Seagate Medalist 1270 Product Manual
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Seagate Medalist 1270 Product Manual

Seagate Medalist 1270 Product Manual

Ata interface drive
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Medalist 1270
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ATA Interface Drive
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Product Manual
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Summary of Contents for Seagate Medalist 1270

  • Page 1 ..Medalist 1270 ........
  • Page 3 ..Medalist 1270 ........
  • Page 4 Publication Number: 36316-001, Rev. A, August 1995 Seagate, Seagate Technology and the Seagate logo are registered trademarks of Seagate Technology, Inc. Medalist is a trademark of Seagate Technology, Inc. Other product names are trademarks or regis- tered trademarks of their owners.

  • Page 5: Table Of Contents

    Medalist 1270 Product Manual, August 1995 Contents Introduction ......1 Quick specification chart ..... . 2 1.0 Specifications .
  • Page 6 Medalist 1270 Product Manual, August 1995 1.17 Agency listings ..... . . 14 1.18 FCC verification ..... . 14 2.0 Configuring and mounting the drive .
  • Page 7 Medalist 1270 Product Manual, August 1995 Figures Figure 1. Typical startup current profile ....9 Figure 2. ATA interface connector ....18 Figure 3.

  • Page 9: Introduction

    Introduction This manual describes the functional, mechanical and interface specifi- cations for the Medalist 1270 hard disc drive. The Medalist 1270 is referred to throughout this manual by its model number, ST31270A. The ST31270A is a 1.2-Gbyte drive that features Fast ATA-2 perform- ance, technology to smooth data flow and power management.

  • Page 10: Quick Specification Chart

    Medalist 1270 Product Manual, August 1995 Performance • Fast ATA-2 performance (Supports multiword DMA modes 2 and PIO modes 4 for up to 16.6-Mbyte-per-second transfer rates. Supports Multiple block read/write.) • 256-Kbyte segmented buffer • 12-msec average seek time Energy efficiency •...
  • Page 11 Medalist 1270 Product Manual, August 1995 Drive specification ST31270A Average latency (msec) 6.67 Internal-data transfer rate (Mbits per sec max) 29.6 to 57.2 External transfer rate (Mbytes per sec max) 16.6 Cache buffer (Kbytes) Height (inches max) 1.00 Width (inches max) 4.02...

  • Page 13: Specifications

    • Use a software driver that surpasses the 528-Mbyte barrier to install the drive. Note. A Seagate driver that surpasses the 528-Mbyte barrier is available. Ask your Seagate representative for details. • Use the dual-drive emulation option available on the drive. This option makes the drive two logical drives for the computer.

  • Page 14: Standard Configuration

    Medalist 1270 Product Manual, August 1995 1.2 Standard configuration Cylinders 2,485 Heads Sectors Total sectors 2,504,880 2,505,528 Formatted capacity (Mbytes 1,282.4 1,282.8 1.3 Dual-drive emulation configuration Dual-drive emulation makes the drive look like two logical drives to the computer. Enter translation geometries for both drive-type parameters in the CMOS.

  • Page 15: Functional Specifications

    Medalist 1270 Product Manual, August 1995 1.5 Functional specifications Interface Zone Bit Recording method RLL (1,7) External data burst transfer rate 16.6 DMA mode 2 (Mbytes per sec) External data burst transfer rate 16.6 PIO mode 4 (Mbytes per sec) Internal data-transfer rate 29.62 to 57.25...

  • Page 16: Seek Time

    Medalist 1270 Product Manual, August 1995 1.7 Seek time Seek time is the interval between the time the actuator begins to move and the time the head has settled over the target track. Seek time is a true statistical average of at least 10,000 measurements of seek time.

  • Page 17: Start/Stop Time

    Medalist 1270 Product Manual, August 1995 1.8 Start/stop time Within 20 seconds after power is applied, the drive is ready. Within 15 seconds after power is removed, the drive spindle stops rotating. Amps Seconds Figure 1. Typical startup current profile 1.9 Typical power-up and power-down sequence...

  • Page 18: Power-Down Sequence

    Medalist 1270 Product Manual, August 1995 1.9.2 Power-down sequence Caution. Do not move the drive until the motor has come to a complete stop. 1. The power is turned off. 2. Within 3 seconds, the motor begins to spin down.
  • Page 19 Medalist 1270 Product Manual, August 1995 • Seeking. Seek mode is entered from Idle mode. The read/write heads are moved to a specific location on the disc surface in preparation for reading from or writing to the disc. Read/write electronics are powered down but servo electronics are active.

