Samsung WA31273A User manual

Technical Manual
3.5”Hard Disk Drives
Winner 3A / 2A
WA31273A / WA32543A
WA33203A / WA31083A
WA32163A / WA32162A
FEBRUARY,1998(REV.D)

Winner 3A
WA31273A / WA32543A / WA33203A
WA31083A / WA32163A
Winner 2A WA32162A
OEM Technical Manual
This TECHNICAL MANUAL may contain some technical inaccuracies or
typographical errors. Changes are periodically made to the information herein,
these changes will be incorporated in new editions of this publication. SAMSUNG
may make improvements and/or changes in the product(s) described in this
publication at any time.
(c) Copyright SAMSUNG ELECTRONICS CO., LTD. 1997. All rights reserved.
Requests for technical information about this product to SAMSUNG Electronics,
Storage System Division, 94-1 IM SOO-DONG, KUMI CITY, KYUNG BUK,
KOREA.
Trademark Acknowledgments
PC-AT and PC-XT are registered trademarks of International Business Machines
Corporation, Microsoft is a U.S. registered trademark and MS-DOS (DOS) and
Windows are registered trademarks of Microsoft Corporation. UNIX is a
registered trademark of AT&T, Bell Laboratories. All other product names used
in this publication are for identification purposes only and may be trademarks of
their respective companies.

WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 1-1
Chapter 1
SCOPE
This chapter gives an overview of the contents of this manual, including the intended user,
manual organization, terminology and conventions. In addition, it provides a list of other
references that might be helpful to the reader.
1-1 User Definition
The Winner 3A WA31273A / WA32543A / WA33203A / WA32163A / WA31083A, Winner 2A
WA32162A technical manual is intended for the following readers:
•Original Equipment Manufacturers (OEMs)
•Distributors
1-2 Manual Organization
This manual provides information about installation, principles of operation, and interface
command implementation. It is organized into the following chapters:
•Chapter 1 - Scope
•Chapter 2 - Overall Description
•Chapter 3 - Specifications
•Chapter 4 - Installation and Operation
•Chapter 5 - Disk Drive Operation
•Chapter 6 - AT Interface and ATA Commands
•Chapter 7 - Maintenance
In addition, this manual contains a glossary of terms to help you understand important
information.

Scope
1-2WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A
1-3 Terminology and Conventions
The abbreviations listed below are used in this manual
µinches Microinches(10-6 inches)
µsMicroseconds
BPI Bits per inch
dB Decibels
FCI Flux changes per inch
GB Gigabytes
Hz Hertz
Kbytes Kilobytes
lbs Pounds
MMeter
mA Milliampere
MB Megabytes
Mbit/s Megabits per second
Mbytes/s Megabytes per second
MHz Megahertz
mil Millinches
ms Milliseconds
mV Millivolts
ns Nanoseconds
RPM Rotations per minute
TPI Tracks per inch
VVolts
WWatts
This manual uses the following convention:
• Computer Message
Computer message refers to items you type at the computer keyboard. These items are listed
in all capitals in Courier New font. For example:
FORMAT C:/S
•Commands and Messages
Interface commands and messages sent from the drive to the host are listed in all capitals. For
example:
READ CONFIGURATION
WRITE LONG

Scope
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 1-3
•Parameters
Parameters are given as initial capitals when spelled out and as all capitals when abbreviated.
For example:
Prefetch Enable : PE
Cache Enable : CE
•Names of Bits and Registers
Bit names and register names are presented in initial capitals. For example:
Host Software Reset
Sector Count Register
•Hexadecimal Notation
Hexadecimal notation is identified using the small letter form. For example:
30h
•Signal Negation
A signal name is defined as active low is listed with a dash character following the signal. For
example:
RD-
•Notes
Notes are used after tables to provide you with supplementary information.
•Host
In general, the system in which the drive resides is referred to as the host.
1-4 Reference
For additional information about the AT interface, refer to:
•ATA-3 (AT Attachment 3), Revision 7B, 27 January, 1997

WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 2-1
Chapter 2
OVERALL DESCRIPTION
This chapter summarizes general functions and key features of Winner 3A WA31273A /
WA32543A / WA33203A / WA32163A / WA31083A, Winner 2A WA32162A drives, as well as
the standards and regulations they meet.
2-1 Introduction
The Samsung Winner 3A WA31273A / WA32543A / WA33203A / WA32163A /
WA31083A, Winner 2A WA32162A 3.5 inch disk drives are low cost, high capacity, high
performance random access devices which use non removable 3.5 inch disk(s) as storage
media. The disk is used of thin film metallic media technology for enhanced
performance. Each disk surface employs one movable head to access the data tracks. The
formatted capacity is 1.27, 2.54, 3.2, 2.16, 1.08, and 2.16 gigabytes of storage, respectively.
The Winner 3A WA31273A / WA32543A / WA33203A / WA32163A / WA31083A,
Winner 2A WA32162A drives include the AT controller embedded in the disk drive PCB
electronics. The drive's electrical interface is compatible with the mandatory, optional
and vendor specific commands.
Drive size conforms to the industry standard 3.5 inch form factor. The interface
connectors are the standard 40 pin for AT Interface and 4 pin for DC power supplies.
High capacity is achieved by using Advanced Thin Film Inductive head and PRML
(Partial Response Maximum Likelihood) recording method. This method can increase
capacity by increasing the areal density of the drive..
High performance and low cost are achieved through the use of a rotary voice coil
actuator and an embedded servo system. Embedded servo technology uses special
information recorded on each data cylinder to maintain position accuracy. This
technique assures recording head position accuracy in read or write operations at all
temperatures.
The heads, disk and actuator housing is environmentally sealed. Air circulates within
the HDA through a non-replaceable recirculating filter to ensure the maintenance of a
contamination free disk and actuator environment.

Overall Description
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 2-2
2-2 Key features
Key features of the Winner 3A WA31273A / WA32543A / WA33203A / WA32163A /
WA31083A, Winner 2A WA32162A hard disk drives include:
•Formatted capacity of 1.27, 2.54, 3.2, 2.16, 1.08, 2.16 Gbytes respectively.
•Low-profile, 1-inch height form factor
•11 msec average seek time
•High accuracy rotary voice coil actuator with embedded sector servo
•Fast ATA-3/E-IDE interface
•Power management for "Green PC"
•ATA standard PIO Mode 0-4/DMA Mode 0-2
•Supports for both CHS and LBA Addressing mode
•Supports for all logical geometries as programmed by the host
•Proprietary 128K read look-ahead cache with a segmented buffer and write stacking
capability
•1:1 interleave on read/write operation
•Transparent media defect mapping
•High performance in-line defective sector skipping
•Automatic error correction and retries
•Optimized 144-bit ECC with triple burst on-the-fly(OTF) correction
•Ability to daisy-chain two drives on the interface
•Automatic magnet latch achieving zero power consumption
•PRML Read channel
•Pseudo Contact Recording, Thin Film Inductive heads

Overall Description
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 2-3
2-3 Standards and regulations
The Winner 3A WA31273A / WA32543A / WA33203A / WA32163A / WA31083A,
Winner 2A WA32162A depends upon its host equipment to provide proper power and
environment to achieve optimum performance and compliance with applicable industry
and governmental regulations. Special attention has been given in the areas of safety,
power distribution, shielding, audible noise control, and temperature regulation.
The Winner 3A WA31273A / WA32543A / WA33203A / WA32163A / WA31083A,
Winner 2A WA32162A hard disk drives satisfy the following standards and
regulations :
•Underwriters Laboratory (UL) : Standard 1950. Information technology equipment
including business equipment.
•Canadian Standards Association (CSA) : Standard C22.2 No.3000-201 Information
technology equipment including business equipment.
•Technisher Überwachungs Verein (TÜV) : Standard EN 60 950. Information
technology equipment including business equipment.
•CE
2-4 Hardware requirements
Winner 3A WA31273A / WA32543A / WA33203A / WA32163A / WA31083A, Winner
2A WA32162A hard disk drives are compatible with host computers and controllers that
are PC/AT compatible. They are connected to a PC either by:
•Using an adapter board
•Plugging a cable from the drive directly into a PC motherboard with an IDE
(Integrated Drive Electronics) interface.

WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 3-1
Chapter 3
SPECIFICATIONS
This chapter gives a detailed description of the physical, electrical, and environmental
characteristics of the Winner 3A WA31273A / WA32543A / WA33203A / WA32163A /
WA31083A, Winner 2A WA32162A hard disk drives.
3-1 Specification Summary
TABLE 3-1. Specifications
DESCRIPTION WA31273A / WA32543A /
WA33203A
WA31083A /
WA32163A
WA32162A
Number of disks 1/ 2 / 3 1 / 2 2
Number of R/W heads 2/ 4 / 5 2 / 4 4
Maximum recording density (BPI) 124,925 107,829 117,598
Maximum flux density (FCI) 140,541 121,308 132,298
Track density (TPI) 6,900 6,000
Data tracks per surface 6,740 5,963
Encoding method 8,9 GCR
Interface method Fast ATA-3/E-IDE
Acturator type Rotary Voice Coil
Servo type Embedded Sector Servo
Number of Cylinder Reserved 4
Maximum Data Transfer Rate(Mb/s) 107.9 92.86 86.67
Spindle speed (rpm) 5,400 ±0.1% 4,500±0.1%

