A - 1 3 0 A T AREAL
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 2.5"/SUPERSLIMLINE Cylinders 1453| 856| |
Capacity form/unform 131/ MB Heads 2| 5| |
Seek time / track 15.0/ 3.0 ms Sector/track | 60| |
Controller IDE / AT Precompensation
Cache/Buffer 32 KB Landing Zone
Data transfer rate 1.500 MB/S int Bytes/Sector 512
MB/S ext
Recording method RLL 1/7 operating | non-operating
-------------+--------------
Supply voltage 5 V Temperature *C 5 55 | -40 60
Power: sleep 0.1 W Humidity % 8 80 | 8 80
standby 0.2 W Altitude km -0.061 3.048| -0.061 12.192
idle 1.6 W Shock g 10 | 100
seek 3.1 W Rotation RPM 2981
read/write 2.2 W Acoustic dBA 35
spin-up 4.8 W ECC Bit 88,REED SOLOMON
MTBF h 100000
Warranty Month
Lift/Lock/Park YES Certificates CSA,TUV,UL1950
**********************************************************************
L A Y O U T
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AREAL A-130/A-260 TECHNICAL MANUAL REV. 2.0, JULY 1, 1993
+---------------------------------------------------------+
| |
| |XX44
| |XX
| PCBA SIDE |XX I
| |XX N
| |XX T
| |XX E
| |.X R
| |XX F
| |XX A
| |XX C
| |XX E
| |XX
| |XX
| | 2
| |XXJP1
| |XX50
+---------------------------------------------------------+
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J U M P E R S
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AREAL A-130/A-260 TECHNICAL MANUAL REV. 2, JULY 1, 1993
Jumper Setting
==============
x = Factory default configuration
JP1 Master/Slave Configuration
-------------------------------
Interface Pins 47 and 48
OPEN Master
CLOSED Slave
**********************************************************************
I N S T A L L
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AREAL A-130/A-260 TECHNICAL MANUAL REV. 2.0, JULY 1, 1993
Notes on Installation
=====================
Recommend Mounting Configuration
--------------------------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
| | | | | |
+---------------------+ | +-----+ +-----+ |
+-+-----------------+-+ +--+ +--+
| |
| |
+-----------------+
The drive is designed to be used in applications where the unit may
experience extreme levels of both shock and vibration. There are no
limits on mounting orientation and mounting clearance is not
required. Maximum insertion length of the 3 mm x .5 screws is 0.15"
(3.81 mm).
Physical Connection - AT Interface
----------------------------------
Both power and control signals are supplied to the drive through a
single 44 pin cable. Please note that separate power is supplied to
the logic and motor circuits to minimize noise coupling.
Maximum length of this 44 pin cable is 18 inches (457 mm) since it is
TTL driven. Two drives may be daisy chained on this cable, however,
the cable remains restricted to 18 inches.
Recommended mating connectors are as follows:
+-------------------+-------------+---------+-------------------+
|Connector Style | 3M |Dupont | Elco |
+-------------------+-------------+---------+-------------------+
|Flex Cable | N/A |86456-044|N/A |
+-------------------+-------------+---------+-------------------+
|Ribbon Cable | N/A |N/A |20-8394-2044-04-101|
+-------------------+-------------+---------+-------------------+
|PCBA Straight | N/A |86455-044|20-8390-2044-00-101|
+-------------------+-------------+---------+-------------------+
|PCBA Rigth Angle | | | |
|Areal Org. Height |150250-5122TH|N/A |N/A |
|MCC Spec Height |150250-5022TH|88333-044|20-8390-2044-04-101|
+-------------------+-------------+---------+-------------------+
Electrical Description - AT Interface
-------------------------------------
All signal levels are TTL compatible. A logic "1" is from 2.0 volts
to 5 volts. A logic "0" is from 0.0 volts to 0.7 volts.
The interface between the drive adapter and the drive is termed the
"Host Interface". The set of registers in the I/O space of the Host
is known as the "Task File".
All signals on the Host Interface have the prefix Host. All negativ-
ely active signals are prefixed with a "-" designation. All positiv-
ely signals are prefixed with a "+" designation. Signals whose source
is the Host are "outbound" and those whose source is the drive are
"inbound".
