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Medalist 1270
ATA Interface Drive
Product Manual
Medalist 1270
ATA Interface Drive
Product Manual
© 1995 Seagate Technology, Inc. All rights reserved
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 registered 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 from Seagate Technology, Inc.
Medalist 1270 Product Manual, August 1995 iii
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick specification chart . . . . . . . . . . . . . . . . . . . . . . 2
1.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . 5
1.1.1 528-Mbyte capacity barrier . . . . . . . . . . . . . . . . 5
1.2 Standard configuration . . . . . . . . . . . . . . . . . . . . 6
1.3 Dual-drive emulation configuration . . . . . . . . . . . . . . 6
1.4 Physical organization . . . . . . . . . . . . . . . . . . . . . 6
1.5 Functional specifications . . . . . . . . . . . . . . . . . . . 7
1.6 Physical dimensions . . . . . . . . . . . . . . . . . . . . . . 7
1.7 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.7.1 Multisegmented cache buffer . . . . . . . . . . . . . . . 8
1.8 Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.9 Typical power-up and power-down sequence . . . . . . . . . 9
1.9.1 Power-up sequence . . . . . . . . . . . . . . . . . . . 9
1.9.2 Power-down sequence . . . . . . . . . . . . . . . . . 10
1.10 Auto-park . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.11 Power specifications . . . . . . . . . . . . . . . . . . . . 10
1.11.1 Power management . . . . . . . . . . . . . . . . . . 10
1.11.2 Power consumption . . . . . . . . . . . . . . . . . . 12
1.12 Input noise . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.13 Environmental specifications . . . . . . . . . . . . . . . . 12
1.13.1 Ambient temperature . . . . . . . . . . . . . . . . . 12
1.13.2 Temperature gradient . . . . . . . . . . . . . . . . . 13
1.13.3 Altitude . . . . . . . . . . . . . . . . . . . . . . . . 13
1.13.4 Relative humidity . . . . . . . . . . . . . . . . . . . 13
1.14 Shock and vibration . . . . . . . . . . . . . . . . . . . . 13
1.15 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.16 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 14
iv Medalist 1270 Product Manual, August 1995
1.17 Agency listings . . . . . . . . . . . . . . . . . . . . . . . 14
1.18 FCC verification . . . . . . . . . . . . . . . . . . . . . . 14
2.0 Configuring and mounting the drive . . . . . . . . . . . . . 17
2.1 Handling and static-discharge precautions . . . . . . . . . 17
2.2 I/O cable and connector . . . . . . . . . . . . . . . . . . 18
2.3 Power connector . . . . . . . . . . . . . . . . . . . . . . . 18
2.4 The options jumper block (J8) . . . . . . . . . . . . . . . . 19
2.4.1 Master/slave configuration . . . . . . . . . . . . . . . 19
2.4.2 Dual-Drive emulation . . . . . . . . . . . . . . . . . . 19
2.4.3 Remote LED . . . . . . . . . . . . . . . . . . . . . . 22
2.4.4 Cable-select . . . . . . . . . . . . . . . . . . . . . . 22
2.5 Mounting the drive . . . . . . . . . . . . . . . . . . . . . . 23
3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.1 ATA Interface connector pin assignments . . . . . . . . . . 25
3.2 Command set . . . . . . . . . . . . . . . . . . . . . . . . 27
3.2.1 Identify Drive command (EC
H
) . . . . . . . . . . . . . 29
3.2.2 Set Features command (EF
H
) . . . . . . . . . . . . . 31
3.2.3 Standby timer timeout period . . . . . . . . . . . . . . 33
3.2.4 Sleep command (99
H
, E6
H
) . . . . . . . . . . . . . . 33
Appendix. Timing diagrams . . . . . . . . . . . . . . . . . . . . 35
Medalist 1270 Product Manual, August 1995 v
Figures
Figure 1. Typical startup current profile . . . . . . . . . . . . . . . . 9
Figure 2. ATA interface connector . . . . . . . . . . . . . . . . . 18
Figure 3. Connectors . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 4. Configuration settings . . . . . . . . . . . . . . . . . . . 21
Figure 5. Connecting cable-selected drives . . . . . . . . . . . . . 22
Figure 6. Mounting dimensions . . . . . . . . . . . . . . . . . . . 24
Figure 7. ATA interface connector pin assignments . . . . . . . . 26
Figure 8. Programmed I/O timing without IORDY . . . . . . . . . . 35
Figure 9. Programmed I/O timing with IORDY . . . . . . . . . . . 36
Figure 10. Multiword DMA timing . . . . . . . . . . . . . . . . . . 37
Medalist 1270 Product Manual, August 1995 1
Introduction
This manual describes the functional, mechanical and interface specifications 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 performance, technology to smooth data flow and power management.
Fast ATA-2 performance means that the drive supports PIO mode 4 and multiword DMA mode 2 transfer modes and multiple block read/write.
When the host chooses either transfer mode, the drive provides bursttransfer rates of up to 16.6 Mbytes per second. Multiple block read/write allows the drive to gather several blocks of data in cache and transfers them in a single burst.
The drive uses a 256-Kbyte segmented cache and embedded servo technology to smooth data flow. The 256-Kbyte segmented cache provides a designated area where blocks of contiguous read or write data can be staged for transfer in a single burst. The embedded servo allows for accurate head positioning and eliminates periodic thermal recalibration for data transfers without interruption.
The drive supports Active, Idle and Standby power-management modes.
