. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
U4 Family
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST32112A, ST34311A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST36421A, ST38421A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ultra ATA Interface Drives
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
U4 Family
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST32112A, ST34311A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST36421A, ST38421A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ultra ATA Interface Drives
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1999 Seagate Technology, Inc. All rights reserved
Publication Number: SG35116-001, Rev. D, June 1999
Seagate, Seagate Technology, the Seagate logo and U4 are either
trademarks or registered trademarks of Seagate Technology, 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 fro m Seagate Technology, Inc.
U4 Family Product Manual, Rev. D iii
Contents
Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1.1 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Recording and interface technology . . . . . . . . . . . . . . . . . . . . 6
1.4 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.7 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.7.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.7.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.7.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.7.4 Power-management modes . . . . . . . . . . . . . . . . . . . . . 10
1.8 Environmental tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.8.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.8.2 Temperature gradient . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.8.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.8.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.8.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.9 Drive acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.10 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . 14
1.11 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.12 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.12.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.12.2 Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . 14
1.12.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
iv U4 Family Product Manual, Rev. D
2.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . 17
2.1 Handling and static-discharge precautions . . . . . . . . . . . . . . 17
2.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.1 Master/slave configuration . . . . . . . . . . . . . . . . . . . . . . 18
2.2.2 Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.3 Ultra ATA/66 cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.1 ATA interface signals and connector pins . . . . . . . . . . . . . . 21
3.2 ATA Interface commands . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2.1 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . 23
3.2.2 Identify Drive command . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2.3 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.2.4 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . 30
U4 Family Product Manual, Rev. D v
Figures
Figure 1. Typical startup and operation current profile . . . . . . . . . . . . 9
Figure 2. Master/slave jumper settings . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 3. Mounting dimensions—top, side and end view . . . . . . . . . 20
Figure 4. I/O pins and supported ATA signals. . . . . . . . . . . . . . . . . . 22
Seagate Connfidential Review Draft - NOT FOR DISTRIBUTION
vi U4 Family Product Manual, Rev. D.
Seagate Confidential Review Draft - NOT FOR DISTRIBUTION
U4 Family Product Manual, Rev. D 1
Introduction
This manual describes the functional, mechanical and interface specifications for the U4
ST32112A. These drives provide the following key features:
•
Low power consumption
•
Quiet operation
•
10-5 msec seek time, 5-400 -RPM and 256 -Kbyte buffer for excel lent
desktop performance
•
High instantaneous (burst) data-transfer rates (up to 66.6 Mbytes per
second) using Ultra DMA mode 4
•
300 Gs nonoperating shock
•
Full-track multiple-sector transfer capability without local processor
intervention
•
State-of-the-art cache and on-the-fly error-correction algorithms
•
MR recording heads and EPRML technology, which provide the drives
with increased areal density
•
Support for S.M.A.R.T. drive monitoring and reporting
•
Support for Read Multiple and Write Multiple commands
ST38421A, ST36421A, ST34311A and the
•
Support for autodetection of master/slave drives that use cable select
(CSEL)
2 U4 Family Product Manual, Rev. D
Specification summary table
The specifications listed in this table are for quick reference. For details
on specification measurement or definition, see the appropriate section
of this manual.
Drive Specification
Guaranteed Mbytes
(×106 bytes)
Guaranteed sectors 4,225,536 8,452,080 12,596,850 16,498,944
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16 15 15 16
Default cylinders 4,192 8,944 13,330 16,368
Physical read /write
heads 1 2 3 4
Discs 1 1 2 2
Recording density
BPI (bits/inch max) 241,000
Track density
TPI (tracks/inch) 13,100
Areal density
(Mbits/inch
Spindle speed (RPM) 5,400
Internal data-transfer
rate (Mbits/sec max)
2
max) 3,179
ST32112A ST34311A ST36421A ST38421A
2,160 4,320 6,448 8,440
206
I/O data-transfer rate
(Mbytes/se c ma x)
A TA data-transfer modes
supported
Cache buffer (Kbytes) 256
Height (mm max) 26.1
Width (mm max) 102
Length (mm max) 147.0
Weight (typical) 580 grams (1.2 lb)
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–4
66.6
U4 Family Product Manual, Rev. D 3
Drive Specification
Track-to-track seek time
(msec typical) 2.0 (read), 2.75 (write)
Aver age seek time (msec
typical) 10.5 (read), 11.5 (write)
Full-stroke seek time
(msec typical) 24.0 (read), 26.0 (write)
Average latency (msec) 5.56 msec
Power-on to ready
(sec typical) 8 sec
Standby to ready
(sec typical) 7 sec
Startup current (typical):
12V (peak)
Seek power (typical) 7.0 watts
Idle mode (typical) 3.1 watts
Standby mode (typical) 0.8 watts
Sleep mode ( typical) 0.8 watts
Voltage tolerance
(including noise) 5V ± 5%, 12V ± 10%
ST32112A ST34311A ST36421A ST38421A
1.5 amps
Ambient temperature 0° to 55°C (op.), –40° to 70°C (nonop.)
