D S O A - 2 0 8 1 0 IBM
Native| Translation
------+-----+-----+-----
Form 2.5"/SUPERSLIMLINE Cylinders | 1575| |
Capacity form/unform 810/ MB Heads 4| 16| |
Seek time / track 13.0/ 4.0 ms Sector/track | 63| |
Controller IDE / ATA2 FAST/ENHA Precompensation
Cache/Buffer 128 KB Landing Zone
Data transfer rate 6.625 MB/S int Bytes/Sector 512
16.600 MB/S ext PIO4
Recording method operating | non-operating
-------------+--------------
Supply voltage 5 V Temperature *C 5 55 | 65
Power: sleep 0.1 W Humidity % 8 90 | 5 95
standby 1.7 W Altitude km -0.300 3.000| -0.300 12.000
idle 2.3 W Shock g | 120
seek 2.3 W Rotation RPM 4000
read/write W Acoustic dBA 36
spin-up W ECC Bit ENHANCED, ON THE FLY
MTBF h
Warranty Month
Lift/Lock/Park YES Certificates
**********************************************************************
L A Y O U T
**********************************************************************
IBM DSOA-20540/20810/21080 JUMPER SETTING
+--------------------------------------+
| |
| |
| |
+--------Interface-------------47------+
| **********************1 **45 Jumper
| *************x********* **46 |
+------44----------------------48------+
+ +
Pin position 20 is left blank for secure connector insertion.
Pin position 47: When grounded, no spin-up at POR when open/pull up,
normal spin-up at POR.
**********************************************************************
J U M P E R S
**********************************************************************
IBM DSOA-20810/21080 NOTES ON INSTALLATION
Jumper Setting
==============
A jumper cable is available at the interface connector to determine
drive address.
Using cable selection, the drive address depends on the condition
of pin 28 of the AT interface cable. In the case when pin 28 is
ground or low, the drive is a master. If pin 28 is open or high
level, the drive is a slave.
Drive Address Setting
---------------------
A jumper is available at the interface connector to determine the
drive address.
Using Cable Selection, the drive address depends on the condition of
pin 28 of the AT interface cable. In the case when pin 28 is ground
or low, the drive is a Master. If pin 28 is open or high level, the
drive is a Slave.
---47--45+
* * * | Master
* * * | (Default setting)
---48--46+
---47--45+
* * X | Slave
* * X |
---48--46+
---47--45+
* * * | Cable Selection
* xxx |
---48--46+
---47--45+
* xxx | NEVER ATTACH A JUMPER HERE
* * * |
---48--46+
**********************************************************************
I N S T A L L
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IBM DSOA-21080/20810/20540 JUMPER SETTING
Notes On Installation
=====================
Installation direction
----------------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
| | | | | |
+---------------------+ | +-----+ +-----+ |
+-+-----------------+-+ +--+ +--+
| |
| |
+-----------------+
The drive will operate in all axis (6 directions).
Cabling
-------
The maximum cable length from the host system to tge HDD plus circuit
pattern in the host system shall not exceed 18 inches.
AT Signal Connector
-------------------
The AT Signal Connector is designed to mate with Dupont part number
69764-044 or equivalent.
NOTES
Pin position 20 is left blank for secure connector insertion.
Pin 47: When grounded, No Spin-up at POR when open/pull up, Normal
Spin-up at POR.
NOTE Interface Signals
----------------------
There are two input pins for +5 Volt power supply, "+5V Logic"
(Pin 41) and "+5V Motor" (Pin 42). Pin 41 is connected to the
internal logic circuits and Pin 42 is connected to the spindle motor
and motor drive.
It is possible to turn on and off +5V Logic by an external switch
circuit to reduce power consumption to the least possible. In this
mode, a voltage drop out due to the motor spin up current can be
reduced by connecting +5V Motor line into the system power source
directly.
If the above power management is used, all signal lines that will be
electrically active in the host system while the HDD is disconnected
from power line shall be isolated by three-state line drivers.
Internal leakage through ESD protection circuit may pull down LPUL
(least positive up level) of logic signal specification.