1 family
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Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D
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Hawk 1 Family
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ST11200N/ND/NC
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ST1980N/ND/NC
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ST1830N, ST1950N
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Product Manual
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Summary of Contents for Seagate ST11200N

  • Page 1 ........ST11200N/ND/NC ........
  • Page 2 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________...
  • Page 3 ........ST11200N/ND/NC ........
  • Page 4 Inc. Other product names are registered trademarks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No part of this publication may be reproduced in any form without written permission of Seagate Technology, Inc.
  • Page 5 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Revision status summary sheet Revision Authority Date Writer/Eng. Sheets Affected A Issue 1/12/93 D. Ashby 1 through 72 B. Norman PLD: 83287 3/12/93 D. Ashby 1 through 70. B.

  • Page 6: Table Of Contents

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Table of contents Scope ............................. 1 Applicable standards and reference documentation ............2 Standards ........................2 Applicable reference documents .................. 3 General description ......................... 4 Standards features ........................6 Performance .........................
  • Page 7 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Table of contents Heat/power dissipation ....................24 Environmental limits ..................... 25 7.4.1 Temperature ..................... 25 7.4.2 Relative humidity ..................... 27 7.4.3 Effective altitude (sea level ref) ................ 27 7.4.4 Shock and vibration ..................
  • Page 8 Front panel ........................69 12.2 Single unit shipping pack ....................69 12.3 Drive termination ......................69 13.0 Accessories ..........................70 13.1 Front panel kit ....................... 70 13.2 Installation manual ......................70 14.0 Technical support services ....................71 Seagate Peripheral Family ........................72...

  • Page 9: Scope

    Interface (SCSI) and are classified as “Intelligent” peripherals. The Model Hawk 1 Family is function- ally compatible to a subset of the Seagate SCSI-2 Interface Specification 77738479, and the ANSI SCSI-2 standard. The Hawk 1 Family also provides Level 2 conformance (highest level) with the ANSI SCSI-1 standard.

  • Page 10: Applicable Standards And Reference Documentation

    Standards The Hawk 1 Family complies with Seagate standards as noted in the appropriate sections of this specifica- tion and the Seagate SCSI-2 Interface Specification, P/N 77738479 (Vol. 2, Version 2). The Hawk 1 Family is a UL Recognized component per UL 1950 and a CSA Certified component per CAN/ CSA-C22.2 No.

  • Page 11: Applicable Reference Documents

    ANSI Small Computer System Interface (SCSI): Document Number ANSI3.131-1986 (X3T9/84.40 Rev. 1B) (X3T9.2/82-2 Rev. 17B) and X3T9.2/86-109 Revision 10C (SCSI-2). Package Test Specification: Seagate P/N 30190-001 (under 100 lb) Package Test Specification: Seagate P/N 30191-001 (over 100 lb.) In case of conflict between this document and any referenced document, this document shall take prece-...

  • Page 12: General Description

    Hawk 1 N/ND Family of drives, and the SCSI-2 Interface Product Manual P/N 77738479 (Vol. 2, Version 2) which describes the general interface characteristics of this and other families of Seagate 3.5-inch drives. The drive interface supports multiple initiators, disconnect/reconnect, self configuring host software and automatic features that relieve the host from the necessity of knowing the physical characteristics of the target (logical block addressing is used).
  • Page 13 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ N/ND Family PCB NC Family PCB Figure 3.0-1. Hawk 1 family drive...

  • Page 14: Standards Features

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Standard features The Hawk 1 Family has the following standard features: Integrated SCSI Controller Single Ended and Differential SCSI drivers and receivers Asynchronous and Synchronous data transfer protocol Firmware downloadable via SCSI interface Selectable sector size from 256 to 4096 bytes/sector Programmable sector reallocation scheme...

  • Page 15: Unformatted And Formatted Capacities

    Command and Format Command in the SCSI Interface Product Manual P/N 77738479. **Spare cylinders are on the inner tracks. The standard OEM model is as follows: Formatted Data Block Size Unformatted 512 Byte/Sector ST11200N/ND/NC 1054 MB* 1248 MB ST1980N/ND 860 MB** 1021 MB...

  • Page 16: Installation

    If the drive is the only device on the bus, attach it to the end of the SCSI bus cable. Terminators are required either on the drive for ST11200N and ST11200NC family models, or external to the drive for ST11200ND family models. These external terminators must be provided by the user, systems integrator or host equipment manufacturer.