  • Page 20: Power Consumption

    Medalist 1270 Product Manual, August 1995 1.11.2 Power consumption In the table below, the values apply at the drive power connector. Current was measured with an RMS DC ammeter. Read/ Spinup Seeking write Idle Standby Current at +12V Amps peak —...

  • Page 21: Temperature Gradient

    Medalist 1270 Product Manual, August 1995 1.13.2 Temperature gradient 20 ° C per hour (36 ° F per hour) Operating 30 ° C per hour (54 ° F per hour) Nonoperating 1.13.3 Altitude Operating –1,000 ft to 10,000 ft (–305 m to 3,048 m) Nonoperating –1,000 ft to 40,000 ft (–305 m to 12,192 m)

  • Page 22: Acoustics

    Federal Communications Commission authorization, verification or cer- tification of the device is required. Seagate Technology, Inc. has tested this drive in an enclosure as described above to ensure that the total assembly (enclosure, disc drive, motherboard, power supply, etc.) does comply with the limits for a...
  • Page 23 Medalist 1270 Product Manual, August 1995 Class B computing device, pursuant to Subpart J of Part 15 of the FCC rules. Operation with noncertified assemblies is likely to result in interfer- ence to radio and television reception. Radio and television interference. This equipment generates and uses radio frequency energy and, if not installed and used in strict accordance with the manufacturer’s instructions, may cause interference to radio and...
  • Page 24 Medalist 1270 Product Manual, August 1995 Sicherheitsanleitung 1. Das Gerrät ist ein Einbaugerät, das für eine maximale Umgebung- stemperatur von 55°C vorgesehen ist. 2. Zur Befestigung des Laufwerks werden 4 Schrauben 6-32 UNC-2A benötigt. Bei seitlicher Befestigung darf die maximale Länge der Schrauben im Chassis nicht mehr als 5,08 mm und bei Befestigung an der Unterseite nicht mehr als 5,08 mm betragen.

  • Page 25: Configuring And Mounting The Drive

    Medalist 1270 Product Manual, August 1995 2.0 Configuring and mounting the drive This section contains the specifications and instructions for configuring and mounting the drive. 2.1 Handling and static-discharge precautions After you unpack the drive, and before you install it in a system, be careful not to damage it through mishandling.

  • Page 26: I/O Cable And Connector

    Medalist 1270 Product Manual, August 1995 2.2 I/O cable and connector The drive uses a 40-pin, male I/O connector with two rows of twenty pins each and a notch for keying. Pin 20 is removed for keying purposes. A drawing of the I/O connector is shown in Figure 2. Pin 1 is located near the 4-pin power connector when the I/O connector is mounted.

  • Page 27: The Options Jumper Block (J8)

    Medalist 1270 Product Manual, August 1995 2.4 The options jumper block (J8) The options jumper block (J8), shown in Figure 3 on page 20, is used to configure the drive for operation. It is a 12-pin dual header and uses 0.1-inch connectors and jumpers.

  • Page 28: Figure 3. Connectors

    Medalist 1270 Product Manual, August 1995 J8. Options jumper block J8 pin 1 J1. Interface connector pin 1 J3. Standard power connector Circuit board +5V return +12V return +12V Figure 3. Connectors...

  • Page 29: Figure 4. Configuration Settings

    Medalist 1270 Product Manual, August 1995 Options jumper block (J8) Circuit board side up Spares One drive only Drive is master; slave is present Drive is slave when another drive is present Dual-drive emulation Cannot be used with cable select;...

  • Page 30: Remote Led

    (J8). The LED is polarized and can be damaged if it is installed incorrectly. Because the jumper block uses a 0.1-inch connector, you may need to replace the current connector. Use Seagate connector part number 10562-001 or an equivalent. 2.4.4 Cable-select Computers that use cable-select determine the master and slave drives by selecting or deselecting pin 28, CSEL, on the interface bus.

  • Page 31: Mounting The Drive

    Medalist 1270 Product Manual, August 1995 2.5 Mounting the drive You can mount the drive in any orientation. Note. If you format the drive before mounting it in the computer, it is best to format it in the same physical orientation it will have when it is mounted.

