IBM WDA L80 Manual de usuario

IBM OEM STORAGE PRODUCTS

WDA L80 & L160

FEATURES

85/171MB formatted capacity (512 bytes/sector)

AT standard interface- Integrated controller

1:1 interleave

1,7 Run-Length Limited (RLL) encoding

32KB Read Look-Ahead Buffer

Self diagnostics on power up

Automatic retry and data correction on read errors

No preventative maintenance required

Media data transfer rate: 13.3 Mbits/Sec

Closed loop actuator servo (embedded sector servo)

Rotary voice coil actuator

Automatic actuator lock

Dedicated head landing zone

Average seek time = 16mS

All axis (6 directions) mounting permitted

Performance

Media Read/Write

Data Transfer rate in Mbits/Sec. 13.3

Seek times (in mS, averaged & inc. settle)

Read Write

Track to Track 4.0 5.0

Average Length 16.0 18.5

Full Length 30.0 32.5

Spindle Speed 3600 RPM

Average Latency 8.33 mS

Power On to Drive Ready 10 Sec (ave), 31 Sec (max)

Power Off to Spindle Stop 6 Sec (ave), 12 Sec (max)

Connectors

There is a choice of 2 power connections to this drive. One DC power connector is designed to

mate with AMP part 1-480424 (using AMP pins PN 350078-4). The other (3-pin) DC power

Pin# 1 2 3 4

+5V GND GND +12V

1 2 3

+5V +12V GND

connector is designed to mate with MOLEX 5480-03 (using MOLEX pins 5479). Equivalent

connectors may be used. Pin assignments are shown below, as viewed from the end of the drive.

AT Signal Connector

The drive uses single-ended drivers and receivers. The connector is designed to mate with 3M

part 3417-7000 or equivalent.

Note: It is indented that the hard disk drive should only be in electrical contact with the

chassis of the PC at a designated set of mounting holes. Other electrical contact may degrade

error rate performance. As a result of this, it is recommended that there should be no metal

contact to the hard disk drive except at the mounting holes or the side rails into which the

mounting holes are tapped.

Option Block

Jumper Settings

Jumpers may be fitted to select the following options:

Pin Numbers

IOCHRDY active 1-2

MASTER active 3-4

(remove this jumper to make it a slave)

LED drive lines 13-14

Shipping Default Settings

11 13

JP1 JP2 JP3 JP4 JP5 JP6 JP7

CHRDYMasterPark pos.

ON ON NC NC NC NC LED

IOCHRDY is set to on (ie, jumper on pins 1-2)

Device ID is set to Master (ie, jumper on pins 3-4)

Note: LED connections, pin 13 can source up to 18mA. Pin 14 can sink up to 100mA.

Data Organization

Physical Layout WDA-L80 WDA-L160

Bytes per Sector 512 512

Total Data Sectors 167301 334602

Total Data Bytes 85,658,112 171,316,224

BIOS Capacity of Drive (MB {sectors x 512})

* *

Sectors per Track 44 44

Sectors per Cylinder 87 174

Spare Sectors per Cylinder 1 2

Numbers of Data Heads 2 4

Numbers of Disks 1 2

Logical Layout

Logical Heads 10 10

Sectors/Track 17 34

Logical Cylinders 984 984

Operating Environment

Humidity

Operating Relative 8% to 90% noncondensing

Nonoperating Relative 5% to 95% noncondensing

Wet Bulb Temperature:

Maximum Wet Bulb:

Operating 29.4 degrees Centigrade non-condensing

Non-operating 35.0 degrees Centigrade non-condensing

Elevation:

Operating Altitude -150 to 3000m

Ship/Storage Altitude -150 to 12000m

Temperature:

Operating 5 to 55 degrees Centigrade

Storage -40 to 65 degrees Centigrade

Shipping -40 to 65 degrees Centigrade

Temperature Gradient 15 degrees Centigrade per hour (maximum)

(Operating, Storage and Shipping)

Air Cooling Requirement

The host system must provide sufficient air flow across the drive to maintain the temperature at

less than 60 degrees Centigrade (measured at the center of the drives' top cover).