  • Page 17: Performance Characteristics

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Performance characteristics Internal drive characteristics (transparent to user) ST11200 ST1980 ST1950 ST1830 Drive Capacity 1248 1021 MByte (UNF) Read/Write Heads Data (Max) Bytes/Track 41660 45434 46550 48419 Bytes (Avg) Bytes/Surface 78.5 Mbytes (UNF)

  • Page 18: Format Drive Command Execution Time

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 5.2.2 Format drive command execution time (minutes) [1] ST11200 ST1980 ST1950 ST1830 Maximum (with verify) 30 min 28 min Maximum (no verify) 20 min 18 min * [ ] All notes are listed in Section 5.3.1. ** With disconnect enabled and Read Look Ahead cache disabled.
  • Page 19 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ continued from previous page ST11200 ST1980 ST1950 ST1830 Min. [4]* 2.90 3.05 MByte/sec Avg. 4.14 4.21 Max. 5.07 5.07 Data Buffer To/From Disc Media Data Transfer Rate (< 1 Track) - 512 Byte Sector ST11200 Min.
  • Page 20 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 5.3.1 Notes for sections 5.2 and 5.3. [1] Execution time measured from receipt of the last Byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to the Initiator (excluding latency and data transfer). [2] Maximum times are specified over the worst case conditions of temperature, voltage margins and drive orientation.

  • Page 21: Start/Stop Time

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Start/stop time After DC power has been applied, the drive becomes ready within 20 seconds (17 seconds typical) if the Motor Start Option is disabled (i.e. the motor starts as soon as the power has been applied). During this time the drive will transfer commands over the SCSI interface but may take up to 3 seconds to respond back to the host.

  • Page 22: Prefetch Operation

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ The following is a simplified description of a read operation with cache operation enabled: Case A - A Read command is received and the first logical block (LB) is already in cache: Drive transfers to the initiator the first LB requested plus all subsequent contiguous LB’s that are already in the cache.

  • Page 23: Caching Write Data

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ The operation of the prefetch feature (when enabled by DRA = 0) can be modified to an adaptable prefetch mode, wherein prefetch is disabled as long as two sequential read operations are not for contiguous blocks of data.
  • Page 24 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Each drive can be configured for the non-synchronized mode in which it ignores any reference signal that might be present. The connection of the synchronized reference signal to the host is required only if the host is to provide the reference signal.
  • Page 25 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ The servo/read-write LSI on the master drive provides the reference signal (REFIND+). It is a 90.18 Hz crystal generated signal. The signal is normally false/negated (nominal 0 V) and makes a transition to the true/asserted (nominal +5 V) level to indicate the reference position during the revolution period.
  • Page 26 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ The drive may be operated with a rotational skew when synchronized. The rotational skew is applied in the retarded direction (lagging the synchronized spindle master control). A rotational offset of up to 255/256 of a revolution lagging may be selected.

  • Page 27: Reliability Specifications

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Reliability specifications The following reliability specifications assume correct host/drive operational interface, including all interface timings, power supply voltages, and environmental requirements. Less than 1 in 10 7 seeks Seek Errors Read Error Rates [1] Less than 1 sector in 10 14 bits transferred...

  • Page 28: Write Errors

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 6.1.3 Write errors Write errors can occur as a result of media defects, environmental interference, or equipment malfunction. Therefore, write errors are not predictable as a function of the number of bits passed. If an unrecoverable write error occurs because of an equipment malfunction in the drive, the error is classi- fied as a failure affecting MTBF.

  • Page 29: Service Philosophy

    6.2.7 Product Warranty Beginning on the date of shipment to customer and continuing for a period of five years, Seagate warrants that each product (including components and sub-assemblies) or spare part that fails to function properly under normal use due to defect in materials or workmanship or due to non conformance to the applicable specifications will be repaired or replaced, at Seagate’s option and at no charge to customer, if returned by...

  • Page 30: Physical/Electrical Specifications

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Physical/electrical specifications AC power requirements: None DC Power requirements The voltage and current requirements for a single drive are shown in the following table. Values indicated apply at the drive power connector. Table 7.2-1.

  • Page 31: Conducted Noise Immunity

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 7.2.1 Conducted noise immunity Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak to peak measurements and apply at the drive power connector.

  • Page 32: Heat/Power Dissipation

    2 s .5 Amps CH2 GND Seconds Figure 7.2.2-1. Typical ST11200N/ND/NC family drive +5 V and +12 V current profile Heat/power dissipation For drives with single ended interface circuits, typical operating power dissipation is 11 watts (37.5 BTUs per hour) of DC power average at nominal voltages. Typical power dissipation under idle conditions is 9 watts (30.8 BTUs per hour).

