..................................... Marathon 2250 ..................................... Marathon 1680 ..................................... ATA Interface Drives ..................................... ..................................... Product Manual .....................................
..................................... Marathon 2250 (ST92255AG) ..................................... Marathon 1680 (ST91685AG) ..................................... ATA Interface Drives ..................................... ..................................... Product Manual .....................................
1997 Seagate Technology, Inc. All rights reserved Publication Number: 36337-101, Rev. B, March 1997 Seagate, Seagate Technology and the Seagate logo are registered trademarks of Seagate Technology, Inc. Marathon and SafeRite are trademarks of Seagate Technology. Other product names are registered trademarks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications.
Marathon 2250 and Marathon 1680 Product Manual iii Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specification summary table . . . . . . . . . . . . . . . . . . . 2 1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . 5 1.1.1 Default logical geometry . . . . . . . . . . . . . . . . 5 1.1.2 Supported CHS translation geometries . . . . . . . . 5 1.2 Physical organization . . . . . . . . .
iv Marathon 2250 and Marathon 1680 Product Manual 1.11.2 Electromagnetic Compatibility . . . . . . . . . . . . 15 1.11.3 FCC verification . . . . . . . . . . . . . . . . . . . . 15 2.0 Drive mounting and configuration . . . . . . . . . . . . . . 17 2.1 Handling and static-discharge precautions . . . . . . . . . 17 2.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . 17 2.2.1 Master/slave configuration . . . . . . . . . . . . . . . 17 2.3 Remote LED configuration 2.4 Drive mounting . . . . .
Marathon 2250 and Marathon 1680 Product Manual v Figures Figure 1. Typical startup and operation current profile. . . . . . . . 9 Figure 2. Connector and master/slave jumper setup . . . . . . . . 18 Figure 3. Drive mounting dimensions—side and bottom view. . . . 20 Figure 4. Drive mounting dimensions—end view . . . . . . . . . . 21 Figure 5. ATA Interface connector dimensions . . . . . . . . . . . 23 Figure 6. I/O pins and supported ATA signals . . . . . . . . . . .
vi Marathon 2250 and Marathon 1680 Product Manual
Marathon 2250 and Marathon 1680 Product Manual 1 Introduction The Marathon 2250 (ST92255AG) and Marathon 1680 (ST91685AG) provide very high storage capacity in a small, 17-mm hard disc drive.
2 Marathon 2250 and Marathon 1680 Product Manual Specification summary table The specifications listed in this table are for quick reference. For details on a specification measurement or definition, see the appropriate section of this manual.
Marathon 2250 and Marathon 1680 Product Manual Drive Specification Power-on to ready (sec typical) Standby to ready (sec typical) Spinup current (peak) 3 Marathon 2250 Marathon 1680 3.5 2 1.3 amps Read/Write power and current (typical) 2.5 watts, 0.5 amps Seek power and current (typical) 2.5 watts, 0.5 amps Idle mode power and current (typical) 1.2 watts, 0.24 amps Standby mode power and current (typical) 0.3 watts, 0.06 amps Sleep mode power and current (typical) 0.1 watts, 0.
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Marathon 2250 and Marathon 1680 Product Manual 5 1.0 Drive specifications Unless otherwise noted, all specifications are measured under ambient conditions, at 40°C, at sea level and nominal power. 1.1 Formatted capacity Marathon 2250 Marathon 1680 Guaranteed Kbytes 2,250,209 1,680,634 Guaranteed sectors (LBA mode) 4,394,940 3,282,490 Bytes per sector 512 512 Note.
6 Marathon 2250 and Marathon 1680 Product Manual The Marathon 1680 supports any translation geometry that satisfies all of the following conditions: • Sectors per track ≤ 63 • Read/write heads ≤ 16 • (Sectors per track) × (read/write heads) × (cylinders) ≤ 3,282,048 1.2 Physical organization Marathon 2250 Marathon 1680 Read/Write heads 10 8 Discs 5 4 1.
