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IBM OEM STORAGE PRODUCTS
Deskstar DALA-3540
IBM introduced a disk drive for the desktop personal computer marketplace. Available at the
540MB capacity point with AT interface, the drive provided excellent performance and improved
reliability.
Applications
Desktop personal computers
Features Benefits
* 528, or 541MB formatted capacity * Generic popular storage capacity
(512 byte/sector), chosen by jumper.
* PIO data transfer - mode 3 * Fast interface data rate. (max 11.1Mb/s).
* 48.7 Mb/s (OD) media data rate. * Excellent performance on long records
* 32.2 Mb/s (ID) media data rate.
* Average seek time 12ms (Read). * Fast access to data.
* 4500 RPM.
* 96 KB three segment sector buffer. * Fast data retrieval in multi-tasking applications
* Read ahead caching with LFU (Least
frequently used) segment update.
* Industry standard mounting. * Ease of installation.
* The drive can be mounted with any
of its six surfaces facing down.
* Advanced ECC on the fly. * Improved data throughput.
* CHS and LBA addressing modes. * Flexibility to support most appropriate addressing.
* Power saving modes. * Reduced power consumption.
* Ideal for energy-efficient systems.
* Robust design for EMC/RFI. * Easy integration across multiple platforms.
* MR (Magneto Resistive) heads * High area density, low component count.
* No-ID(TM) sector format. * More data stored per track, increased sustained data
transfer rate.
* MTBF 350,000 hours. * Assured reliability.
Connectors
PIN 1
Back Side of Drive
Logic Card
JP7
Option Block
JP1
There is a choice of 2 power connections to this drive. One DC power connector is designed to
mate with AMP part 1-480424-0 (using AMP pins P/N 350078-4). The other (3 pin) DC power
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.
1 2 3 Pin# 1 2 3 4
+5V +12V GND +5V GND GND +12V
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 intended 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
MASTER active 1-2
SLAVE active 3-4
Cable sel 5-6
Write cache 9-10 (Disabled with jumper)
Auto re-allocation 11-12 (Disabled with jumper)
JP1 JP2 JP3 JP4 JP5 JP6 JP7
1 3 5 7 9 11 13
2 4 6 8 10 12 14
541/528 MB selection 13-14 (541MB with jumper)
Auto Reallocation Jumper
Auto reallocation jumper is checked during the initial power on reset (POR) check. Write cache
is disabled when a jumper is fitted. (+) Auto reallocation jumper position needs to be OPEN
when a user system wants to use write cache.
Note:
Auto reallocation only operates, and is mandatory, during write cache operations. Disabling
either function by jumper disables both.
Write Cache Jumper
Write cache jumper is checked during the initial POR check.
Write cache is disabled when a jumper is fitted.
Shipping Default Settings
MASTER is set to on (ie jumper on pins 1-2), 541MB capacity set. No other jumpers are fitted.
Note:
The jumper positions JP1, JP2, JP3 must not be selected concurrently.
Operating Environment
Operating Conditions
Temperature 5 to 55 degrees C*
Relative Humidity 8 to 90% non-condensing
Maximum Wet Bulb 29.4 degrees C non-condensing
Maximum Temperature 15 degrees C/Hour
Gradient
Altitude -300 to 3000m
Non-Operating Conditions
Temperature -40 to 65 degrees C (shipping)
0 to 65 degrees C (storage)
Relative Humidity 5 to 95% non-condensing
Maximum Wet Bulb
Temperature 35 degrees C non-condensing
Altitude -300 to 12,000m
Note *:
The system is responsible to provide sufficient air movement to maintain surface temperature
below 60 degrees C at the center of top cover of the drive.
Operating shock
The hard disk drive meets the following criteria while operating in respective conditions described
below. The shock test consists of ten shocks inputs in each axis and direction for total of 60.
There must be a delay between shock pulses, long enough to allow the drive to complete all
necessary error recovery procedure.
No errors
5 G, 11ms half-sine shock pulse.
No data loss, seek errors or permanent damage
10 G, 11ms half-sine shock pulse.
No data loss or permanent damage
15 G, 5ms half-sine shock pulse. 30 G, 4ms half-sine shock pulse.
Operating Vibration
Due to the complexity of this subject, we recommend that users contact the IBM technical
support group representative to discuss how to perform the necessary measurements if they
believe this to be an area which requires evaluation.
Data Organization
Logical Layout DALA DALA
-3540 -3540
Jumper 7 attached not attached
Number of Heads 16 16
Number of 63 63
Sectors/Track
Number of Cylinders 1049 1024
Sector Size 512 512
Total Customer 1,057,392 1,032,192
Usable Data Sectors
Total Customer 541MB 528MB
Usable Data Bytes
DC Power Requirements
The following voltage specifications apply at the drive power connector. Damage to the drive
electronics may result if the power supply cable is connected or disconnected while power is being
applied to the drive (No hot plug/unplug is allowed). There are inductive loads in the drive which
could cause destructively high voltage spikes on the drive if the power connection is opened.
There is no special power on/off sequencing required.