Temperature gradient
(°C per hour max) 20°C
Relative humidity
(op. and nonop.)
Relative humidity
gradient 30% per hour max
Wet bulb temperature
(°C max) 29.4 (op.), 40.0 (nonop.)
Altitude, operating –61 m to 3,048 m (–200 ft to 10,000
Altitude, nonoperating –122 m to 12,192 m (–400 ft to 40,000
Shock (Gs at 2 msec)
operating
nonoperating
Vibration, operating 0.5 Gs (0 to peak, 5–350 Hz)
5% to 90% (op.)
5% to 95% (nonop.)
+
+
63 Gs
300 Gs
ft)
ft)
4 U4 Family Product Manual, Rev. D
Drive Specification
ST32112A ST34311A ST36421A ST38421A
Vibration, nonoperating 5 Gs (0 to peak, 5–350 Hz)
Drive acoustics
Sound power
Idle mode
Seek mode
Nonrecoverable read
errors 1 per 10
3.3 (typical), 3.7(max)
3.9 (typical), 4.3 (max)
13
bits read
Mean time between
failures (po wer-on hours) 400,000
Contact start-stop cycles
(25°C, 40% relative
50,000
humidity)
Service life (years) 5
U4 Family Product Manual, Rev. D 5
1.0 Drive specifications
Unless otherwise noted, all specifications are measured under ambient
conditions, at 25 °C, and no min al power. For convenie nce, the phrases
the drive
U4 ST38421A, ST36421A, ST34311A and the ST32112A.
1.1 Formatted capacity
and
this drive
are used throughout this manu al to indi cate the
Drive Model
ST38421A 8,440 16,498,944 512
ST36421A 6,448 12,596,850 512
ST34311A 4,320 8,452,080 512
ST32112A 2,160 4,225,536 512
Guaranteed Mbytes
(1 Mbyte = 10
6
bytes)
Guaranteed
sectors
Bytes per
sector
1.1.1 Default logical geometry
CHS Mode Cylinders Read/Write heads Sectors per track
ST38421A 16,368 16 63
ST36421A 13,330 15 63
ST34311A 8,944 15 63
ST32112A 4,192 16 63
LBA Mode
When addressing either drive in LBA mode, all blocks (sectors) are
consecutively numbered from 0 to
guaranteed sectors as defined above
n–1,
.
where
n is
the number of
1.2 Physical organization
Drive Model Read/Write heads (MR) Number of discs
ST38421A
ST36421A 3 2
ST34311A 2 1
ST32112A 1 1
42
6 U4 Family Product Manual, Rev. D
1.3 Recording and interface technology
Interface ATA
Recording method 16/17 EPRML
Recording density BPI (bits/inch) 241,000
Track density TPI (tracks/inch) 13,100
2
Areal density (Mbits/inch
Spindle speed (RPM) (± 0.2%) 5,400
Internal data-transfer rate
(Mbits/sec max) 206
max) 3,179
I/O data-transfer rate
(Mbytes /sec max)
Interleave 1:1
Cache buffer (Kbytes) 256
16.6 (PIO mode 4)
66.6 (Ultra DMA mode 4)
1.4 Physical characteristics
Drive Specification ST38421A, ST36421A,
ST34311A, ST32112A
Maximum height (mm)
(inches)
Maximum width (mm)
(inches)
Maximum length (mm)
(inches)
Typical weight (grams)
(pounds)
26.1
1.028
101.8
4.020
147.0
5.78
580
1.2
1.5 Seek time
Seek measurements are taken with nominal power at 25°C ambient
temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows:
•
Track-to-track seek time is an average of all possible single-track
seeks in both directions.
U4 Family Product Manual, Rev. D 7
•
Average seek time is a true statistical random average of at least 5,000
measurements of seeks between random tracks, less overhead.
•
Full-stroke seek time is one-half the time needed to seek from the first
data cylinder to the maximum data cylind er an d b ac k t o th e fi rst dat a
cylinder. The full-stroke typic al v al ue is determined by averaging 100
full-stroke seeks in both directions.
Typical seek times (msec) Read Write
Track-to-track 2.0 2.75
Average 10.5 11.5
Full-stroke 24.0 26.0
Average latency: 5.56 msec — —
Note.
These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as
track-to-track and average) are expected to meet or exceed the noted
values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure
logical seeks may produce results that vary from these specifications.
1.6 Start/stop times
Power-on to Ready (sec) 8 (typical)
Standby to Ready (sec) 7 (typical)
Ready to spindle stop (sec) 10 (typical)
1.7 Power specifications
The drive receives DC power (+5V or +12V) through a four-pin standard
drive power connector.
1.7.1 Power consumption
Power requirements for the drives are listed in the table on pag e 9.