Marathon 2250 and Marathon 1680 Product Manual 7 1.4 Physical characteristics Marathon 2250 Marathon 1680 Maximum height (inches) (mm) 0.676 (17.2) 0.676 (17.2) Maximum width (inches) (mm) 2.76 (70.1) 2.76 (70.1) Maximum length (inches) (mm) 3.955 (100.45) 3.955 (100.45) Typical weight (ounces) (grams) 7.19 (204) 7.05 (200) Note. Maximum length excludes I/O connector pins that may extend up to 0.015 inches beyond the edge of the head/disc assembly, per SFF 8004 specification. 1.
8 Marathon 2250 and Marathon 1680 Product Manual 1.6 Start times Power-on to Ready (sec) 3.5 typical, 7 max Standby to Ready (sec) 2 typical, 3 max Idle to Ready (sec) 0.4 max 1.7 Power specifications The drive receives DC power (+5V) through pin 41 and pin 42 of the AT interface connector. 1.7.1 Power consumption Power requirements for the drive are listed in the table below. Typical power measurements are based on an average of drives tested under nominal conditions, using 5.
Marathon 2250 and Marathon 1680 Product Manual 9 Current (mA) 1,400 Drive ready 1,200 1,000 Upload code Idle mode Active mode 800 Standby mode Sleep mode 600 400 Spinup 200 0 0 1 2 3 4 5 5 6 7 8 9 10 11 12 Time (seconds) Figure 1. Typical startup and operation current profile 1.7.1.1 Typical current profile Figure 1 shows a projected drive startup and operation current profile for the Marathon 2250 and the Marathon 1680. Note.
10 Marathon 2250 and Marathon 1680 Product Manual • 100 mV peak-to-peak triangular-wave injected noise at the power connector. The frequency is 100 KHz to 10 MHz with equivalent resistive loads. Note. Equivalent resistance (9.26 ohms) is calculated by dividing the nominal voltage (5V) by the typical RMS read/write current (0.54 amps). 1.7.4 Voltage tolerance Voltage tolerance (including noise): +5 volts, ± 5% 1.7.
Marathon 2250 and Marathon 1680 Product Manual 11 When the standby timer expires, the drive makes the transition to the Standby mode. The drive requires approximately 100–200 msec to return to Active mode from Idle mode. Standby mode. The drive enters Standby mode when the host sends a Standby or Standby Immediate command. If the standby command has set the standby timer, the drive enters Standby mode automatically after the drive has been inactive for the specified length of time.
12 Marathon 2250 and Marathon 1680 Product Manual 1.8 Environmental tolerances 1.8.1 Ambient temperature Operating 5° to 55°C (41° to 131°F) Nonoperating –40° to 70°C (–40° to 158°F) Caution. This drive needs sufficient airflow so that the maximum surface temperature at the center of the top cover of the drive does not exceed 62 degrees C (144 degrees F). 1.8.
Marathon 2250 and Marathon 1680 Product Manual 13 Note. At power-down, the read/write heads automatically move to the shipping zone. The head and slider assembly park inside of the maximum data cylinder. When power is applied, the heads recalibrate to Track 0. 1.8.5.1 Operating shock The Marathon 2250 and the Marathon 1680 incorporate SafeRite shock protection and can withstand a maximum operating shock of 125 Gs without nonrecoverable data errors (based on half-sine shock pulses of 2 msec). 1.8.5.
14 1.8.6.2 Marathon 2250 and Marathon 1680 Product Manual Nonoperating vibration The following table lists the maximum nonoperating vibration that the drive may experience without incurring physical damage or degradation in performance. 5–22 Hz 0.2-inch displacement (peak-to-peak) 22–400 Hz 4 Gs acceleration (0 to peak) 400–22 Hz 4 Gs acceleration (0 to peak) 22–5 Hz 0.2-inch displacement (peak-to-peak) 1.
Marathon 2250 and Marathon 1680 Product Manual 15 1.11 Agency certification 1.11.1 Safety certification The drive is recognized in accordance with UL 1950 and CSA C22.2 (950-M89) and meets all applicable sections of IEC 380, IEC 435, IEC 950, VDE 0806/08.81 and EN 60950 as tested by TUV-Rheinland, North America. 1.11.