Specifications
3-2WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A
3-2 Physical Specifications
TABLE 3-2. Physical specifications
DESCRIPTION WA31273A / WA32543A /
WA33203A / WA32163A /
WA31083A WA32162A
Track pitch (µinches) 154 167
Data head flying height (µinches) 0.8 1.01
Inner most data track radius (inches) 0.8413 0.8291
Outer most data track radius (inches) 1.7841 1.8090
Physical dimensions :
Length (inches)
Width (inches)
Height (inches)
Weight (lbs)
5.75
4.00
1.00
1.2
3-3 Logical Configurations
TABLE 3-3. Logical configurations
DESCRIPTION WA31273A
WA32543A
WA33203A
WA31083A
WA32163A WA32162A
Default logical mode :
Number of cylinders 2,481
4,962
6,203
2,094
4,190 4,186
Number of heads 16 16 16
Number of sectors 63 63 63

Specifications
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 3-3
3-4 Performance Specifications
TABLE 3-4. Performance specifications
DESCRIPTION WA31273A
WA32543A
WA33203A
WA31083A
WA32163A WA32162A
Seek Time (typical) :
Average seek time
Track to track seek time
Full stroke seek time
<11 msec
2 msec
<20 msec
Data Transfer Rate :
Maximum to/from media
Maximum to/from buffer
107.9 Mbits/s
16.6 Mbytes/s
92.86 Mbits/s
16.6Mbytes/s
86.67 Mbits/s
16.6Mbytes/s
Average latency 5.6 msec
Controller overhead <0.5 msec
Rotational Speed 5,400±0.1% rpm 4500±0.1% rpm
Motor spin up time (Typical) 15 sec
Motor spin down time (Typical) 7 sec
Interleave 1 : 1
Buffer size 128 KBytes
NOTES : ∗The seek time is defined as the time for the actuator to seek and settle on the
desired track with the drive operating at nominal DC input voltages and
nominal operating temperature.
∗The average seek time is determined by averaging the seek time for 1,000 seeks
of random length.
∗The spin up time is the time elapsed between the supply voltages reaching
operating range and the drive being ready to accept all commands.
∗The controller overhead is the time it takes to start a seek after the drive has been
selected.
∗The average latency time is the time needed for another 1/2 revolution after seek
completion.

Specifications
3-4WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A
3-5 Power Reguirements
TABLE 3-5. Power requirements (EX : WA32543A)
Mode Typical Current
(mA rms)
Typical Power
(Watts)
Maximum
Power (Watts)
+5 Volts +12 Volts
Spin-up 564 1195 14.4 17.06
Normal Read/Write 477 249 4.92 5.27
Idle 216 225 3.38 3.70
Random Seek 481 521 8.31 8.59
Standby 198 78 1.68 1.91
Sleep 120 78 1.34 1.52
NOTES * Random seek means seek commands with logical random location and 30%
duty cycle.
* Random read/write means a combination of random write 256 sectors
commands and random read 256 sectors command

Specifications
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 3-5
3-6 Environmental Specifications
TABLE 3-6. Environmental specifications
DESCRIPTION WA31273A / WA32543A / WA33203A /
WA32163A / WA31083A / WA32162A
Ambient Temperature :
Operating
Non-operating
Maximum gradient without
Condensation
5∼55°C
-40∼65°C
20°C/hr
Relative Humidity : (non-condensing)
Operation
Non-operation
Maximum wet bulb temperature :
operating
non-operating
8∼80 %
8∼95 %
29 °C
40 °C
Altitude (relative to sea level) :
Operating
Non-operating
-200 to 10,000 ft.
-1,000 to 40,000 ft.
Vibration (1 oct/min sweep sine) :
Operating
5-21Hz
22-400Hz
Non-operating
5-21Hz
22-500Hz
0.034"(double amplitude)
1.5 G (p-p)
0.195"(double amplitude)
8.0 G (p-p)
Shock : (1/2 sine pulse, 11ms duration)
Operation
Non-operating
10 G's
75 G's

Specifications
3-6WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A
TABLE 3-6. Environmental specifications (continued)
DESCRIPTION WA31273A / WA32543A / WA33203A /
WA32163A / WA31083A / WA32162A
Acoustic Noise (Max.Sound Pressure):
Idle
Random Read/Write
< 35 dBA
< 40 dBA
NOTE : The Winner 3A WA31273A / WA32543A / WA33203A / WA32163A / WA31083A, Winner
2A WA32162A hard disk drives can withstand levels of shock and vibration applied
to any of its three mutually perpendicular axes, as in the specifications for shock
and vibration. When packed in its shipping container, the Winner 3A WA31273A /
WA32543A / WA33203A / WA32163A / WA31083A, Winner 2A WA32162A can
withstand a drop from 90cm (5Kg/Box), onto a concrete surface - on any of its six
surfaces, three edges, and one corner. The drive can withstand vibration applied to
the container of 5-500Hz (p-p), 1.5G.

WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 4-1
Chapter 4
INSTALLATION AND OPERATION
This chapter describes how to unpack, mount, configure, and connect the Winner 3A
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A, Winner 2A
WA32162A hard disk drive. It also describes how to start and operate the drive.
4-1 Space Requirements
SAMSUNG ships the Winner 3A WA31273A / WA32543A / WA33203A / WA32163A /
WA31083A, Winner 2A WA32162A hard disk drives without a bezel. Figure 4-1 shows
the external dimensions of the drive.
Figure 4-1. Mechanical Dimensions

Installation and Operation
4-2WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A
4-2 Unpacking Instructions
(1) Open the shipping container of the Winner 3A WA31273A / WA32543A /
WA33203A / WA32163A / WA31083A, Winner 2A WA32162A
(2) Lift the packing assembly that contains the drive out of the shipping container.
(3) Remove the drive from the packing assembly. When you are ready to install the
drive, remove it from the ESD (Electro Static Discharge) bag.
CAUTION : During shipment and handling the anti static ESD bag prevents
electronic component damage due to electrostatic discharge. To avoid accidental
damage to the drive, do not use a sharp instrument to open the ESD bag.
(4) Save the packing material for possible future use.
4-3 Mounting
(1) Be sure that the system power is off.
(2) Mount the drive in a mounting slot of your system. For mounting, use six #32 UNC
screws.
CAUTION : To avoid stripping the mounting-hole threads, the maximum torque
applied to the screws must not exceed 8.0 Kg-cm (6.95 inch-pounds).

Installation and Operation
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 4-3
4-3-1 Orientation
Figure 4-2 shows the physical dimensions and mounting holes located on each side of
the drive. The mounting holes on the Winner 3A WA31273A / WA32543A / WA33203A
/ WA32163A / WA31083A, Winner 2A WA32162A hard disk drive allow the drive to be
mounted in any orientation.
Figure 4-2. Mounting Dimensions (in Millimeters)

Installation and Operation
4-4WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A
4-3-2 Clearance
The printed circuit board (PCB) is very close to the mounting holes. Do not exceed the
specified length for the mounting screw described in the Figure 4-3. The specified screw
length allows full use of the mounting-hole threads, while avoiding damage or placing
unwanted stress on the PCB.
Figure 4-3. Mounting-Screw Clearance
CAUTION : Using mounting screws that are longer than the maximum lengths
specified in Figure 4-3 voids the warranty on the Winner 3A WA31273A /
WA32543A / WA33203A / WA32163A / WA31083A, Winner 2A WA32162A.

Installation and Operation
WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 4-5
4-3-3 Ventilation
The Winner 3A WA31273A / WA32543A / WA33203A / WA32163A / WA31083A,
Winner 2A WA32162A hard disk drive operates without a cooling fan, provided the
ambient air temperature does not exceed 55ºC. Any user-designed cabinet must provide
adequate air circulation to prevent exceeding the maximum temperature.
4-4 Cable Connectors
4-4-1 DC Power Connector(J7)
The drive’s DC power connector (J7) is mounted on the back edge of the Printed Circuit
Board (PCB) see to Figure 4-4. Table 4-1 lists the pin assignments.
Table 4-1. Power Connector (J7) Pin Assignment
PIN NUMBER POWER LINE DESIGNATION
1+12V DC
2+12V Return (Ground)
3+5V Return (Ground)
4+5V DC
4-4-2 AT-Bus Interface Connector (J2)
The AT-Bus interface connector (J2) on the drive connects the drive to an adapter or an
on board AT adapter in the computer. J2 is a 40-pin Universal Header with two rows of
20 pins on 100-mil centers, as shown in Figure 4-4.
To prevent the possibility of incorrectly installing the I/F cable, the connector has been
keyed by the removal of Pin #20. The connecting cable is a 40-conductor flat ribbon
cable and the maximum cable length is 0.46m (18 inches).
For pin assignments and signal descriptions, see "AT INTERFACE and ATA
COMMANDS" in Chapter 6.

Installation and Operation
4-6WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A
Figure 4-4. DC Power Connector (J7) and AT-Bus Connector (J2)