Typical power measurements are based on an average of drives tested,
under nominal conditions, using 5.0V input voltage at 25°C ambient
temperature.
Spinup power
•
Spinup power is measured from the time of power-on to the time that
the drive spindle reaches operating speed.
8 U4 Family Product Manual, Rev. D
Seek Mode
•
During seek mode, the read/write actuator arm moves toward a
specific position o n the disc surface an d does not execute a read or
write operation. S ervo e lectron ics are ac tive. Seek mode p ower represents the worst-case power consumption, using only random seeks
with read or write latency time. This mode is not typical and is provided
for worst-case information.
Read/Write power and current
•
Read/write power is measured with the heads on trac k, based on a
16-sector write follow ed by a 32-msec delay, then a 16 -sector read
followed by a 32-msec delay.
Operating power and current
•
Operating power is measured using 40 percent random seeks, 40
percent read/write mode (1 write for each 10 reads) and 20 pe rcent
drive inactive.
Idle mode power
•
Idle mode power is measured with the drive up to spee d, with ser vo
electronics active and with the heads in a random track location.
Standby mode
•
During Standby mode , the drive a ccepts comm ands, but the drive is
not spinning, and the servo a nd read/write electronic s are in p owerdown mode.
U4 Family Product Manual, Rev. D 9
Typical Amps RMS
Power Mode Typical Watts
RMS
5V 12V
Spinup — — 1.5 (peak)
Seek (Random, no
read/write) 7.0 0.39 0.42
Operating 5.7 0.34 0.33
Idle 3.1 0.24 0.16
Standby/Sleep 0.8 0.14 0.01
1.7.1.1 Typical current profile
Figure 1 shows a typical current profile.
Current (amps)
1.2
1.0
0.8
0.6
0.4
0.2
0
Figure 1. Typical startup and operation current profile
12345678
Time (seconds)
10 U4 Family Product Manual, Rev. D
1.7.2 Conducted noise
Input noise ripple i s mea su re d a t the host system powe r su ppl y ac ross
an equivalent 80-ohm resistive load on the +12 volt line or an equivalent
15-ohm resistive load on the +5 volt line.
•
Using 12-volt power, the drive is expected to operate with a maximum
of 120 mV peak-to-peak square-wave injected noise at up to 10 MHz.
•
Using 5-volt power t he drive is ex pected to operate wi th a maximum
of 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.
Note.
Equivalent resis tance is calcu lated by dividing the nomina l voltage by the typical RMS read/write current.
1.7.3 Voltage tolerance
Voltage tolerance (including noise): 5V ± 5% and 12V ± 10%
1.7.4 Power-management modes
The drive provides programmable power management to provide greater energy efficiency . In m ost syst ems, you can control power mana gement through the system setup program. The drive features the following
power-management modes:
Power Mode Heads Spindle Buffer
Active Tracking Rotating Enabled
Idle Tracking Rotating Enabled
Standby Parked Stopped Enabled
Sleep Parked Stopped Disabled
Active mode
•
The drive is in Active mode during the read/write and seek operations.
Idle mode
•
The buffer remains enabled, and the drive accepts all commands and
returns to Active mode any time disc access is necessary.
Standby mode
•
The drive enters Standby mode when the host sends a Standby
Immediate command. If the hos t has set th e standb y timer, the drive
can also enter Standby mo de automatical ly after the drive has been
inactive for a specifia ble length of time. The standby timer delay is
established using a Standby or Idle command. In Standby mode, the
U4 Family Product Manual, Rev. D 11
drive buffer is enabled, the heads are parked and the spindle is at rest.
The drive accepts all commands and returns to Active mode any time
disc access is necessary.
Sleep mode
•
The drive enters Sleep mode after receivi ng a Sleep co mmand from
the host. In Sleep mode, the drive buf fer is disabled, the heads are
parked and the spindle is at res t. The drive l eaves Sleep m ode after
it receives a Hard Reset or Soft Reset from the host. After receiving a
reset, the drive exits Sleep mode and enters Active mode with all
current translation parameters intact.
Idle and Standby timers
•
Each time the drive performs an Active function (read, write or seek),
the standby timer is rein itialized and begins counting do wn from its
specified delay times to zero. If the standby timer reaches zero before
any drive activity is re q ui red, th e d ri v e m ake s a transition to Standby
mode. In both Idle and Standby mode, the drive accepts all commands
and returns to Active mode when disc access is necessary.
1.8 Environmental tolerances
1.8.1 Ambient temperature
Operating 0° to 55°C (32° to 131°F)
Nonoperating –40° to 70°C (–40° to 158°F)
Note.
Above 1,000 feet (305 meters), the maximum temperature is
derated linearly to 1 12°F (44°C) at 10,000 feet (3,048 meters) .
Operating ambient temperature is defined as the temperature of
the environment immediately surrounding the drive.