  • Page 33: Environmental Limits

    Non-Operating -40° to 158°F (-40° to 70°C) package ambient with a maximum gradient of 45°F (25°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with the drive.
  • Page 34 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Single Ended I/O PCB * Differential I/O PCB * U2Ø U2Ø * Bottom side of PCB Notes: "NC" models have an 80 pin I/O connector (50 pin connecctor is shown) and does not have VR1.

  • Page 35: Relative Humidity

    The drive packaged in a single or multiple drive pack of gross weight 20 pounds (8.95 kg) or less by Seagate for general freight shipment shall withstand drop test from heights listed below against a con- crete floor or equivalent. For additional details refer to specifications 30190-001 (under 100 lbs) or 30191-001 (over 100 lbs).
  • Page 36 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Figure 7.4.4-1. Recommended mounting...

  • Page 37: Air Cleanliness

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 7.4.4.2 Vibration a. Operating The drive, as installed for normal operation, shall operate error free while subjected to continuous vibration not exceeding 5-22 Hz @ 0.040 inches (1.03 mm) displacement peak-to-peak 22-400 Hz @ 1.0 g Vibration may be applied in the X, Y, or Z axis.

  • Page 38: Mechanical Specifications

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Mechanical specifications The following nominal dimensions are exclusive of the decorative front panel accessory. Refer to Figure 7.6-1 for detailed mounting configuration dimensions. Height: 1.62 in 41.1 Width: 4.00 in 101.6 Depth:...
  • Page 39 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Notes: Drive Centerline Mounting holes three on each side, 6-32 UNC. Max screw length into side of drive 0.15 in. (3.81 mm). Screw tightening torque 8.0 in-lb max with minimum thread engagement of .12 in (3.00 mm).

  • Page 40: Drive Orientation

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 7.6.1 Drive Orientation The balanced rotary arm actuator design of the drive allows it to be mounted in any orientation. All drive performance characterization, however, has been done with the drive in horizontal (discs level) and vertical (drive on its side) orientations, and these are the two preferred mounting orientations.

  • Page 41: Media Characteristics

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Media characteristics Media description The media used on the drive has a diameter of approximately 95 mm (approximately 3.7 inches). The aluminum substrate is coated with a thin film magnetic material and overcoated with a proprietary protective layer for improved durability and environmental protection.

  • Page 42: Defect And Error Management

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Defect and error management The drive, as delivered, complies with this specification. The read error rate and specified storage capacity are not dependent upon use of defect management routines by the host (initiator). Defect and error management in the SCSI system involves the drive internal defect/error management and SCSI systems error considerations (errors in communications between Initiator and the drive).

  • Page 43: Option/Configuration Headers

    PCB part number label here Term. Power Sync to SCSI Bus Spindle REFIND+ Term. Power Remote from SCSI Bus Position A CATH Figure 10.1-1a. ST11200N/ND family drive ID and option select header for early drives having PCB P/N’s 75782395 and 75782485.
  • Page 44 LED signals. Do not use J2 and J6 for these five functions if the host uses the ones included in the 80 pin connector. See Table 11.6.3-1c for a list of pin numbers vs. signals for the 80 pin connector. Figure 10.1-1b. ST11200N/ND/NC family drive ID and option select header for new PCB’s...
  • Page 45 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Notes for Figure 10.1-1: [1] Notes explaining the functions of the various jumpers on jumper header connectors J2, J5 and J6 are given below in left to right order of jumper position. The term “default” means as standard OEM units are configured when shipped from factory.
  • Page 46 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ continued from previous page Jumper Installation Jumper Function Description 1, 2, 3 Drive ID on SCSI Bus (J6 may be used instead). The drive ID is binary coded position- *(A 2 ,A 1 ,A 0 ) wise i.e., jumper in position A 2 is drive ID 4, in position A 1 is ID 2, position A 0 is ID 1 and **(A 0 ,A 1 ,A 2 )

  • Page 47: Synchronized Spindles Interface

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 10.2 Synchronized spindles interface The Synchronized Spindles Interface (SSI) allows several drives operating from the same host to operate their spindles at a synchronized rotational rate. Details of the electrical and physical interfaces follow in paragraphs 10.2.1 and 10.2.1.2 and 10.2.1.3.

  • Page 48: Grounding

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 10.2.1.2 Termination The reference index signal (REFIND+) is terminated with a 7.5 K ohm resistor. Each drive has a termination resistor located on the Main PCB. The terminator resistor is not removable and is always in the circuit. 10.2.1.3 Physical interface The dimensions of the connector (J6) mounted on the Main PCB to interconnect the drives is shown in...

  • Page 49: Interface Requirement

    This section partially describes the interface requirements as implemented on the drives. The major portion of the interface requirements/implementation is described in the Seagate SCSI Interface Product Manual, P/N 77738479. This section has tables that give the Hawk 1 Family drives version of the SCSI implementa- tion described in the 77738479 document.