16 Marathon 2250 and Marathon 1680 Product Manual 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 with radio or television reception (which can be determined by turning the equipment on and off), try one or more of the following corrective measures: • Reorient the receiving antenna.
Marathon 2250 and Marathon 1680 Product Manual 17 2.0 Drive mounting and configuration 2.1 Handling and static-discharge precautions After unpacking, but before installation, the drive may be exposed to potential handling and ESD hazards. You must observe standard staticdischarge precautions. A grounded wrist-strap is recommended. Handle the drive only by the sides of the head/disc assembly. Avoid contact with the printed circuit board, all electronic components and the interface connector.
18 Marathon 2250 and Marathon 1680 Product Manual Note. Drive is shown with circuit board up. Master/slave Pin 1 configuration jumpers Pin 20 removed for keying Circuit board B A D C 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 Figure 2.
Marathon 2250 and Marathon 1680 Product Manual 19 2.3 Remote LED configuration The drive indicates activity to the host through the DASP– line (pin 39) on the ATA interface. This line may be connected to a drive status indicator driving an LED at 5V. The line has a 30 mA nominal current limit; however, most external LEDs are sufficiently bright at 15 mA. Because the LED drops 1.7 volts, we recommend that you place a 200-ohm resistor in series with the LED to limit the current to 15 mA. 2.
20 Marathon 2250 and Marathon 1680 Product Manual A40 A39 S1 (to tips of I/O connector pins) A6 (to end of HDA) A1 +A2 –A3 A25 A24 A23 Z A37 X2 A37 X1 A21 ± A22 Y A26 thread, 4PLC min A38 full thread center within A27 of position specified A31 A30 A28 A7 A37 Z1 A37 Z2 A4 ± A5 (width at mounting holes) A32 thread, 4PLC min A41 full thread center within A33 of position specified A37 Z4 X A29 A37 Z3 A8 z x y Figure 3.
Marathon 2250 and Marathon 1680 Product Manual Pin 20 removed for keying Pin 44 21 Pin 1 A34 Z A35 A1 +A2 –A3 A36 X A12 Detail A13 ± A14 A19 M z x A20 M A11 A9 A17 ± A18 Z A15 M z x A16 M A10 ± A10.1 X Figure 4. Drive mounting dimensions—end view (for dimension specifications, see table below). Mounting dimension specifications Dim. A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A10.
22 Marathon 2250 and Marathon 1680 Product Manual continued from previous page Mounting dimension specifications Dim.
Marathon 2250 and Marathon 1680 Product Manual 23 2.5 ATA interface connector The drive connector is a 44-conductor connector with 2 rows of 22 male pins on 0.079-inch (2 mm) centers (see Figure 4 on page 21 and Figure 5). The mating cable connector is a 44-conductor, nonshielded connector with 2 rows of 22 female contacts on 0.079-inch (2 mm) centers. The connectors should provide strain relief and should be keyed with a plug in place of pin 20.
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Marathon 2250 and Marathon 1680 Product Manual 25 3.0 ATA Attachment-3 Interface (ATA-3) The drives in this manual comply with the ATA-3 Standard, proposed by the X3T10 committee, a Technical Committee of Accredited Standards Committee X3, of the American National Standards Institute (ANSI). The X3T10 committee has been renamed to X3T13 to reflect its current standards work. For more information about the committee and the standards, see the committee’s Internet FTP site: ftp://fission.dt.wdc.