1.8.2 Temperature gradient
Operating/Nonoperating 20°C/hr (36°F/hour) max, without condensation
1.8.3 Humidity
1.8.3.1 Relative Humidity
Operating 5% to 90% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
12 U4 Family Product Manual, Rev. D
1.8.3.2 Wet bulb temperature
Operating 29.4°C (84°F) max
Nonoperating 40.0°C (104°F) max
1.8.4 Altitude
Operating –61 m to 3,048 m (–200 ft to 10,000+ ft)
Nonoperating –122 m to 12,192 m (–400 ft to 40,000+ ft)
1.8.5 Shock
All shock specifications assume that the drive is mounted securely with
the input shock appli ed at the drive mounting screws. Sh ock may be
applied in the X, Y or Z axis.
1.8.5.1 Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum op erating shock of 63 Gs (ba sed
on half-sine shoc k pulses of 2 msec. Shocks should not be repeated
more than two times per second.
1.8.5.2 Nonoperating shock
The nonoperating shock level that the drive can experience without
incurring physical damage or degradation in performance when subsequently put into operation is 75 Gs (based on a nonr epetitive ha lf-sine
shock pulse of 11 msec dur ation) or 300 Gs (based on a nonr epetitive
half-sine shock pulse of 2 msec duration).
1.8.6 Vibration
All vibration speci fications assume that the drive is mounted securely
with the input vibration app lied at the driv e mounting s crews. Vib ration
may be applied in the X, Y or Z axis.
U4 Family Product Manual, Rev. D 13
1.8.6.1 Operating vibration
The following table lists the maximum vibration levels that the dr ive may experience while meeting the per formance standards specifie d in this document .
5–21 Hz 0.02-inch displacement (peak to peak)
22–350 Hz 0.5 Gs acceleration (zero to peak)
351–500 Hz 0.3 Gs acceleration (zero to peak)
1.8.6.2 Nonoperating vibration
The following table lis ts the maximum nonoperating v ibration that the
drive may experience without incurring physical damage or degradation
in performance when subsequently put into operation.
5–21Hz 0.02-inch displacement (peak to peak)
22–350 Hz 5.0 Gs acceleration (zero to peak)
351–500 Hz 2.0 Gs acceleration (zero to peak)
1.9 Drive acoustics
Drive acoustics are measured as overall A-weighted acoustic sound
power levels (no pure tones). All measurements are generally consistent
with ISO document 7779. Sound power measurements were taken
under essentially free-field conditions over a reflecting plane. For all
tests, the drive was oriented with the cover facing upward.
Note.
For seek mode tests, the drive was pl aced in seek mode only.
The number of seeks per second is defined by the following
equation:
access time)
Acoustic mode Idle mode Seek mode
Sound power (bels) 3.3 (typ) 3.7 (max) 3.9 (typ) 4.3 (max)
(Number of seeks per second = 0.4 / (average latency + average
14 U4 Family Product Manual, Rev. D
1.10 Electromagnetic susceptibility
The drive operates without errors when subjected to the following:
Radiated noise ≤ 3 volt/meter, 30 Hz to 500 MHz
Electrostatic discharge * ≤ 10 KVolts
Magnetic field strength ≤ 5 Gauss
* Electrostatic discharge susceptibility is measured with the drive
mounted in a representative computer system (mounted to a
ground plane with an earth ground). Discharges are applied to the
bezel or other external surfaces on the ground plane.
1.11 Reliability
Nonrecoverable read errors 1 per 10
Mean time between failures 400,000 power-on hours
(nominal power, 25°C ambient temperature)
Contact start-stop cycles 50,000 cycles
(at nominal voltage and temperature,
with 60 cycles per hour and a 50%
duty cycle)
-13
bits read, max
Preventive maintenance None required
1.12 Agency certification
1.12.1 Safety certification
The drives are recognized in accordance with UL 1950 and CSA C22.2
(950) and meet all applicable sections of IEC950 and EN 60950 as tested
by TUV North America.
1.12.2 Electromagnetic compatibility
Hard drives that display the CE marking comply with European Unio n
requirements specified in Electromagnetic Compatibility Directives.
Testing is performed to standards EN50082-1 and EN55022-B.
Seagate uses an independent laboratory to confirm compliance with the
EC directives speci fied in t he previous p aragrap h. Drives are tested in
representative end-user systems. Although CE-marked Seagate drives
U4 Family Product Manual, Rev. D 15
comply with the dir ectives when used in the t est systems, we cannot
guarantee that all sy stems will c omply with the d irectives. Th e drive is
designed for operation inside a properly designed enclosure, with properly shielded I/O cable (if necessary) and terminators on all unused I/O
ports. Computer manuf acturers and system integrators s hould co nfirm
EMC compliance and provide CE marking for their products.
Australian C-Tick
If these models have the C-Tick marking, they comply with the Australia/
New Zealand Standard AS/NZS 3548 1995 and meet the Electrom agnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Management Agency (SMA).