Power-saving modes are entered by request of the computer. Standby mode reduces power consumption to 1 watt (typical) while retaining drive accessibility. (The power-management and other ATA commands the drive supports are listed on pages 27 and 28. Commands with specific applications for the drive are discussed in Section 3.0 on page 25.)
The following is a summary of the drive’s features:
Capacity
•
1,282.8 Mbytes formatted
•
LBA translation support
•
Available software driver that surpasses the 528-Mbyte barrier imposed by some BIOSs
•
Available software driver that provides expanded 32-bit disk access support for Windows
2 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
•
Active, Idle and Standby power-management modes
•
1 watt typical power dissipation rating in Standby mode
Acoustics
•
30-dBA typical idle acoustic sound-pressure level
Quick specification chart
The following table serves as a quick reference for the ST31270A performance specifications. These and other specifications are discussed in “Specifications” on page 5.
Drive specification ST31270A
Formatted capacity (Mbytes) (
×
10
6
bytes) 1,282.8
Total sectors 2,505,528
Bytes per sector 512
Sectors per track
Logical Read/Write heads
Physical cylinders
Physical Read/Write heads
63
16
3,876
6
Physical disc
Recording density (bits per inch)
Track density (tracks per inch)
Spindle speed (RPM)
Track-to-track seek time (msec typical)
Average seek time (msec typical)
Full-stroke seek time (msec typical)
3
73,530
4,250
4,500
3.5
12
25.0
Medalist 1270 Product Manual, August 1995
Drive specification
Average latency (msec)
ST31270A
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)
Width (inches max)
Depth (inches max)
256
1.00
4.02
5.77
Typical weight (lb)
Spinup current (typical)
Seek power (typical)
Read/Write power and current (typical)
Idle total power (typical)
Standby/Sleep total power (typical)
Voltage tolerance (including noise): +5V
Voltage tolerance (including noise): +12V
Operating temperature (°C)
Drive acoustics, Idle mode (dBA)
Drive acoustics, seeking (dBA)
1.5
1.9A
6.60W
4.50W
2.75W
1.0W
±
5%
±
5%
5 to 55°C
30 dBA
34 dBA
3
Medalist 1270 Product Manual, August 1995 5
1.0 Specifications
1.1
Formatted capacity
The drive was low-level formatted at the factory. You cannot low-level format it.
The drive was configured in translation mode at the factory. It supports cylinder-head-sector addressing (CHS) and logical-block addressing
(LBA) modes. You can use the Identify Drive (EC
H
) command to verify the address modes the drive supports, the number of cylinders, sectors per track, total number of sectors, heads and other drive parameters. The
Identify Drive parameters are listed in Section 3.2.1 on page 29.
1.1.1
528-Mbyte capacity barrier
Computers using some BIOSs impose a 528-Mbyte barrier on the hard disc drive. The BIOS in these systems use a CHS addressing scheme that does not acknowledge more than 1,024 cylinders in the translation geometry. To access the drive’s entire capacity, you must:
•
Use a BIOS that acknowledges more than 1,024 cylinders or uses
LBA.
•
Use a host adapter that accepts more than 528 Mbytes.
•
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. Both drive-type parameters are configured in the CMOS and each logical drive is partitioned and formatted independently. However, you can use only the maximum translation-geometry values the BIOS permits—1,024 cylinders, 16 heads and 63 sectors. This restricts each logical drive to less than 528 Mbytes.
6 Medalist 1270 Product Manual, August 1995
1.2
Standard configuration
Cylinders
Heads
Sectors
Total sectors
Formatted capacity (Mbytes
1
)
CHS
2,485
16
63
2,504,880
1,282.4
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. Partition and format each logical drive. Use the maximum translation geometry values allowed by the BIOS to configure the CMOS.
Use the translation geometry values in the table below to configure the
CMOS. These values provide each logical drive with 527.6 Mbytes.
A second, physical drive cannot be installed on the same port when dual-drive emulation is used. Dual-drive emulation does not support cable-select. Also, the drive responds as a single drive to power-management commands.
Cylinders
Heads
Sectors
Total sectors
Formatted capacity (Mbytes
1
)
CHS
1,024
16
63
1,032,192
527.6
LBA
N/A
N/A
N/A
1.4
Physical organization
LBA
N/A
N/A
N/A
2,505,528
1,282.8
Read/write heads
Discs
ST31270A
6
3
1. One Mbyte equals one million bytes.
Medalist 1270 Product Manual, August 1995
1.5
Functional specifications
Interface
Zone Bit Recording method
External data burst transfer rate
2
,
DMA mode 2 (Mbytes per sec)
External data burst transfer rate
3
,
PIO mode 4 (Mbytes per sec)
Internal data-transfer rate
(Mbits per sec)
Spindle speed (RPM)
Cache size (Kbytes)
Physical cylinders
Bytes per sector
Recording density, max (BPI)
Track density (TPI)
1.6
Physical dimensions
The mounting dimensions are shown in Figure 6 on page 24.
Height, max
Width, max
Depth, max
Weight
1.00 inch (25.4 mm)
4.02 inches (102.1 mm)
5.77 inches (146.6 mm)
1.5 lb (0.68 Kg)
ATA
RLL (1,7)
16.6
16.6
29.62 to 57.25
4,500
±
0.5%
256
3,876
512
73,530
4,250
7
2. See Figure 10 on page 37 for timing specifications.
3. See Figure 9 on page 36 for timing specifications.
8 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.
