Seagate ST9655 Series Product Manual
  1. Manuals
  2. Brands
  3. Seagate Manuals
  4. DC Drives
  5. ST9655 Series
  6. Product manual
Seagate ST9655 Series Product Manual

Seagate ST9655 Series Product Manual

Ata interface drives
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
ST9655 Family
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
ST9655AG, ST9550AG
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
ST9385AG
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
ATA Interface Drives
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
Product Manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .

Advertisement

Table of Contents
loading

Related Manuals for Seagate ST9655 Series

Summary of Contents for Seagate ST9655 Series

  • Page 1 ......... . ST9655 Family .
  • Page 3 ......... . ST9655 Family .
  • Page 4 Seagate , Seagate Technology and the Seagate logo are registered trademarks of Seagate Technology, Inc. Other product names are reg- istered 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...

  • Page 5: Table Of Contents

    ST9655 Family Product Manual, Rev. A Contents 1.0 Drive specifications ..... . 1 1.1 Formatted capacity ..... 1 1.2 Physical organization .
  • Page 6 ST9655 Family Product Manual, Rev. A 2.0 Drive mounting and configuration ....13 2.1 Handling and static-discharge precautions ..13 2.2 Mounting the ST9655 family drives .
  • Page 7 ST9655 Family Product Manual, Rev. A Figures Figure 1. Typical startup and operation current profile for the ST9655AG ......9 Figure 2.

  • Page 9: Drive Specifications

    ST9655 Family Product Manual, Rev. A 1.0 Drive specifications 1.1 Formatted capacity ST9655AG ST9550AG ST9385AG Guaranteed Mbytes (1 Mbyte = 10 bytes) Guaranteed sectors 1,024,128 889,248 666,876 Bytes per sector 1.2 Physical organization ST9655AG ST9550AG ST9385AG Read/Write heads Discs 1.3 Logical organization The ST9655 family drives support all head, cylinder and sector geome- tries, subject to the maximums specified below, and to the following condition:...

  • Page 10: Recording And Interface Technology

    ST9655 Family Product Manual, Rev. A 1.5 Recording and interface technology Specification ST9655AG ST9550AG ST9385AG Interface Recording method RLL (1,7) RLL (1,7) RLL (1,7) Recording density (BPI) 72,100 59,124 59,124 Flux density (FCI) 44,360 44,360 44,360 Track density (TPI) 3,227 3,282 3,282 Spindle speed (RPM ±...

  • Page 11: Start Times

    ST9655 Family Product Manual, Rev. A • Track-to-track seek time is an average of all possible single-track seeks in both directions. • Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead. •...

  • Page 12: Drive Acoustics

    ST9655 Family Product Manual, Rev. A Service life 5 years 1.10 Drive acoustics Drive acoustics are measured as sound pressure 1 meter from the drive. Mode Maximum Idle (dBA) Seek (dBA) 1.11 Environment 1.11.1 Ambient temperature Operating 5° to 55°C (41° to 131°F) Nonoperating –40°...

  • Page 13: Shock

    ST9655 Family Product Manual, Rev. A 1.11.5 Shock All shock specifications assume that the drive is mounted in an approved orientation with the input levels at the drive mounting screws. The nonoperating specifications assume that the read/write heads are posi- tioned in the shipping zone.

  • Page 14: Power Specifications

    ST9655 Family Product Manual, Rev. A 1.11.6.2 Nonoperating vibration The following table lists the maximum nonoperating vibration that a ST9655 family drive can experience without incurring physical damage or degradation in performance when the drive is operated. 5–22 Hz 0.162-inch displacement (double amplitude) 22–450 Hz 4 Gs acceleration (peak) 450–22 Hz...
  • Page 15 ST9655 Family Product Manual, Rev. A Reset or Soft Reset command from the host. After receiving a Soft Reset command, the drive exits Sleep mode and enters Standby mode with all current emulation and translation parameters intact. Rest/resume commands. Some host systems reduce drive power consumption by removing all power from the drive.

  • Page 16: Power Consumption

    ST9655 Family Product Manual, Rev. A 1.12.2 Power consumption Power requirements for the ST9655 family drives are listed in the tables below. Typical power measurements are based on an average of drives tested under nominal conditions, using 5.0V input voltage at 25°C ambient temperature at sea level.

  • Page 17: Figure 1. Typical Startup And Operation Current Profile For The St9655Ag

    ST9655 Family Product Manual, Rev. A 1.12.2.1 Typical current profiles Typical startup and operation current profiles for the ST9655 family drives are shown in Figures 1 and 2. Current (mA) 1200 Drive ready 1000 Active mode Idle Standby mode Upload code mode Sleep mode...

  • Page 18: Conducted Noise

    Federal Communications Commission verification or certification of the device is required. Seagate Technology, Inc. has tested this device in enclosures as de- scribed above to ensure that the total assembly (enclosure, disc drive, motherboard, power supply, etc.) does comply with the limits for a Class B computing device, pursuant to Subpart J, Part 15 of the FCC rules.

  • Page 19: Compatibility Notes

    ST9655 Family Product Manual, Rev. A This equipment is designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television, which can be determined by turning the equipment on and off, you are encouraged to try one or more of the following corrective measures: •...

  • Page 21: Drive Mounting And Configuration

    ST9655 Family Product Manual, Rev. A 2.0 Drive mounting and configuration 2.1 Handling and static-discharge precautions After unpacking, and prior to installation, the drive may be exposed to potential handling and ESD hazards. Observe standard static-discharge precautions. A grounded wrist-strap is preferred. Handle the drive only by the sides of the head/disc assembly.