Nominal Supply Voltages +5 Volts +12 Volts
Maximum Ripple (0-10 MHz) 100mV p-p 150mV p-p
Voltage Supply Tolerance (incl. ripple) +/-5% +10%/-8%
Power Supply Current (Amps) +5 Volts +12 Volts
Start peak 0.50 0.52
Idle average 0.18 0.14
R/W average 0.49 0.17
During the drive start up and seeking, 12 volt ripple is generated by the drive (referred to as
dynamic load-ing). If several drives have their power daisy chained together, then the power
supply ripple plus other drive's dynamic loading must remain within the regulation tolerance of
+10/-8%. A common supply with separate power leads to each drive is a more desirable method
of power distribution.
To prevent external electrical noise from interfering with the drive's performance, the drive must
be held by four screws in a user system frame which has no electrical level deference at the four
screws position, and has less than +/-300 millivolts peak to peak level deference to the drive
power connector ground.
Signal Definition
The pin assignments of interface signals 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/O
19 GND (20) Key
21 DMARQ O 22 GND
23 -HIOW I 24 GND
25 -HIOR I 26 GND
27 HIORDY O 28 CSEL
29 -DMACK I 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.
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 (45.7 cm).
Interface
This data sheet describes some aspects of the host interface to ATA-2 drives. The interface
conforms to the working draft of Information Technology-AT Attachment Interface with
Extensions (ATA-2) with certain limitations described below.
Automatic Power Down Sequence
A hard reset will disable the automatic power down sequence.
Format Track
A drive will not perform a physical format. Instead, it will simply write a data pattern of all zeros
to the sectors which have been specified by the Format Track command.
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.
Write long
Write long command should be executed for the same sector after Read long command execution.
Otherwise, unexpected ECC correctable error may occur, because of the limitation of the
emulation technique to support 4 byte ECC mode which is implemented in the drive.
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 multi-tasking operating systems.
Sleep mode
During Sleep mode the drive will be activated by any command, including, but not limited to, a
soft reset.
Drive/Head Register
Bits 5 and 7 of Drive/Head Register are not written to 0. (These 2 bits are always read as '1' even
after host writes to '0'...).
Sleep/Standby/Idle Mode
When entering sleep, standby or idle mode as a result of a command, the busy bit in the status
register will remain set until the transition to the new state is complete.
The following Commands are supported by the Drive:
Commands (HEX)
Check Power Mode (E5)
Execute Drive Diagnostics (90)
Format Track (50)
Identify Drive (EC)
Idle (E3)
Idle Immediate (E1)
Initialize Drive Parameters (91)
Read Buffer (E4)
Read DMA (retry) (C8)
Read DMA (no retry) (C9)
Read Long (retry) (22)
Read Long (no retry) (23)
Read Multiple (C4)
Read Sectors (retry) (20)
Read Sectors (no retry) (21)
Read Verify Sectors (retry) (40)
Read Verify Sectors (no retry) (41)
Recalibrate (1X)
Seek (7X)
Set Features (EF)
Set Multiple (C6)
Sleep (E6)
Standby (E2)
Standby Immediate (EO)
Write Buffer (E8)
Write DMA (retry) (CA)
Write DMA (no retry) (CB)
Write Long (retry) (32)
Write Long (no retry) (33)
Write Multiple (C5)
Write Sectors (retry) (30)
Write Sectors (no retry) (31)
Write Verify (3C)
Registers
Address Input Register Output Register
1F0h Data Data
1F1h Error Features
1F2h Sector Count Sector Count
1F3h Sector Number Sector Number
*LBA bits 0-7 *LBA bits 0-7
1F4h Cylinder Low Cylinder Low
*LBA bits 8-15 *LBA bits 8-15
1F5h Cylinder High Cylinder High
*LBA bits 16-23 *LBA bits 16-23
1F6h Drive/Head Drive/Head
*LBA bits 24-27 *LBA bits 24-27
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.
Note:
* Meaning of Register contents when LBA addressing mode used.
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, Subject
J - 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).
Mechanical Data
Dimensions
Height 25.4+/-0.4mm
Width 101.6+/-0.4mm
Depth 146.0+/-0.6mm
Weight 450g maximum
Mounting Orientation
The Drive can be mounted in any axis (6 directions).
The maximum allowable penetration of the mounting screws is (*1) 3.5mm (*2) 6mm.
The recommended mounting screw torque is 6 to 10 (KgF.cm)
16
60
146
41.6
(6x) UNC 6-32 1 101.6
FRONT
(4X) UNC 6-32 2
Back Front
60.3 44.4
WARNING: This disk drive can be damaged by Electro-Static 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 Electro-Static Discharge especially when
being handled. The safest way to avoid damage is to put the drive in an anti-static 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 your IBM marketing representative if you do not have an approved shipping
container.
AMP is a trademark of AMP Incorporated.
Molex is a trademark of Molex Incorporated.
DATA MATE is a trademark of AMP Incorporated.
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 warranty. Questions regarding IBM's warranty terms or methodology used to derive
this data should be referred to your IBM OEM representative. Data subject to change without
notice.
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