All measurements are taken under nominal conditions of temperature and voltage with the drive mounted horizontally. The specifications in the table below are defined as follows:
•
Track-to-track seek time is the average of all possible single-track seeks in both directions.
•
Average seek time is measured by executing seeks in both directions between random cylinders.
•
Full-stroke seek time is half the time needed to seek from track 0 to the maximum track and back to track 0.
Track-to-track seek time
Average/typical seek time
Full-stroke seek time
Average latency
3.5 msec typ
4.5 msec max
12.0 msec read
14.0 msec write
25.0 msec typ
27.0 msec max
6.67 msec
Note. Host overhead varies between systems and cannot be specified.
Drive internal overhead is measured by issuing a no-motion seek.
Overhead is typically less than 0.5 msec.
1.7.1
Multisegmented cache buffer
The drive is available with a 256-Kbyte, multisegmented cache buffer that improves performance by eliminating access times under certain conditions.
Read look-ahead. The drive uses the read segments to store additional logical sectors, after the last requested sector, into a buffer before the computer requests the additional sectors. The cache buffer stores data from the start of a read until the buffer segment is full or until another command is received.
Write immediate. The drive uses the write segment to store write commands and data. After the drive receives all of the data for the command, it issues a write complete. Then, the drive writes the data to the disc.
Write merging. The drive accepts contiguous write commands and executes them as one command.
Medalist 1270 Product Manual, August 1995 9
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
2.0
T2
T3
T4 T5
1.0
T6
T7
0
0
T1
1 2 3 4 5
Seconds
Figure 1. Typical startup current profile
6 7 8 9
1.9
Typical power-up and power-down sequence
This section describes typical power-up and power-down sequences to assist you in evaluating the drive’s performance. They are not performance specifications. A typical startup current profile is shown in Figure 1.
Startup current profiles are unique for each drive.
1.9.1
Power-up sequence
1. Power is applied to the drive.
2. When power is applied, the LED is on for about 1 second.
3. The spindle motor reaches operating speed in about 4 seconds.
4. The magnetic actuator-lock releases the actuator.
5. The drive achieves final speed-control lock.
6. The heads are positioned over track 0 and the drive is ready.
10 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.
3. The read/write heads automatically move to the shipping zone, which is inside the maximum data cylinder.
4. The magnetic actuator-lock locks the arm. This completes the powerdown sequence.
1.10 Auto-park
Upon power-down, the read/write heads automatically move to the landing zone. The heads park inside the maximum data cylinder and the magnetic actuator-lock engages. When power is applied, the heads recalibrate to track 0.
1.11 Power specifications
1.11.1 Power management
The drive supports Active, Idle and Standby power-management modes.
The power-management commands that the drive supports are listed in the table on page 27. The table on page 12 shows the average typical power consumption rates for each power-management mode. The test criteria for each mode is defined below. The Idle and Standby timers are disabled at the factory.
All measurements were taken at the drive’s power connector. A true RMS meter is used to measure all modes except Standby. A DMM is used for
Standby measurements.
1.11.1.1 Active mode
During the Active mode, the drive is involved in spinup, seeking or read/write activities. The table shows the typical power-consumption rates for these activities.
•
Spinup. Spinup mode is entered from the Standby mode. The drive brings the spindle and discs up to operating speed. Power in this mode is defined as the peak power after starting spinup.
Medalist 1270 Product Manual, August 1995 11
•
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. Typical power is defined as the power average of executing random seeks with a 2-revolution (26.6
msec) dwell between Seek commands.
•
Read/write. Read/write mode is entered from Idle mode. Read/write electronics are activated and the servo is on track. The drive reads from or writes to the disc.
1.11.1.2 Idle mode
The motor is up to speed, the servo electronics are inactive and the heads are in the landing zone.
1.11.1.3 Standby mode
The spindle is stopped, the heads are parked in the landing zone, the actuator is latched and some of the drive electronics are powered down.
Note. When recovering from Standby or Sleep mode, you must allow the drive to post ready before reporting a time-out. The ST31270A can take up to 20 seconds to post ready. If it is the master with a slave, it can wait up to 31 seconds for the slave to complete diagnostics before posting ready.
1.11.1.4 Sleep mode
The sleep mode implementation is the same as Standby mode.
12 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.
Current at +12V
Amps peak
RMS amps typ
Watts typ
Current at +5V
RMS amps typ
Watts typ
Power
Total watts typ
Spinup Seeking
Read/ write
1.9
—
—
—
—
7.00
—
0.398
4.77
0.360
1.80
6.60
—
0.185
2.22
0.404
2.02
4.50
Idle
—
0.118
1.41
0.225
1.12
2.75
Standby
—
0.012
0.144
0.164
0.82
1.0
1.12 Input noise
Voltage tolerance
(including noise)
Input noise frequency
(max)
Input noise
(max, peak-to-peak)
+5V
±
5%
25 MHz
100 mV
+12V
±
5%
25 MHz
240 mV
1.13 Environmental specifications
1.13.1 Ambient temperature
Operating
Nonoperating
5
°
C to 55
°
C (41
°
F to 131
°
F)
–40
°
C to 70
°
C (–40
°
F to 158
°
F)
Medalist 1270 Product Manual, August 1995
1.13.2 Temperature gradient
Operating
Nonoperating
20
°
C per hour (36
°
F per hour)
30
°
C per hour (54
°
F per hour)
1.13.3 Altitude
Operating
Nonoperating
–1,000 ft to 10,000 ft (–305 m to 3,048 m)
–1,000 ft to 40,000 ft (–305 m to 12,192 m)
13
1.13.4 Relative humidity
Operating
Maximum operating gradient
Nonoperating
8% to 80% noncondensing
Maximum wet bulb 26
°
C (79
°
F)
10% per hour
5% to 95% noncondensing
Maximum wet bulb 26
°
C (79
°
F)
1.14 Shock and vibration
All shock and vibration specifications apply when the drive is mounted as recommended in Section 2.5 on page 23, with the input levels measured at the drive mounting screws. Shock measurements are based on an 11 msec, half sine wave shock pulse, not to be repeated more than twice per second.