1.12.3 FCC verification
These drives are intended to be contained solely within a personal
computer or similar enclos ure (n ot attac hed as a n exte rnal dev ice ). As
such, each drive is considered to be a subassembly even when it is
individually mar keted to the customer. As a subassembly, no Federal
Communications Commission verification or certification of the device is
required.
Seagate Technology, Inc. has tested this devi ce in enclosures as described above to ensure th at the total assem bly (enclo sure, disc drive,
motherboard, power supply, etc.) does comply with the limits for a Class
B computing devi ce, pursuant to Subp art J, Part 15 of the FCC rul es.
Operation with noncertified as sembl ies is likel y to resu lt in interfe rence
to radio and television re ception.
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 desig ned to provide reasonable protection against
such interference in a residential installation. However, there is no
guarantee that interfer ence will not occur in a particu lar 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 computer into a different outlet so that the receiver and
•
computer are on different branch outlets.
16 U4 Family Product Manual, Rev. D
If necessary, you s hould consult your de aler or an experienced radio/
television technician for additional suggestions. You may find helpful the
following booklet pr epared by the Federal Communications Com mission:
How to Identify and Resolve Radi o-Television Interfer ence Prob-
lems
. This booklet is available from the Supe rintendent of Doc uments,
U.S. Government Printing Office, Washington, DC 20402. Refer to publication number 004-000-00345-4.
U4 Family Product Manual, Rev. D 17
2.0 Configuring and mounting the drive
This section contain s th e s pec if ic ati ons an d in st ru cti on s fo r c on fig ur in g
and mounting the drive.
2.1 Handling and static-discharge precautions
After unpacking, and before installation, the drive may be exposed to
potential handling and electrostatic discharge (ESD) hazards. 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 at tach any c ables t o the driv e while it is i n its
static-shielded bag.
Before handling the drive, put on a grounde d wrist strap, or ground
•
yourself frequentl y by touching the metal chas sis of a com puter 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
•
The drive is extremely fragile—handle it with care. Do not press down
•
on the drive top cover.
Always rest the drive on a padd ed, anti static sur face unt il 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. Other
labels are used to seal out dirt and contamination.
only
.
18 U4 Family Product Manual, Rev. D
2.2 Jumper settings
2.2.1 Master/slave configuration
The options jumper block (J8) shown in Figure 2 is used to configure the
drive for operation. It is the 6-pin dual header between the I/O connector
and the power connecto r. Use the following settings to con figure the
drive as a master or a slave.
Master or single drive
or single-drive operation with a jumper set on pins 7 and 8.
Drive is slave
Drive is master with a non-ATA-compatible slave.
pins 5 and 6 and a jumper on pins 7 and 8. Use this jumper setting
if the drive does not work as a master with a jumper set on pins 7 and 8.
. Remove the jumper to configure the drive as a slave.
. The drive is configured at the factory for a master
Set a jumper on
only
Options jumper block (J8)
Master or single drive
Drive is slave
Master with a non-ATAcompatible slave
Cable select
1753
684
Figure 2. Master/slave jumper settings
2
U4 Family Product Manual, Rev. D 19
2.2.2 Cable-select option
Computers that use cable-select determine the master and slave drives
by selecting or dese lecting pin 2 8, CSEL, on th e interface bu s. Master
and slave drives are determined by their physical position on the cable.
To enable cable select, set a jumper on pins 5 and 6 as shown in Figure
2 on page 18. Consult your computer manual to determine whether your
computer supports this option.
2.3 Ultra ATA/66 cable
An 80-conductor 40-pin cable is required to run Ultra DMA mode 3 and
4. This cable uses even-numbered conductors connected to the ground
pins to improve signal integrity.
Note.
The drive supports both host and drive cable detection. The host
detects the 80-conduc tor cabl e by sampl ing pi n 34, CBL ID–, on
the interface bus. The drive detects the 80-conductor cable by
sensing a capacito r at the h ost si de thr ough t he CBLI D– sig nal.
The result is reported in a Fast Rise Detected bit (b it 1 3 of w or d
93 in the Identify drive parameter block).
2.4 Drive mounting
You can mount the drive in any orientation using four screws in the sidemounting holes or four screws in the bottom-mounting holes. See Figure
4 for drive mounting dimensions.
Important mounting precautions:
•
Allow a minimum clearanc e of 0.030 inches (0.76 mm) around the
entire perimeter of the drive for cooling.
•
Use only 6-32 UNC mounting screws.
•
The screws should be in serted no more than 0.200 inch (5.58 mm ) into
the bottom mounting holes and no more than 0.14 inch (5.0 mm) into
the side mounting holes.
•
Do not overtighten the mounting screws (maximum torque: 6 inch-lb).
•
Do not use a drive interface cable that is more than 18 inches long.
20 U4 Family Product Manual, Rev. D
Note: Dimensions are shown in inches (mm).