  • Page 32: Figure 6. Mounting Dimensions

    Medalist 1270 Product Manual, August 1995 In the following figure, all dimensions are in inches and millimeters (mm). 1.00 (25.40) max Six 6-32 UNC-2B threaded holes Max screw insertion depth: 0.20 inch 2.362 ± 0.010 0.250 ± 0.010 (59.944 ± 0.254) (6.350 ±...

  • Page 33: Ata Interface

    3.1 ATA Interface connector pin assignments The signal name and signal direction for each I/O connector pin is shown in Figure 7 on page 26. See the Seagate ATA Interface Reference Manual , publication number 36111- xxx , for a complete description of each pin.

  • Page 34: Figure 7. Ata Interface Connector Pin Assignments

    Medalist 1270 Product Manual, August 1995 Drive Host Reset – Host Reset Ground Ground Host Data Bus Bit 7 Host Data Bus Bit 8 Host Data Bus Bit 6 Host Data Bus Bit 9 Host Data Bus Bit 5 DD10...

  • Page 35: Command Set

    For a complete description of all of the other ATA interface commands that are used, refer to the Seagate ATA Interface Reference Manual , part number 36111- xxx . Additional information on Fast ATA-re- lated features is provided by the Small Form Factor specification, SFF- 8011 Rev 1.1, September 18, 1993.
  • Page 36 Medalist 1270 Product Manual, August 1995 continued from previous page Parameters used Command Command name code (in hex) FR SC SN CY DH Identify Drive Idle 97, E3 Idle and Set Idle Timer Idle Immediate 95, F8, E1 Initialize Drive Parameters...

  • Page 37: Identify Drive Command (Ec H )

    Medalist 1270 Product Manual, August 1995 3.2.1 Identify Drive command (EC The Identify Drive parameters for the drive are listed in the table below. The Seagate ATA Interface Reference Manual , publication number 36111- xxx , describes the Identify Drive command in detail. Word...
  • Page 38 Medalist 1270 Product Manual, August 1995 continued from previous page Word Description Value Maximum Sectors 8010H R/W Multiple supported; per interrupt per R/W 16 sectors per block Multiple command Double word I/O 0000 Not supported Capabilities 0B01 IORDY, DMA, LBA...

  • Page 39: Set Features Command (Ef H )

    Medalist 1270 Product Manual, August 1995 Word Description Value Minimum PIO 120 nsec transfer with IORDY xxxx Reserved 69–127 xxxx Seagate-reserved 128–159 160– 255 Reserved xxxx 3.2.2 Set Features command (EF The Set Features command (command code EF ) allows the user to enable and disable the multisegmented cache features and to identify the transfer modes the drive uses.
  • Page 40 Medalist 1270 Product Manual, August 1995 3.2.2.1 PIO and DMA Data-Transfer Modes You can use the Set Features command to set the type of data-transfer mechanism and transfer mode that the drive uses. To do this: 1. 1. Write Set Features command value 03 (Set Data Transfer mode) to the Features register.

  • Page 41: Standby Timer Timeout Period

    Idle command or Standby command. The value corresponds to a predetermined period of drive inactivity. The table below lists the values the Seagate drive uses and their corresponding timeout period.

  • Page 43: Appendix. Timing Diagrams

    Medalist 1270 Product Manual, August 1995 Appendix. Timing diagrams Without IORDY, the drive operates at programmed I/O timing specifica- tions, as shown below. Address valid DIOR− and DIOW− Write data valid Read data valid IOCS16− Figure 8. Programmed I/O timing without IORDY...

  • Page 44: Figure 9. Programmed I/O Timing With Iordy

    Medalist 1270 Product Manual, August 1995 When using IORDY, the drive operates at programmed timing specifica- tions, as shown below. Address valid IOCS16− DIOR− or DIOW− IORDY Write data valid Read data valid Figure 9. Programmed I/O timing with IORDY...

  • Page 45: Figure 10. Multiword Dma Timing

    Medalist 1270 Product Manual, August 1995 The drive operates at multiword DMA mode 2 timing specifications, as shown below. DMARQ DMACK− DIOR− or DIOW− Read data valid Write data valid Figure 10. Multiword DMA timing Time Description Cycle time 120 nsec —...
  • Page 48 Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, California 95066, USA Publication Number: 36316-001, August 1995, Printed in USA...

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