During normal operating shock and vibration, there is no physical damage to the drive or performance degradation. During nonoperating shock and vibration, the read/write heads are positioned in the landing zone.
During abnormal operating shock and vibration, there is no physical damage to the drive, although performance may be degraded during the shock or vibration episode. When normal operating shock levels resume, the drive meets its performance specifications.
Shock
5–22 Hz vibration
Operating
2 Gs
0.020-inch displacement
22–400 Hz vibration 0.50 Gs
Abnormal
10 Gs
0.030-inch displacement
0.75 Gs
Nonoperating
75 Gs
0.160-inch displacement
4.00 Gs
14 Medalist 1270 Product Manual, August 1995
1.15 Acoustics
Sound pressure is measured 1 meter above the drive top cover at idle.
Value Idle
Sound pressure, typ (dBA) 30
Sound pressure, max (dBA) 33
Seek
36
39
1.16 Reliability
Read error rates are measured with automatic retries and data correction with ECC enabled and all flaws re-allocated. The mean time between failures (MTBF) is measured at nominal power at sea level and an ambient temperature of 40
°
C.
Nonrecoverable read errors
Seek errors
Contact start/stops
MTBF
Service life
1 per 10
13
bits transferred
1 per 10
7
physical seeks
40,000 cycles
300,000 power-on hours
5 years
1.17 Agency listings
This drive is listed by agencies as follows:
•
Recognized in accordance with UL478 and UL1950
•
Certified to CSA C22.2 No. 220-M1986 and CSA C22.2 No. 950
•
Certified to VDE 0805/05.90 and EN 60950/1.88 as tested by VDE
1.18 FCC verification
The ST31270A ATA interface drive is intended to be contained solely within a personal computer or similar enclosure (not attached to an external device). As such, a drive is considered to be a subassembly even when individually marketed to the customer. As a subassembly, no
Federal Communications Commission authorization, verification or certification 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
Medalist 1270 Product Manual, August 1995 15
Class B computing device, pursuant to Subpart J of Part 15 of the FCC rules. Operation with noncertified assemblies is likely to result in interference 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 television reception.
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:
•
Reorient the receiving antenna.
•
Move the device to one side or the other of the radio or TV.
•
Move the device farther away from the radio or TV.
•
Plug the equipment into a different outlet so that the receiver and computer are on different branch outlets.
If necessary, you should consult your dealer or an experienced radio/television technician for additional suggestions. You may find helpful the following booklet prepared by the Federal Communications Commission:
How to Identify and Resolve Radio-Television Interference Problems.
This booklet is available from the Superintendent of Documents, US
Government Printing Office, Washington, DC 20402. Refer to publication number 004-000-00345-4.
Note. This digital apparatus does not exceed the Class B limits for radio noise emissions from computer equipment as set out in the radio interference regulations of the Canadian Department of communications.
Le présent appareil numérique n
′
émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de Classe B prescrites dans le règlement sur le brouillage radioélectrique édicté par le Ministère des Communications du
Canada.
16 Medalist 1270 Product Manual, August 1995
Sicherheitsanleitung
1. Das Gerrät ist ein Einbaugerät, das für eine maximale Umgebungstemperatur 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.
3. Als Versorgungsspannugen werden benötigt:
+5V
±
5% 0,6A
+12V
±
5% 0,8A (1,9A fur ca. 30 Sek. fur
±
10%)
4. Die Versorgungsspannung mu
β
SELV entsprechen.
5. Alle Arbeiten auf dem Festplatte dürfen nur von Ausgebildetem Servicepersonal durchgeführt werden. Bitte schaffen Sie Festplatteetiketten nicht weg.
6. Der Einbaudes Drives mu
β
den Anforderungen gemä
β
DIN IEC 950V
DC 0805/05.90 entsprechen.
Medalist 1270 Product Manual, August 1995 17
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. Observe the following standard handling and static-discharge precautions:
Caution:
•
Keep the drive in its static-shielded bag until you are ready to complete the installation. Do not attach any cables to the drive while it is in its static-shielded bag.
•
Before handling the drive, put on a grounded wrist strap, or ground yourself frequently by touching the metal chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the entire installation procedure.
•
Handle the drive by its edges or frame only.
•
The drive is extremely fragile—handle it with care. Do not press down on the drive top cover.
•
Always rest the drive on a padded, antistatic surface until you mount it in the computer.
•
Do not touch the connector pins or the printed circuit board.
•
Do not remove the factory-installed labels from the drive or cover them with additional labels. Removal voids the warranty. Some factoryinstalled labels contain information needed to service the drive. Others are used to seal out dirt and contamination.
18 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.
0.70 ± 0.010
0.100 ± 0.010
0.235 ± 0.025
pin 1
0.230 ± 0.003
0.025 ± 0.002
0.025
± 0.002
0.160
0.100 typ
0.070 ± 0.010
1.90
2.00
Figure 2. ATA interface connector
The table below lists recommended parts for the mating connector. You can use equivalent parts.