1.00 ± 0.028
(
25.4 ± 0.7)
3X 6-32 UNC-2B
max. insertion depth
0.14 (3.6) both sides
4.000
(
101.60
±
0.010
2.362
(
59.99 ± 0.25
±
)
0.010
±
0.25
5.75
(
146.1
0.230 ± 0.015
(5.84 ± 0.38
)
±
0.03
±
0.8
0.180 ± 0.015
(4.57 ± 0.38)
)
2.23 ± 0.03
(56.6 ± 0.8
)
3.72 ± 0.03
)
(94.5 ± 0.8
4X 6-32 UNC-2B
max. insertion
depth 0.22 (5.6)
1.750
±
0.010
± 0.
25)
(44.45
)
2.375 +0.030, –0.005
(60.33 +0.76, –0.13)
3X.250
± .
±
0.38)
(6.35
(both sides)
0.630 +0.030, –0.005
(16.00 +0.76, –0.13)
0.125 +0.030, –0.005
015
(3.18 +0.76, –0.13)
3.750
(95.25
4.00
(101.6
±
± 0.
±
± 0.
0.010
25)
0.02
5)
Figure 3. Mounting dimensions—top, side and end view
U4 Family Product Manual, Rev. D 21
3.0 ATA interface
These drives use the industry-standard ATA task file interface that
supports 16-bit data transfers. It supports ATA programmed input/output
(PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes
0–4. The drive also sup ports the use of the IORDY sig nal to provide
reliable high-speed data transfers.
You can use a da isy-chain ca ble to connect two drives to a single AT
host bus. For detailed info rmati on abou t the ATA interf ace, ref er to the
draft of
NCITS T13 1153D,
dard
3.1 ATA interface signals and connector pins
Figure 4 on page 22 summarizes the signals on the ATA interface
connector that the drive supports. For a detailed des cription of these
signals, refer to the
AT Attachment with Packet Interface Extension (ATA/ATAPI-4),
subsequently referr ed to as the
.
Draft ATA-4 Standard.
Draft ATA-4 Stan-
22 U4 Family Product Manual, Rev. D
Drive pin #
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
Signal name
–
1
2
3
4
5
6
7
8
9
Reset
Ground
DD7
DD8
DD6
DD9
DD5
DD10
DD4
DD11
DD3
DD12
DD2
DD13
DD1
DD14
DD0
DD15
Ground
(removed)
DMARQ
Ground
DIOW–
STOP
Ground
DIOR
–
HDMARDY
HSTROBE
Ground
IORDY
DDMARDY–
DSTROBE
CSEL
–
DMACK
Ground
INTRQ
–
IOCS16
DA1
–
PDIAG
CBLID–
DA0
DA2
–
CS0
–
CS1
–
DASP
Ground
–
Host pin # and signal description
1
Hardware Reset
2
Ground
3
Host Data Bus Bit 7
4
Host Data Bus Bit 8
5
Host Data Bus Bit 6
6
Host Data Bus Bit 9
7
Host Data Bus Bit 5
8
Host Data Bus Bit 10
9
Host Data Bus Bit 4
10
Host Data Bus Bit 11
11
Host Data Bus Bit 3
12
Host Data Bus Bit 12
13
Host Data Bus Bit 2
14
Host Data Bus Bit 13
15
Host Data Bus Bit 1
16
Host Data Bus Bit 14
17
Host Data Bus Bit 0
18
Device Data (15:0)
19
Ground
(No Pin)
20
21
DMA Request
22
Ground
23
Device I/O Write:
Stop Ultra DMA Burst
24
Ground
25
Device I/O Read:
Host Ultra DMA Ready:
Host Ultra DMA Data Strobe
26
Ground
27
I/O Channel Ready
Device Ultra DMA Ready
Device Ulta DMA Data Strobe
28
Cable Select
29
DMA Acknowledge
30
Ground
31
Device Interrupt
32
Reserved
33
Host Address Bus Bit 1
34
Passed Diagnostics
Cable Assembly Type Identifier
35
Device Address (2:0)
36
Device Address (2:0)
37
Chip Select (1:0)
38
Chip Select (1:0)
39
Drive Active/Slave Present
40
Ground
Pins 28, 34 and 39 are used for master-slave communication (details shown below).
28
34
39
Drive 0 (master)Drive 1 (slave)
28
34
39
CSEL
PDIAG
DASP–
–
Host
28
34
39
Figure 4. I/O pins and supported ATA signals
U4 Family Product Manual, Rev. D 23
3.2 ATA Interface commands
3.2.1 Supported ATA commands
The following table lis ts ATA-standard commands that the driv e supports. For a detailed description of the ATA commands, refer to the
ATA-4 Standard.
See Section 3.2.4 on page 30 for details and subcom-
mands used in the S.M.A.R.T. implementation.