  • Page 50: Scsi Interface Commands Supported

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 11.3 SCSI interface commands supported Table 11.3-1 following lists the SCSI interface commands that are supported in the SCSI-1 and SCSI-2 modes of the drive. Hawk 1 Family drives can be changed back and forth between SCSI-1 and SCSI-2 modes using the Change Definition Command.
  • Page 51 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ continued from previous page Com’d Supported by: Code SCSI-1 SCSI-2 Command Name Start unit/stop unit Receive diagnostic results Send diagnostics page Supported diagnostics pages Translate page Read capacity Read extended Write extended Seek extended...

  • Page 52: Inquiry Data

    Eight ASCII digits representing the eight digits of the product serial number. Four ASCII digits representing the firmware distribution diskette serial number. Bytes 18 through 24 will reflect model of drive. Shown here are hex values for ST11200N. Codes for ST1980N drive are 31, 39, 38, 30, 4E.

  • Page 53: Mode Sense Data

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 11.3.2 Mode sense data The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages for SCSI-1 and SCSI-2 implementation (see SCSI Interface Product Manual, P/N 77738479). DEFINITIONS: Default value.
  • Page 54 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Table 11.3.2-2. Mode sense data, ST11200 default values (SCSI-2 implementation) Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode Sense 9F 00 00 08 Data...
  • Page 55 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Table 11.3.2-3. Mode sense data, ST1980 default values (SCSI-1 implementation) Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode Sense 63 00 00 08 Data...
  • Page 56 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Table 11.3.2-4. Mode sense data, ST1980 default values (SCSI-2 implementation) Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode Sense 9F 00 00 08 Data...
  • Page 57 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Table 11.3.2-5. Mode sense data, ST1950 default values (SCSI-2 implementation) Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode Sense 9F 00 00 08 Data...
  • Page 58 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Table 11.3.2-6. Mode sense data, ST1950 default values (SCSI-1 implementation) Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode Sense 63 00 00 08 Data...
  • Page 59 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Table 11.3.2-7. Mode sense data, ST1830 default values (SCSI-2 implementation) Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode Sense 9F 00 00 08 Data...
  • Page 60 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Table 11.3.2-7. Mode sense data, ST1830 default values (SCSI-1 implementation) Bytes 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Mode Sense 63 00 00 08 Data...

  • Page 61: Scsi Bus Conditions And Miscellaneous Features Supported

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 11.4 SCSI Bus Conditions and Miscellaneous Features Supported Asynchronous SCSI bus conditions supported by the drive are listed in Table 11.4-1. These conditions cause the SCSI device to perform certain actions and can alter the phase sequence. Other miscellaneous operating features supported are also listed here.

  • Page 62: Synchronous Data Transfer

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 11.5 Synchronous data transfer 11.5.1 Synchronous data transfer periods supported Table 11.5-1 and 11.5-2 list Synchronous Data transfer periods supported by the drive. The data transfer period to be used by the drive and the initiator is established by an exchange of messages during the Message Phase of operation.

  • Page 63: Physical Interface

    SCSI I/O signals, DC power and some option select functions all together in the 80 pin connector. See Figure 11.6.3-1b and Table 11.6.3-1c. Details of the physical, electrical and logical characteristics are given in paragraphs following, while the SCSI operational aspects of Seagate drive interfaces are given in the Seagate SCSI Interface Product Manual, P/N 77738479. Power...

  • Page 64: Dc Cable And Connector

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 11.6.1 DC cable and connector The drive receives DC power through a 4 pin connector mounted at the rear of the main PCB (see Figure 11.6-1). Recommended part numbers of the mating connector are listed below, but equivalent parts may be used (see Table 11.6-1).