Part
Connector
Connector
Flat cable
Description
40-pin
40-pin
AWG28 (stranded)
3M part number
3M-3417-7000
3M-3448-2040
3M-3365-40
To ensure the integrity of your data, use a 40-connector, nonshielded I/O cable with a maximum length of 18 inches (46 centimeters).
2.3
Power connector
The drive uses a standard 4-pin, male power connector. We recommend the following part number or their equivalents for the mating connector.
Part
Connector
Connector
Connector
Cable
Description
Housing
Pin (loose piece)
Pin (Reel)
18 AWG
Part number
AMP 1-480424-0
AMP 60619-4
AMP 6117-4
Medalist 1270 Product Manual, August 1995 19
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. The options jumper block is used to:
•
Configure the drive for single-drive operation
•
Configure the drive as master or slave
•
Configure the drive for dual-drive emulation
•
Configure the drive for cable select
•
Install a remote LED
The jumper settings for these options are shown in Figure 4 on page 21.
Use 0.1-inch connectors to configure the options jumper block. The drive is shipped with spare jumpers attached to pins 7 and 5 and pins 3 and 1 of the options jumper block. Use these jumpers to configure the drive.
Caution. If you try to install a jumper that is not the correct size, you may damage the jumper and the jumper-block pins.
2.4.1
Master/slave configuration
Use the following settings to configure the drive as master or slave.
One drive only. The drive is configured at the factory for single-drive operation. No jumpers are required for single-drive operation.
Drive as master. Place a jumper on pins 3 and 4.
Drive as slave. Place a jumper on pins 1 and 2.
2.4.2
Dual-Drive emulation
To configure the drive for dual-drive emulation, place a jumper on pins 5 and 6 and on pins 11 and 12. Dual-drive emulation makes the drive look like two logical drives to the computer. Use the translation geometry values given for dual-drive emulation in the table on page 6 for both drive-type settings in CMOS. These are the maximum values the BIOS can accept if it cannot recognize more than 528 Mbytes. Partition and format both logical drives.
If you use dual-drive emulation, you cannot connect a second, physical drive to the same I/O port. Dual-drive emulation does not support cable-select. Also, the drive responds as one drive to power-management commands.
20
J8. Options jumper block
J8 pin 1
Medalist 1270 Product Manual, August 1995 pin 1
J1. Interface connector
J3. Standard power connector
1 2 3 4 Circuit board
+5V
+5V return
+12V return
+12V
Figure 3. Connectors
Medalist 1270 Product Manual, August 1995
Options jumper block (J8)
13 11 9 7 5 3 1
Circuit board side up
14 12 10 8 6 4 2
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;
Cannot be used with a second, physical drive on the same port
Cable select
Remote LED connection pin 13 (–), pin 14 (+)
Figure 4. Configuration settings
21
22 Medalist 1270 Product Manual, August 1995
2.4.3
Remote LED
You can connect a remote LED to pins 13 (
−
) and 14 (+) of the options jumper block (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. Master and slave drives are determined by their physical position on the bus.
•
The drive plugged into the I/O connector that carries the CSEL signal is the master.
•
The drive plugged into the I/O connector that does not carry the CSEL signal is the slave.
To configure the drive for computers using cable select:
•
Install jumpers on pins 1 and 2 and pins 3 and 4 as shown in Figure
4 on page 21.
•
Connect the drive to the bus as shown in Figure 5.
Slave
CSEL not carried to pin 28 of this connector
Master
Pin 28 grounded at computer
Computer
Figure 5. Connecting cable-selected drives
Medalist 1270 Product Manual, August 1995 23
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.
Use the set of mounting guidelines below that are appropriate to the type of mounting holes used: either bottom mounting holes or side mounting holes. Refer to Figure 6 on page 24 for mounting dimensions.
Mounting with the optional 1-inch faceplate adds 0.180 inches
±
0.010
inches (4.572 mm
±
0.254 mm) to the overall drive length.
Bottom mounting holes. Insert four 6-32 UNC screws in the four bottom mounting holes as shown in Figure 6.
Caution. Do not insert the bottom mounting screws more than
0.20 inches (6 turns) into the drive frame. If you use a screw that is too long, you risk damaging the drive’s circuit board.
Side mounting holes. Use four 6-32 UNC screws in four of the six available side mounting holes as shown in Figure 6. Use two mounting holes on each side of the drive.
Caution. Do not insert the side mounting screws more than 0.20 inches
(6 turns) into the drive frame. If you use a screw that is too long, you risk damaging the drive’s circuit board.
24 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
(59.944 ± 0.254)
4.00 ± 0.02 (101.60 ± 0.51)
0.63 ± 0.02 (16.00 ± 0.51)
2.375 ± 0.020
(60.325 ± 0.508)
5.77 (146.56) max
1.750 ± 0.010
(44.450 ± 0.254)
0.250 ± 0.010
(6.350 ± 0.254)
Four 6-32 UNC-2B threaded holes
Max screw insertion depth: 0.20 inch
Figure 6. Mounting dimensions
Medalist 1270 Product Manual, August 1995 25
3.0 ATA interface
The drive uses an ATA-2 interface. The interface is in compliance with
ANSI ATA (AT Attachment) Interface X3T9.2/143 Rev. 4.0; SFF 8011:
ATA Timing Extension for Local Bus Attachments, Rev. 2.0 and SFF
8019: Identify Drive Data for Drives Under 8 GB. This section lists the
ATA commands supported by the drive on pages 27 and 28. Commands and features with specific applications for the drive are also discussed in this section. For more information on Seagate’s implementation of the
ATA interface and commands, see the Seagate ATA Interface Manual, publication number 36111xxx.