Operating Vibration

Due to the complexity of this subject, we recommend that users contact the Distributor to discuss

how to perform the necessary measurements if they believe this to be an area which requires

evaluation.

Nonoperating Vibration

The Drive will withstand the following continuous vibration levels with no degradation in

performance: 2 - 200Hz @ 0.5G peak acceleration (for a resonance search). Resonance points:

1.5G peak acceleration (for 15 minutes).

Operating Shock

The Drive will withstand (with no permanent damage or loss of data) a 10G half-sine wave shock

pulse of 11mS duration.

Nonoperating Shock

The Drive will withstand (with no permanent damage or loss of data) a 75G half-sine wave shock

pulse of 11mS duration.

DC Power Requirements

Nominal Supply Voltages +5 Volts +12 Volts

Maximum Ripple (0-10 MHz) 100mV p-p 200mV p-p

Voltage Supply Tolerance (Including Ripple) +/-5% +10%/-8%

Power Supply Current Amps +5 Volts +12 Volts

* Startpeak 0.5 0.93

* Idle Average 0.3 0.12 (WD-L80)

0.13 (WD-L160)

* Random R/W 0.3 0.14 (WD-L80)

0.15 (WD-L160)

Random R/W = 40% random seek +40% read/write (1 write in 10 reads) +20% idle

Signal Definition

The pin assignments of interface signal are listed as follows:

PIN Signal I/O PIN Signal I/O

01 -HRESET I 02 GND

03 HD07 I/O 04 HD08 I/O

05 HD06 I/O 06 HD09 I/O

07 HD05 I/O 08 HD10 I/O

09 HD04 I/O 10 HD11 I/O

11 HD03 I/O 12 HD12 I/O

13 HD02 I/O 14 HD13 I/O

15 HD01 I/O 16 HD14 I/O

17 HD00 I/O 18 HD15 I/0

19 GND (20) Key

21 (Resv) 22 GND

23 -HIOW I 24 GND

25 -HIOR I 26 GND

27 IORDY O 28 (Resv)

29 (Resv) 30 GND

31 HIRQ O 32 -HIOCS16 O

33 HA01 I 34 -PDIAG I/O

35 HA00 I 36 HA02 I

37 -HCSO I 38 -HCS1 I

39 -DASP I/O 40 GND

Note:

"O" designates an output from the Drive. "I" designates an input to the Drive.

"I/O" designates an input/output common.

"PWR" designates a power supply to the Drive.

"(Resv)" designates reserved pins and all of these have to be left unconnected.

Cabling

The maximum cable length from the Host system to the drive, plus the circuit pattern length inside

the Host systems, must not exceed 18 inches (45.7cm).

Interface

This data sheet describes some aspects of the host interface to ATA drives. The interface

conforms to the CAM draft proposal for an AT attachment with certain limitations described

below.

Automatic Power-Down Sequence

A hard reset will disable the automatic power-down sequence.

Format Track Alternate Sectors

The Drive does not support alternate sector locations and will ignore any descriptors whose

values are 20h (Unassign Alternate Sector) or 40h (Assign Alternate Sector), without returning an

error.

Format Track Interleave Factor

The Drive only supports an interleave factor of 1:1, and may ignore any other specified interleave,

without returning an error.

Format Track Sector Count

The drive will return an Abort error if the specified sector count is not the same as the number of

sectors per track designated by the drive in the Initialize Drive Parameters command, or default

setting as reported by Identify Drive command.

Format Track Sector Number

The drive will return an Abort error if any sector number in the format table is zero or greater

than the actual number of sectors per track, or the same sector number is used more than once in

the format table. The drive always operates with sectors numbered consecutively between one

and the number of sectors per track.

Initialize Drive Parameters

The parameters specified in the Initialize Drive Parameters command are only in effect until the

next power off, soft reset, or hard reset operation. Afterwards, the default parameters in the

Identify Drive information will be in effect.

Seek Overlap

The drive will wait for the seek to complete before interrupting the host. Therefore, no seek

overlap can occur. This will be transparent to the host except that performance may be degraded

in certain environments where the host could perform other work while waiting for seek

complete, such as multitasking operating systems.