Command name Command code (in hex)
ATA-standard commands
Draft
Download Microcode 92
Execute Device Diagnostics 90
Flush Cache E7
Format Track 50
Identify Device EC
Initialize Device Parameters 91
Read Buffer E4
Read DMA C8
H, C9H
Read Multip le C4
Read Sectors 20
Read Verify Sectors 40
H, 21H
H, 41H
Recalibrate 10
Seek 70
Set Features EF
Set Multiple Mode C6
H
H
H
H
H
H
H
H
H
H
H
H
S.M.A.R.T. B0
Write Buffer E8
Write DMA CA
H, CBH
Write Multiple C5
H
H
H
24 U4 Family Product Manual, Rev. D
Command name Command code (in hex)
Write Sectors 30
H, 31H
ATA-standard power-management commands
Check Power Mode 98
or E5
H
Idle 97H or E3
Idle Immediate 95H or E1
Sleep 99H or E6
Standby 96H or E2
Standby Immediate 94H or E0
ATA-standard security commands
Security Set Password F1
Security Unlock F2
Security Erase Prepare F3
Security Erase Unit F4
Security Freeze Lock F5
Security Disable Password F6
H
H
H
H
H
H
H
H
H
H
H
H
3.2.2 Identify Drive command
The Identify Drive command (command code ECH) transfer s information
about the drive to the host following power up. The data is organized as
a single 512-byte bl ock of data, whose contents are shown in the tabl e
below. All reserved bits or words should be set to zero. Parameters listed
with an “x” are dr ive-specific or vary with the state of the drive. See
Section 1 of this manual for default parameter settings.
The following commands contain drive-specific features that may not be
included in the
Draft ATA-4 Standard.
U4 Family Product Manual, Rev. D 25
Word Description Value
Configuration information:
•
Bit 15: 0 = ATA; 1 = ATAPI
0
•
Bit 7: removable media
•
Bit 6: removable controller
•
Bit 0: reserved
1 Number of logical cylinders:
ST32112A = 4,192
ST34311A = 8,944
ST36421A = 13,330
ST38421A = 16,368
0C5A
H
1060
22F0
3412
3FF0
H
H
H
H
(ST32112A)
(ST34311A)
(ST36421A)
(ST38421A)
2 ATA-reserved
3 Number of logical heads:
ST32112A = 16
ST34311A = 15
ST36421A = 15
ST38421A = 16
4 Retired
5 Retired
6 Number of logical sectors per logical
track: 63
7–9 Retired
10–19 Serial number: (20 ASCII characters,
= none)
0000
H
20 Retired
21 Retired
22 Obsolete
23–26 Firmware revision (8 ASCII character
string, padded with blanks to end of
string)
0000
H
10
H
(ST32112A)
(ST38421A)
0F
H
(ST34311A)
(ST36421A)
0000
H
0000
H
003F
H
0000
H
ASCII
0000
H
0200
H
0004
H
x.xx
26 U4 Family Product Manual, Rev. D
Word Description Value
27–46 Drive model number: (40 ASCII char-
acters, padded with blanks to end of
string)
47 (Bits 7–0) Maximum sectors per inter-
rupt on Read multiple and Write mul-
tiple (16)
48 Reserved
49 Standard Standby timer, IORDY
supported and may be disabled
50 ATA-reserved
51 PIO data-transfer cycle timing mode
52 Retired
53 Words 54–58, 64–70 and 88 are valid
54 Number of current logical cylinders
55 Number of current logical heads
56 Number of current logical sectors per
logical track
ST32112A
ST34311A
ST36421A
ST38421A
8010
H
0000
H
2F00
H
0000
H
0200
H
0200
H
0007
H
xxxx
H
xxxx
H
xxxx
H
57–58 Current capacity in sectors
59 Number of sectors transferred during
a Read Multiple or Write Multiple
command
60–61 Total number of user-addressable
LBA sectors available:
ST32112A = 4,225,536
ST34311A = 8,452,080
ST36421A = 12,596,850
ST38421A = 16,498,944
62 Retired
xxxx
H
xxxx
H
7A00H 0040
(ST32112A)
F7F0H 0080
(ST34311A)
3672H 00C0
(ST36421A)
C100H 00FB
(ST38421A)
0000
H
H
H
H
H
U4 Family Product Manual, Rev. D 27
Word Description Value
07
63 Multiword DMA active and modes
xx
H
supported (see note following this
table)
64 Advanced PIO modes supported
(modes 3 and 4 supported)
65 Minimum multiword DMA transfer
cycle time per word (120 nsec)
66 Recommended multiword DMA
transfer cycle time per word (120
nsec)
67 Minimum PIO cycle time without
IORDY flow control (240 nsec)
68 Minimum PIO cycle time with IORDY
flow control (120 nsec)
69–74 ATA-reserved
75 Queue depth
76–79 ATA-reserved
80 Major version number
81 Minor version number
82 Command sets supported
83 Command sets supported
0003
0078
0078
00F0
0078
0000
0000
0000
001E
0000
346B
4001
H
H
H
H
H
H
H
H
H
H
H
H
84 Command sets support extension
85 Command sets enabled
86 Command sets enabled
87 Command sets enable extension
88 Ultra DMA support and current mode
(see note following this table)
89 Security erase time
90 Enhanced security erase time
4000
xxxx
xxxx
xxxx
001F
0000
0000
H
H
H
H
H
H
H
28 U4 Family Product Manual, Rev. D
Word Description Value
91–92 ATA-reserved
93 Hardware Reset Value
0000
4000
H
H
(see description following this table)
94–127 ATA-reserved
128 Security Status
129–159 Seagate-reserved
160–255 ATA-reserved
0000
0001
xxxx
0000
H
H
H
H
Note. See the bit descriptions below for words, 63, 88, and 93 of the
Identify Drive data:
Description (if bit is set to 1)