The ATA interface consists of single-ended, TTL-compatible receivers and drivers using an asynchronous interface protocol. The drivers can sink up to 24 mA and drive a load up to 300 pF. The integrity of the ATA interface is affected by the interface cable. It is designed to support a
40-conductor, nonshielded interface cable with a maximum length of 18 inches (46 centimeters).
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.
Signal names are shown in upper-case letters. If the signal name is followed by a minus sign (–), the signal is active low. Otherwise, the signal is active high.
26
Drive
33
*34
35
36
29
30
31
32
37
38
*39
22
23
24
25
18
19
20
21
26
27
28
11
12
13
14
7
8
9
10
15
16
17
3
4
1
2
5
6
40
*Drive-to-drive signals
Drive 1
(slave)
28
34
39
NC
DD15
Ground
(removed)
DMARQ
Ground
DIOW–
Ground
DIOR–
Ground
IORDY
CSEL
DMACK–
Ground
INTRQ
IOCS16–
DA1
PDIAG–
DA0
DA2
CS1FX–
CS3FX–
DASP–
Reset–
Ground
DD7
DD8
DD6
DD9
DD5
DD10
DD4
DD11
DD3
DD12
DD2
DD13
DD1
DD14
DD0
Ground
Drive 0
(master)
28
34
39
Medalist 1270 Product Manual, August 1995
33
34
35
36
29
30
31
32
37
38
39
22
23
24
25
18
19
20
21
26
27
28
11
12
13
14
7
8
9
10
15
16
17
3
4
1
2
5
6
40
Host
Host Reset
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
Host Data Bus Bit 10
Host Data Bus Bit 4
Host Data Bus Bit 11
Host Data Bus Bit 3
Host Data Bus Bit 12
Host Data Bus Bit 2
Host Data Bus Bit 13
Host Data Bus Bit 1
Host Data Bus Bit 14
Host Data Bus Bit 0
Host Data Bus Bit 15
Ground
(No Pin)
DMA Request
Ground
Host I/O Write
Ground
Host I/O Read
Ground
I/O Channel Ready
Cable Select
DMA Acknowledge
Ground
Host Interrupt Request
Host 16 Bit I/O
Host Address Bus Bit 1
Passed Diagnostics
Host Address Bus Bit 0
Host Address Bus Bit 2
Host Chip Select 0
Host Chip Select 1
Drive Active/
Drive 1 Present
Ground
CSEL
PDIAG–
DASP–
28
34
39
Host
Figure 7. ATA interface connector pin assignments
Medalist 1270 Product Manual, August 1995 27
3.2
Command set
This section lists all of the ATA commands the drive uses. Only the commands with unique implementation for the drive are discussed in this manual. 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-related features is provided by the Small Form Factor specification, SFF-
8011 Rev 1.1, September 18, 1993.
The Set Features command and the Sleep command, described in the
Seagate ATA Interface Reference Manual, require further elaboration.
These commands are described in Section 3.2.2 and 3.2.4.
The table below lists all commands implemented in the drive. It uses the following abbreviations:
FR Features register
SC Sector Count register
SN Sector Number register
CY Cylinder register
DH Drive/Head register n This register does not contain a valid parameter for this command.
y
D
This register contains a valid parameter for this command. In the Drive/Head register, both the drive and head parameters are valid for this command.
The Drive/Head register contains a valid drive parameter for this command. The head parameter is not valid for this command.
Command name
Active and Set Idle Timer
Active Immediate
Check Idle Mode
Check Power Mode
Execute Drive Diagnostics
Format Track continued
Command code (in hex)
FB
F9
FD
98, E5
90
50
Parameters used
FR SC SN CY DH n y n n D n n n n D n y n n D n y n n D n n n n D n y n y y
28 Medalist 1270 Product Manual, August 1995 continued from previous page
Command name
Identify Drive
Idle
Idle and Set Idle Timer
Idle Immediate
Initialize Drive Parameters
Read DMA
Read Long
Read Multiple
Read Sector
Read Sector Buffer
Read Verify Sector
Recalibrate
Seek
Set Features
Set Multiple Mode
Sleep
Standby
Standby Immediate
Write DMA
Write Long
Write Multiple
Write Sector
Write Sector Buffer
1X
7X
EF
C6
99, E6
96, E2
94, E0
CA, CB
32, 33
C5
30, 31
E8
Command code (in hex)
Parameters used
FR SC SN CY DH
EC
97, E3 n n n n D n y n n D
FA n y n n D
95, F8, E1 n n n n D
91
C8, C9
22, 23
C4
20, 21
E4
40, 41 n
— n n n n n y y y y y n y n y y y y n y n y y y y n y y y y y y
D y n n y n n n n
— n n n n n n n y n n n y y y y n n y n n n n n y y y y n n y n n n n n y y y y n
D y
D
D
D
D
D y y y y
D
Medalist 1270 Product Manual, August 1995 29
3.2.1
Identify Drive command (EC
H
)
The Identify Drive parameters for the drive are listed in the table below.
The Seagate ATA Interface Reference Manual, publication number
36111xxx, describes the Identify Drive command in detail.