  • Page 22: Figure 3. Mounting Dimensions For The St9655 Family Drives

    ST9655 Family Product Manual, Rev. A Dimensions are in inches (mm) 0.747 ± 0.007 (18.97 ± 0.18) 4.010 (101.85) max. (head/disc assembly) 0.118 ± 0.010 (3.00 ± 0.25) 0.000 0.152 ± 0.005 4X 3 mm × 0.5 mm (3.86 ± 0.13) ×...

  • Page 23: Master/Slave Configuration

    ST9655 Family Product Manual, Rev. A 2.3 Master/slave configuration A master/slave relationship must be established between multiple drives attached to a single AT bus. You can configure a drive to become a master or slave by setting the master/slave jumpers, as described below and shown in Figure 4 on page 16.

  • Page 24: Figure 4. Master/Slave Jumpers For The St9655 Family Drives

    Pin 20 removed for keying Circuit board Drive is master; slave may be detected using DASP– signal Drive is master; Seagate slave drive present Drive is slave; Seagate master drive present Use CSEL pin grounding to differentiate master from slave...

  • Page 25: Ata Interface

    Sleep mode. You can connect up to two drives on a single AT host bus. For detailed information regarding Seagate’s implementation of the ATA interface, see the Seagate ATA Interface Reference Manual, pub- lication number 36111-001 . 3.1 ATA interface connector The 44-pin drive connector has 2 rows of 22 pins on 0.079-inch (2 mm)

  • Page 26: Ata Interface Signals And Connector Pins

    3.2 ATA interface signals and connector pins The following diagram summarizes the signals on the ATA interface connector that are supported by the ST9655 family drives. For a detailed description of these signals, refer to the Seagate ATA Interface Refer- ence Manual. Drive pin #...

  • Page 27: At Bus Signal Levels

    ST9655 Family Product Manual, Rev. A 3.2.1 AT bus signal levels Signals that the drive sends have the following output characteristics, as measured at the drive connector: Logic low 0.0V to 0.4V Logic high 2.5V to 5.25V Signals that the drive receives must have the following input charac- teristics, as measured at the drive connector: Logic low 0.0V to 0.8V...

  • Page 28: Ata Interface Commands

    3.3 ATA interface commands The following table lists ATA-standard and Seagate-specific drive com- mands that are supported by the ST9655 family drives. For a detailed description of these commands, refer to the Seagate ATA Interface Reference Manual. Command Supported by...
  • Page 29 Check Power Mode or E5 Idle or E3 Idle Immediate or E1 Sleep or E6 Standby or E2 Standby Immediate or E0 Seagate-specific power-management commands Active and Set Idle Timer Active Immediate Check Idle Mode Idle Immediate Idle and Set Idle Timer...

  • Page 30: Identify Drive Command

    ST9655 Family Product Manual, Rev. A The following commands are specific to the ST9655 family drives or contain drive-specific features. 3.3.1 Identify Drive command The Identify Drive command (command code EC ) transfers information about the drive to the host following power up. The data is organized as a single 512-byte block of data, whose contents are shown in the table below.
  • Page 31 ST9655 Family Product Manual, Rev. A Word Description ST9655AG ST9550AG ST9385AG Controller type = dual- port multisector buffer 0003 0003 0003 with caching Buffer size (number of 00F0 00F0 00F0 512-byte sectors) Number of ECC bytes 0010 0010 0010 available Firmware revision (8 ASCII character string): xx.ss.tt...
  • Page 32 Minimum PIO cycle time without IORDY flow 016B 016B 016B control (363 nsec) Minimum PIO cycle time with IORDY flow control 00B4 00FA 00FA (nsec) 64–127 ATA reserved 0000 0000 0000 xxxx xxxx xxxx 128–159 Seagate reserved 160–255 ATA reserved 0000 0000 0000...
  • Page 33 ST9655 Family Product Manual, Rev. A * DMA mode settings are reflected in the following bit settings for words 62 and 63. Only one mode at a time should be set as currently active. Word Description (if bit is set to 1) Single-word DMA mode 0 available Single-word DMA mode 1 available Single-word DMA mode 2 available...

  • Page 34: Set Features Command

    ST9655 Family Product Manual, Rev. A 3.3.2 Set Features command This command controls the implementation of various drive features. When the drive receives this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an interrupt. If the value in the register does not represent a feature supported by the drive, the command is aborted.

  • Page 35: Rest/Resume Commands

    ST9655 Family Product Manual, Rev. A 3.3.3 Rest/Resume commands Some host systems reduce overall power consumption by temporarily removing power from the disc drive. The Rest/Resume process allows drive-state information to be saved to disc before powering down the drive. After power is restored, the drive-state information is retrieved and used to return the drive to its prerest condition.
  • Page 36 ST9655 Family Product Manual, Rev. A Bit settings for the Rest command: Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Command (1F7 Cyl. High (1F5 Cyl. Low (1F4 Drv. Head (1F6 Sec. Num. (1F3 Sec.
  • Page 37 ST9655 Family Product Manual, Rev. A 3.3.3.2 Read Drive State command (E9 The Read Drive State command allows the host system to save certain drive parameters to nonvolatile system memory before shutting down power to the drive. The host should only issue this command following a successful Rest command.
  • Page 38 ST9655 Family Product Manual, Rev. A 3.3.3.3 Restore Drive State command (EA This command allows the host system to restore the drive to the state it was in at the time of the power-down in Rest mode. If the host has previously caused a Rest mode, it must ensure that the first command issued to the drive (after the drive powers up and is ready to accept commands) is not one that will interfere with the intended resume...
  • Page 40 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, California 95066, USA Publication Number: 36270-001, Rev. A, Printed in USA...

This manual is also suitable for:

St9655agSt9550agSt9385ag

Table of Contents