  • Page 65: Connector Requirements

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 11.6.2.2.3 General cable characteristics In general, cables having the characteristic impedance’s given in 11.6.2.2.1 and 11.6.2.2.2 are not avail- able; however, impedance’s that are somewhat lower are satisfactory. A characteristic impedance of 100 ohm +10% is recommended for unshielded flat or twisted pair ribbon cable.
  • Page 66 50 mils (1.27 mm) apart. The connector is keyed by its shape. The characteristics of the drive's PCB mounted connector are shown in Figure 11.6.3-1b. Recommended mating flat cable connector part numbers are: Seagate P/N: 77678558 Amp P/N:...
  • Page 67 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 57.87 (2.278) –0.15 + .000 – .006 0.15 –Y– Front View Pin 1* 62.15 ± 0.15 (2.447) (± .005) 0.15 Housing View 1.27 (.05) Contact 0.50 (.020) C L of Datum Y (.012) Pin 1 Back...
  • Page 68 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ SCSI Device Host Adapter/Initiator * * * 1 thru 8 SCSI Devices Disc Drive or Disc Drive or Disc Drive or Other SCSI Other SCSI Other SCSI Device Device Device View B...
  • Page 69 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ Table 11.6.3-1b. Differential cable pin assignments (Nonshielded connector) +SIGNAL NAME* NUMBER -SIGNAL NAME* SHIELD GND GROUND +DB(0) -DB(0) +DB(1) -DB(1) +DB(2) -DB(2) +DB(3) -DB(3) +DB(4) -DB(4) +DB(5) -DB(5) +DB(6) -DB(6) +DB(7)
  • Page 70 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Table 11.6.3-1c. Single ended 80 pin cable pin assignments (Non-shielded connector) Signal Pin number Signal Pin number +12 V Ground +12 V Ground +12 V Ground +12 V Ground Ground Ground...

  • Page 71: Electrical Description

    11.6.4.1 Single ended drivers/receivers Typical single ended driver and receiver circuits for the ST11200N/NC is shown in Figure 11.6.4-1. Termina- tor circuits shown (Note [1]) are needed only when the disc drive is first or last in the daisychain. Note.
  • Page 72 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 11.6.4.2 Differential drivers/receivers Typical differential driver and receiver circuits used by the model ST11200ND are shown in Figure 11.6.4-2. The drive has no provisions for terminator circuits on differential I/O drives. Differential signals All differential interface signals consist of two lines denoted +SIGNAL and -SIGNAL.
  • Page 73 See section 11.6.4.2 for signal characteristics. [4] I/O Line terminators. If SCSI device is a Seagate disc drive, terminators and a place to plug them in must be provided external to the drive by user or systems integrator where needed. The drive has no terminators and there are no provisions on the drive for terminator installation.
  • Page 74 (see Figure 10.1-1) does not disconnect the terminator resistors from the circuit. For the Single-ended I/O ST11200N/NC applications, the SCSI bus MUST be terminated at both ends with ANSI SCSI-2 Standard’s Alternative 2 termination (active termination), especially if the bus will be operated at FAST SCSI transfer rates.

  • Page 75: Disc Drive Timing

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 11.7 Disc drive SCSI timing Table 11.7-1. Disc drive SCSI timing Waveform Waveform Description Symbol [1] Table [1] Typical Target Select Time (no Arbitration) <1 us <250 us Target Select Time (with Arbitration) 4.5-1,2 2.34 us...
  • Page 76 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ continued from previous page Waveform Waveform Description Symbol [1] Table [1] Typical Max. Asynchronous Data Transfer Characteristics: (continued) Next CDB Byte Access (Byte 2 of 10) T23.10.2 4.5-4 0.46 us 0.50 us Next CDB Byte Access (Byte 3 of 10)

  • Page 77: Options

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ 12.0 Options All options are incorporated or packaged at the manufacturing facility. 12.1 Front panel The normal front panel available is black plastic. Other panel colors may be special ordered. Each panel has a single rectangular green LED indicator lens which, when glowing, indicates the drive is selected.

  • Page 78: Accessories

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ 13.0 Accessories All accessories are designed for implementation by the customer. 13.1 Front panel kit Same as 12.1 but includes all mounting hardware to support field installation. 13.2 Installation manual This manual (P/N 77738480) provides basic information on the care and handling of Winchester disc pe- ripherals in general.

  • Page 79: Technical Support Services

    8:00 AM to 5:00 PM PST, Monday through Friday. SeaBOARD: The Seagate Technical Support Bulletin Board System (BBS) is available 24 hours a day, 7 days a week. A modem is required to access this service. (300–9600 baud, 8-N-1). This is a toll call.

  • Page 80: Seagate Peripheral Family

    Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Seagate Peripheral Family Listed below are some of the SEAGATE Peripheral family members. For specific information on each member, refer to the appropriate documents. Model Model Product Unformatted...
  • Page 81 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________ continued from previous page Model Model Product Unformatted Name Number Manual Interface Capacity WREN 3 ST4182E 77738212 ESDI 101, 141 or 182 Family ST4182N 77738270 SCSI 101, 141 or 182 WREN 3 HH ST2106N 77765250...
  • Page 82 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________...
  • Page 83 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D _____________________________________________________________________________________...
  • Page 84 Product Manual - Hawk 1 Family SCSI-2 (Volume 1), Rev. D ______________________________________________________________________________________ Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 77738476, Rev. D (6/94) Printed in USA...

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