Word
0
3
4
1
2
5
Description
Configuration
Default cylinders
Reserved
Default heads
Bytes per track
Bytes per sector
6
7–9
Default sectors per track
Vendor-unique
10–19 Serial number
20 Buffer type
21
22
Buffer size (number of 512-byte sectors)
ECC bytes (R/W
Long)
23–26 Firmware revision
27–46 Model number
Value
047A
H
0400
H
Disc transfer rate
> 10 Mbytes per second
0040
H
Fixed drive
0020
H
Spindle motor control option implemented
0010
H
Head switch time
> 15
µ sec
0008
H
Not MFM encoded
0002
H
Hard sectored
2,485
0
16
8EBC
H
(36540 decimal)
(unformatted)
244
H
(580 decimal)
(unformatted)
63
0000
0200
H
Drive-unique: 20 ASCII characters
0003
H
H
0004
H
Multisector with caching
Drive-dependent: 8 ASCII characters
Drive-dependent: 40 ASCII characters continued
30 Medalist 1270 Product Manual, August 1995 continued from previous page
Word
47
48
49
50
51
52
65
Description
Maximum Sectors per interrupt per R/W
Multiple command
Double word I/O
Value
8010H R/W Multiple supported;
16 sectors per block
Capabilities
Reserved
PIO timing mode
0000
H
Not supported
0B01
H
IORDY, DMA, LBA supported
0000
H
0200
H
DMA timing mode
Current valid
0207
H
Multiword DMA mode 2 supported
0003
H
, 54–58, 64–70 valid 53
54 Current cylinders
55 Current heads
56 Current sectors per track
57–58 Current sectors
59 Current multiple mode
60–61 LBA total sectors
62 Single-word DMA
63
64
Multiword DMA
Advanced PIO
2,485
16
63
2,504,880
0000
H
2,505,528
0000
H
No modes are active; no modes are supported.
0107
H
Mode 0 is active; modes
0 and 1 are supported.
0003
H
Modes 3 and 4 are
supported.
120 nsec
66
67
Minimum multiword
DMA transfer per word
Recommended multiword DMA transfer per word
Minimum PIO transfer without
IORDY
120 nsec
200 nsec
Medalist 1270 Product Manual, August 1995 31
Word
68
Description
Minimum PIO transfer with IORDY
69–127 Reserved
128–159 Seagate-reserved
160– 255 Reserved
120 nsec xxxx
H xxxx
H xxxx
H
Value
3.2.2
Set Features command (EF
H
)
The Set Features command (command code EF
H
) allows the user to enable and disable the multisegmented cache features and to identify the transfer modes the drive uses. The multisegmented buffer consists of Read Look-ahead and write-immediate and write-merging features.
The table below lists the features supported by the drive. The features that are set to default by the factory are indicated in the Feature column.
To use the command:
1. Write the Feature value to the Features register.
2. Write the Set Features command to the command register.
Note. If the value in the Features register is not supported or is invalid, the drive posts an Aborted Command error.
At power-on or after a hard reset, the feature selections are restored to the factory-default values.
The following table shows alterable features supported by the drive.
Values that are preset at the factory are indicated as default in the feature description.
Feature Value Feature
02
H
55
H
82
H
AA
H
03
H
Enable write immediate and write merging (default)
Disable cache
Disable write immediate and write merging
Enable cache (default)
Set transfer mode
32 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.
H
(Set Data Transfer mode) to the Features register.
2. Write a transfer types value to the Sector Count register. The upper 5 bits of this value define the type of data transfer, and the low order 3 bits encode the mode value. The following table identifies allowable transfer types values:
Data transfer mechanism
Mechanism name
Mode
value
PIO Transfer Mode (default:
Set PIO Mode 2)
PIO Transfer Mode:
Set PIO Mode 2
2
2
PIO Flow Control Transfer
Mode: Set PIO Mode = 0
PIO Flow Control Transfer
Mode: Set PIO Mode = 1
PIO Flow Control Transfer
Mode: Set PIO Mode = 2
PIO Flow Control Transfer
Mode: Set PIO Mode = 3
PIO Flow Control Transfer
Mode: Set PIO Mode = 4
Multiword DMA Mode
Multiword DMA Mode
Multiword DMA Mode
Reserved
0
1
2
3
4
2
—
0
1
Transfer types value
Data
Upper 5 bits
Lower 3 bits
00000
00000
00001
00001
00001
00001
00001
00100
00100
00100
01000
000
001
000
001
010
011
100
000
001
010 nnn
If the drive does not support a commanded mode, the drive returns an
Aborted Command error.
Medalist 1270 Product Manual, August 1995 33
If the drive receives a Set Features command with a mechanism and mode value of 0000 0001 and the drive supports disabling of IORDY, then the drive sets its default PIO transfer mode and disables IORDY.
3.2.3
Standby timer timeout period
The Idle command and Standby command Sector Count registers are used to activate the Standby timer. The host can enable the Standby timer by placing a value in the sector-count register of the 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.
Sector Count Register contents Corresponding timeout period
0 (0
H
)
1–12 (1
H
–C
H
)
13–240 (D
H
–F0
H
)
241–251 (F1
H
–FB
H
)
252 (FC
H
)
253 (FD
H
)
254 (FE
H
)
255 (FF
H
)
Timeout disabled value = 60 seconds
(value * 5) seconds
(value – 240) * 30) minutes
21 minutes
8 hours
Reserved
21 minutes 15 seconds
The drive is shipped with the Standby timer disabled.
