IBM WDA L80 Manuel utilisateur
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
1
2
3
4
5
6
7
8
9
10
11 13
14
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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