26 Marathon 2250 and Marathon 1680 Product Manual Drive pin # 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 35 36 37 38 39 40 41 42 43 44 Signal name Reset– Ground DD7 DD8 DD6 DD9 DD5 DD10 DD4 DD11 DD3 DD12 DD2 DD13 DD1 DD14 DD0 DD15 Ground (removed) DMARQ Ground DIOW– Ground DIOR– Ground IORDY CSEL DMACK– Ground INTRQ IOCS16– DA1 PDIAG– DA0 DA2 CS1FX– CS3FX– DASP– Ground Power Power Ground Reserved Host pin # and signal description 1 2 3 4 5 6 7 8 9 10 11
Marathon 2250 and Marathon 1680 Product Manual 27 3.2 ATA Interface commands 3.2.1 Supported ATA commands The following table lists supported ATA-standard and Seagate-specific drive commands. For a detailed description of the ATA commands, refer to the Draft Proposed ATA-3 Standard. See Section 3.2.4 on page 33 for details and subcommands used in the S.M.A.R.T. implementation.
28 Marathon 2250 and Marathon 1680 Product Manual continued from previous page Command name Command code Supported by Marathon 2250 and Marathon 1680 Execute S.M.A.R.
Marathon 2250 and Marathon 1680 Product Manual 29 The following commands contain drive-specific features that may not be described in the Draft Proposed ATA-3 Standard. 3.2.2 Identify Drive command The Identify Drive command (command code ECH) transfers information about the drive to the host following power-up. The data is organized as a single 512-byte block of data, the contents of which are shown in the table below. All reserved bits or words should be set to zero.
30 Marathon 2250 and Marathon 1680 Product Manual continued from previous page Word Description Contents ST92255AG or ST91685AG 27–46 Drive model number: (40 ASCII characters, padded with blanks to end of string) 47 Maximum sectors per interrupt on read/write multiple 0010H 48 Double word I/O (not supported) 0000H 49 Standby timer values supported per ATA standard, IORDY supported, IORDY can be disabled 2C00H 50 ATA-reserved 0000H 51 PIO data-transfer cycle timing mode 0200H 52 DMA t
Marathon 2250 and Marathon 1680 Product Manual Word Description 31 Contents 65 Minimum multiword DMA transfer cycle time per word (120 nsec) 0078H 66 Recommended multiword DMA transfer cycle time per word (180 nsec) 0078H 67 Minimum PIO cycle time without IORDY flow control (363 nsec) 016BH 68 Minimum PIO cycle time with IORDY flow control (120 nsec) 0078H 69–127 ATA-reserved 0000H 128–159 Seagate-reserved xxxxH 160–255 ATA-reserved 0000H Note.
32 3.2.3 Marathon 2250 and Marathon 1680 Product Manual Set Features command This command controls the implementation of various features that the drive supports. 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 that the drive supports, the command is aborted. Power-on default has the read look-ahead and write caching features enabled and 4 bytes of ECC.
Marathon 2250 and Marathon 1680 Product Manual 99H 9AH AAH ABH BBH CCH 33 Not implemented Not implemented Enable read look-ahead (read cache) feature (default) Not implemented 4 bytes of ECC apply on read long and write long commands (default) Enable reverting to power-on defaults (default) At power-on or after a hardware reset, the default values of the features are as indicated above. A software reset also changes the features to default values unless a 66H command has been received.
34 3.2.4 Marathon 2250 and Marathon 1680 Product Manual S.M.A.R.T. commands Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.) is an emerging technology that provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the Seagate drive monitors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines that a failure is likely, S.M.A.R.T.
Marathon 2250 and Marathon 1680 Product Manual 3.2.5 35 Drive-Security commands The drive-security commands provide a password-based security system to prevent unauthorized access to a disc drive. During manufacturing, the master password, SEAGATE, is set for the drive, and the lock function is disabled. The system manufacturer or dealer may set a new master password using the Security Set Password command (F1H), without enabling the lock function.
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Marathon 2250 and Marathon 1680 Product Manual 37 Appendix. Compatibility notes ECC testing When a Marathon 2250 or Marathon 1680 performs hardware-based ECC error correction on-the-fly, the drive does not report an ECC error. This allows ECC correction without degrading drive performance. Some older drive diagnostic programs test ECC features by creating small data errors and then checking to see if they are reported.
Seagate Technology, Inc. 920 Disc Drive, Scotts Valley, California 95066, USA Publication Number: 36337-101, Rev.