3.2.4
Sleep command (99
H
, E6
H
)
This command performs the same function as the Standby Immediate command (94
H
, E0
H
).
Medalist 1270 Product Manual, August 1995 35
Appendix. Timing diagrams
Without IORDY, the drive operates at programmed I/O timing specifications, as shown below.
Address valid
DIOR
−
and DIOW
−
Write data valid
Read data valid
IOCS16
−
T7
T1
T2
T0
T5
T3
T6
T4
T9 T8
Figure 8. Programmed I/O timing without IORDY
Time Description
T0 Cycle time
T1 Drive address (CS1FX–, CS3FX–,
DA0, DA1 and DA2) valid and
DIOR– and DIOW setup
T2 DIOW– or DIOR– pulse width
T3 DIOW– data setup
T4 DIOW– data hold
T5 DIOR– data setup
T6 DIOR– data hold
T7 DIOW– or DIOR– to address valid hold
T8 DIOW– false to write data hold
T9 DIOR– false to read data hold
Min
200 nsec
30 nsec
80 nsec
30 nsec
15 nsec
20 nsec
5 nsec
—
—
10 nsec
Max
—
—
—
—
—
—
40 nsec
30 nsec
36 Medalist 1270 Product Manual, August 1995
When using IORDY, the drive operates at programmed timing specifications, as shown below.
Address valid
IOCS16
−
DIOR
−
or DIOW
−
IORDY
Write data valid
Read data valid
T1
T2
T3 T5
T4
T0
Figure 9. Programmed I/O timing with IORDY
T7
T6
T8
T9
T10 T11
Time Description
T0 Cycle time
T1 Address valid until IOCS16– is asserted
T2 Drive address (CS1FX–, CS3FX–,
DA0, DA1 and DA2) valid before DIOR– or DIOW– setup
T3 IORDY setup time
DIOW– or DIOR– pulse width (8-bit)
T4
DIOW– or DIOR– pulse width (16-bit)
Min
120 nsec
—
25 nsec
—
70 nsec
70 nsec
T5
T6
T7
T8
T9
T10
T11
IORDY pulse width
DIOW– data setup
DIOR– data setup
DIOR– data hold
DIOW– data hold
DIOW– or DIOR– to address valid hold
Address valid until IOCS16– is negated
—
20 nsec
20 nsec
5 nsec
10 nsec
5 nsec
—
Max
—
30 nsec
—
—
—
—
1,250 nsec
—
—
—
—
—
25 nsec
Medalist 1270 Product Manual, August 1995 37
The drive operates at multiword DMA mode 2 timing specifications, as shown below.
DMARQ
DMACK
−
DIOR
−
or DIOW
−
Read data valid
Write data valid
TI
TE
TG
TF
TH
TD
T0
TK
Figure 10. Multiword DMA timing
TL
TJ
Time
T0 Cycle time
Description
TD DIOW– or DIOR– pulse width (16-bit)
TE DIOR– data access
TF DIOR– data hold
TG DIOW– data setup
TH DIOW– data hold
TI DMACK– to DIOR– or DIOW– setup
TJ DIOR– or DIOW– to DMACK– hold
TK
R
DIOR– negated pulse width
TK
W
DIOW– negated pulse width
TL
R
DIOR– to DMARQ delay
TL
W
DIOW– to DMARQ delay
Min
120 nsec
70 nsec
—
5 nsec
20 nsec
10 nsec
0 nsec
5 nsec
25 nsec
25 nsec
—
—
Max
—
—
—
—
—
—
—
—
—
—
35 nsec
25 nsec
Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, California 95066, USA
Publication Number: 36316-001, August 1995, Printed in USA
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Table of contents
- 9 Introduction
- 10 Quick specification chart
- 13 1.0 Specifications
- 13 1.1 Formatted capacity
- 13 1.1.1 528-Mbyte capacity barrier
- 14 1.2 Standard configuration
- 14 1.3 Dual-drive emulation configuration
- 14 1.4 Physical organization
- 15 1.5 Functional specifications
- 15 1.6 Physical dimensions
- 16 1.7 Seek time
- 16 1.7.1 Multisegmented cache buffer
- 17 1.8 Start/stop time
- 17 1.9 Typical power-up and power-down sequence
- 17 1.9.1 Power-up sequence
- 18 1.9.2 Power-down sequence
- 18 1.10 Auto-park
- 18 1.11 Power specifications
- 18 1.11.1 Power management
- 20 1.11.2 Power consumption
- 20 1.12 Input noise
- 20 1.13 Environmental specifications
- 20 1.13.1 Ambient temperature
- 21 1.13.2 Temperature gradient
- 21 1.13.3 Altitude
- 21 1.13.4 Relative humidity
- 21 1.14 Shock and vibration
- 22 1.15 Acoustics
- 22 1.16 Reliability
- 22 1.17 Agency listings
- 22 1.18 FCC verification
- 25 2.0 Configuring and mounting the drive
- 25 2.1 Handling and static-discharge precautions
- 26 2.2 I/O cable and connector
- 26 2.3 Power connector
- 27 2.4 The options jumper block (J8)
- 27 2.4.1 Master/slave configuration
- 27 2.4.2 Dual-Drive emulation
- 30 2.4.3 Remote LED
- 30 2.4.4 Cable-select
- 31 2.5 Mounting the drive
- 33 3.0 ATA interface
- 33 3.1 ATA Interface connector pin assignments
- 35 3.2 Command set
- 41 3.2.3 Standby timer timeout period
- 43 Appendix. Timing diagrams