Bit Word 63
0 Multiword DMA mode 0 is supported.
1 Multiword DMA mode 1 is supported.
2 Multiword DMA mode 2 is supported.
8 Multiword DMA mode 0 is currently active.
9 Multiword DMA mode 1 is currently active.
10 Multiword DMA mode 2 is currently active.
Bit Word 88
0 Ultra DMA mode 0 is supported.
1 Ultra DMA mode 1 is supported.
2 Ultra DMA mode 2 is supported.
3 Ultra DMA mode 3 is supported.
4 Ultra DMA mode 4 is supported.
8 Ultra DMA mode 0 is currently active.
9 Ultra DMA mode 1 is currently active.
10 Ultra DMA mode 2 is currently active.
U4 Family Product Manual, Rev. D 29
11 Ultra DMA mode 3 is currently active.
12 Ultra DMA mode 4 is currently active.
Bit Word 93
13 1=80-conductor cable detected, CBLID above V
0=40-conductor cable detected, CBLID below V
IH
IL
3.2.3 Set Features command
This command control s the im pl eme ntat ion of various features that th e
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, th e command is aborted . Power-on d efault has the
read look-ahead and write caching features enabled. Th e acceptable
values for the Features register are defined as follows:
02
03
H
H
Enable write cache
(default).
Set transfer mode (based on value in Sector Count register).
Sector Count register values:
00
Set PIO mode to default (PIO mode 2).
H
01
Set PIO mode to default and disable IORDY (PIO mode 2).
H
08
PIO mode 0
H
09
PIO mode 1
H
0A
PIO mode 2
H
0B
PIO mode 3
H
0C
PIO mode 4
H
(default)
20HMultiword DMA mode 0
21
Multiword DMA mode 1
H
22
Multiword DMA mode 2
H
40
Ultra DMA mode 0
H
41
Ultra DMA mode 1
H
42
Ultra DMA mode 2
H
43
Ultra DMA mode 3
H
44
Ultra DMA mode 4
H
30 U4 Family Product Manual, Rev. D
55
82
AA
Disable read look-ahead (read cache) feature.
H
Disable write cache.
H
Enable read look-ahead (read cache) feature
H
(default).
Note. At power-on, or after a hardware or software reset, the default
values of the features are as indicated above.
3.2.4 S.M.A.R.T. commands
S.M.A.R.T. provides near-term failure prediction for disc drives. When
S.M.A.R.T. is enabled, the drive monitors predetermined drive attributes
that are suscep tible to degradation over time. If self-monitor ing determines
that a failure is likely, S.M.A.R.T. makes a status report available to the
host. Not all failur es are predi ctable. S.M.A.R. T. predict ability is lim ited to
the attributes the drive can monitor . For more information on S.M.A.R.T.
commands and implementation, see the
This drive is shipped with S.M.A.R.T. features disabled. You must have
a recent BIOS or software package th at s upp orts S.M. A.R. T. to ena bl e
this feature. The table below shows the S.M.A.R.T. command codes that
the drive uses.
Code in Features
Register S.M.A.R.T. Command
D0
H
S.M.A.R.T. Read Data
Draft ATA-4 Standard.
D1
D2
D3
D4
D7
D8
D9
DA
H
H
H
H
H
H
H
H
Vendor-specific
S.M.A.R.T. Enable/Disable Attribute Autosave
S.M.A.R.T. Save Attribute Values
S.M.A.R.T. Execute Off-line Immediate
Vendor-specific
S.M.A.R.T. Enable Operations
S.M.A.R.T. Disable Operations
S.M.A.R.T. Return Status
Note. If an appropriate code is not written to the Features Register, the
command is aborted and 0x04 (abort) is written to the Error
register.
U4 Family Product Manual, Rev. D 31
32 U4 Family Product Manual, Rev. D
U4 Family Product Manual, Rev. D 33
34 U4 Family Product Manual, Rev. D
Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, California 95066, USA
Publication Number: SG35116-001, Rev. D, Printed in USA
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