Registers

Address Input Register Output Register

1F0h Data Data

1F1h Error Features

1F2h Sector Count Sector Count

1F3h Sector Number Sector Number

1F4h Cylinder Low Cylinder Low

1F5h Cylinder High Cylinder High

1F6h Drive/Head Drive/Head

1F7h Status Command

3F6h Alternate Status Device Control

3F7h Drive Address Not Used

The host uses the register interface to communicate to and from the drive. The registers are

accessed through the host port addresses shown.

The host should not read or write any registers when the Status Register BSY bit=1.

Electromagnetic Compatibility:

The Drive meets the following EMC requirements when installed in the user system and exercised

with a random accessing routine at maximum data rate: - United States Federal Communication

Commission (FCC) Rules and Regulations, Part 15, SubjectJ--Computer Devices, "Class B

Limits." - European Economic Community (EEC) directive #76/889 related to the control

of radio frequency interference and the Verband Deutscher Elektrotechniker (VDE)

requirements of Germany (GOP).

Command Description

The following Commands are supported by the Drive:

Data In Commands (HEX)

Identify Drive (EC)

Read Buffer (E4)

Read Long (& retry) (22)

Read Long (no retry) (23)

Read Multiple (C4)

Read Sectors (& retry) (20)

Read Sectors (no retry) (21)

Data Out Commands (HEX)

Format (50)

Write Buffer (E8)

Write Long (& retry) (32)

Write Long (no retry) (33)

Write Multiple (C5)

Write Sectors (& retry) (30)

Write Sectors (no retry) (31)

Write Verify (3C)

Execution includes the transfer of one or more 512 byte sectors of data (>512 bytes for Read

Long) from the Drive to the Host for Data In and from the Host to the Drive for Data Out

commands.

Nondata Commands

Read Verify Sectors (& retry) (40)

Read Verify Sectors (no retry) (41)

Seek (7X)

Set Multiple (C6)

Execute Drive Diagnostics (90)

Initialize Drive Parameters (91)

Set Features (EF)

Recalibrate (1X)

Execution of these commands involves no data transfer.

Mechanical Data

Dimensions

Height 19.9 +/-0.4mm

Width 101.6+/-0.4mm

Depth 146.0+/-0.6mm

Weight 410g maximum

Mounting Orientation:

The drive can be mounted in any axis (6 directions).

Note: Maximum screw lengths must not be exceeded.

146 +/- 0.6

101.6 +/- 0.4

12.5 mm +0.2 / -0 .3

16 +/-0.2

60 +/-0.1 41.6 +/-0.1

60.3 44.4

(4X) UNC 6-32

Front

Back

WARNING:

This disk drive can be damaged by Electrostatic Discharge; please follow recommended ESD

procedures before unpacking or handling the drive. Ask your Dealer for details if you need

assistance.

PACKAGING:

The drive must be protected against Electrostatic Discharge especially when being handled. The

safest way to avoid damage is to put the drive in an antistatic bag before ESD wrist straps etc, are

removed.

Drives should only be shipped in approved containers; severe damage can be caused to the drive if

the packaging does not adequately protect against the shock levels induced when a box is

dropped. Consult the dealer if you do not have an approved shipping container.

This data sheet is not a substitute for the full product specification which should be used when

detailed information is required.

Product Description data represents IBM's design objectives and is provided for comparative

purposes; actual results may vary based on a variety of factors. This product data does not

constitute a warrant. Questions regarding IBM's warrant terms or methodology used to derive

this data should be referred to your IBM representative. Data subject to change without notice.

AMP is a trademark of AMP Incorporated.

DATA MATE is a trademark of AMP Incorporated.

MOLEX is a trademark of Molex Incorporated.

NEXT is a trademark of NEXT Corporation.

Western Digital is a trademark of the Western Digital Corporation.

IBM OEM Europe

PO Box 6 Langstone Road

Havant

Hampshire

P09 ISA

United Kingdom

Telephone: (44) 705 486363

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