+------+-------------------+------+----------------+
| Pin | Signal | Pin | Signal |
+------+-------------------+------+----------------+
| 01 | -Host Reset | 02 | Gnd |
| 03 | +Host Data 7 | 04 | +Host Data 8 |
| 05 | +Host Data 6 | 06 | +Host Data 9 |
| 07 | +Host Data 5 | 08 | +Host Data 10 |
| 09 | +Host Data 4 | 10 | +Host Data 11 |
| 11 | +Host Data 3 | 12 | +Host Data 12 |
| 13 | +Host Data 2 | 14 | +Host Data 13 |
| 15 | +Host Data 1 | 16 | +Host Data 14 |
| 17 | +Host Data 0 | 18 | +Host Data 15 |
| 19 | Gnd | 20 | Key |
| 21 | +DREQ | 22 | Gnd |
| 23 | -Host IOW | 24 | Gnd |
| 25 | -Host IOR | 26 | Gnd |
| 27 | -IOCHRDY | 28 | Not Connected |
| 29 | -DACK | 30 | Gnd |
| 31 | +Host IRQ | 32 | -Host IOCS16 |
| 33 | +Host Address 1 | 34 | -Host PDIAG |
| 35 | +Host Address 0 | 36 | +Host Address 2|
| 37 | -Host CS0 | 38 | -Host CS1 |
| 39 | -Host Active/Slave| 40 | Gnd |
| 41 | +5 Volt Logic | 42 | +5 Volt Motor |
| 43 | Gnd | 44 | +AT -XT |
+------+-------------------+------+----------------+
Cabling
-------
All 2.5 inch AT/IDE interface drives use a 44 pin male connector that
incorporates power, control, and data signals. This configurations
differs from the 3.5 inch IDE drives which employ a 40 pin signal
connector and separate 4 pin power connector. Therefore, if you are
replacing an existing 3.5 inch drive and are faced with a 40 pin
connector, you will need an adapter card, such as the one shown
below. If your computer is a laptop, a 44 pin connector should be
mounted on the motherboard.
Since power and ground are present at the interface connector, damage
could be induced by offset or upside down connection. Please ensure
that pin 20 of your system's female connector is properly keyed.
Adapter Board
-------------
GND +5VDC
+----+-++
|O O O O|
++ +-----+-+
|+- Pin 44 | ++
|+----------------+ +------++ Pin 40
|+-------------------++-----++
|+--------------------++----++
|+---------------------++---++
|+----------------------+
||
|| ||
|+-----------------------+
++Pin 1 +--++ Pin 1
++
Functional Description
----------------------
The A130/260 contains all necessary mechanical and electronic parts
to interpret control signals, position the heads, read and write
data, and provide a contaminant free environment for the heads and
disks.
Air Filtration System
---------------------
Inside the HDA, air is recirculated through a .3 micron filter,
providing a clean environment for the recording heads and disks.
Drive Mechanism
---------------
A brushless DC motor rotates the spindle at 2981 RPM. Back EMF of the
motor is used to quickly stop the spindle when power is removed.
Read/Write Heads and Disks
--------------------------
Data is recorded on a single 65 mm diameter glass disk using two 3370
type thin film heads.
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F E A T U R E S
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AREAL A-130/A-260 TECHNICAL MANUAL REV. 2.0, JULY 1, 1993
Introduction
------------
Areal Models A130 and A260 are 2.5 inch, high capacity, ruggedized,
high performance, low power, low profile disk drives. By design,
they are ideal for notebook, laptop, or portable applications.
Both incorporate the IBM PC-AT/XT Task File control logic and
requires only chip select decode logic to allow bus connection. This
logic is typically embedded in your computer motherboard.
Key Features
------------
- Automatic Microprocessor Controlled Diagnostics
- Buffer Size 32 KB or 64 KB
- Embedded Servo System with DSP Control
- Extremely Low Power Requirement
- Internal Air Filtration System
- Lightweight at Less than 5 Ounces
- Programmable Low Power Modes
- Reed Solomon "Correction on the Fly"
- Soft "Constant Density" Recording Method
- 100 G Non-Operation Shock Tolerance
Error Correction
----------------
The A130/260 employs a 88 bit ECC polynomial for Data Field error
detection and correction, plus a 16 bit CRC code for ID Field error
detection. One 31 bit burst or two 11 bit bursts can be corrected on
the fly.
Seek Time
---------
+----------------------------------+--------+
|Track-to-Track msec. typ. | 3 |
+----------------------------------+--------+
|Average msec. typ. | 15 |
| msec. max. | 22 |
+----------------------------------+--------+
|Latency msec. avg. | 10.1 |
+----------------------------------+--------+
Formatting
----------
Once the drive has been partitioned, DOS requires that it be format-
ted. Formatting checks for defective sectors (and deallocates them if
necessary) and builds the FAT (file allocation table). Make sure to
use the "/s" option so that your hard drive will be bootable.
Example: type "FORMAT C:/S". Format will only recognize hard drives
that have valid DOS partitions, therefore FDISK must precede
formatting.
If an "Invalid Drive Specification" error is reported, the drive has
not successfully been partitioned. Please run FDISK once more.
Setup Table Alteration
----------------------
Whenever a peripheral device is changed or assed, your computer's
CMOS table may require modification. This table is typically
accessed at power on by pressing the "Del" key, or by running the
"Setup" program.
Once inside this setup program, you will be prompted for various
parameters, but only need to specify the number of heads, sectors,
and cylinders. Other variables such as write current, landing zone,
etc., are determined by Areal engineering during the design phase
and are hard coded into the drive. The A130 is most efficient when
specified as a 5 head, 60 sector, 856 cylinder device. These exact
parameters may not be available as an existing drive type. If this
is the case, please locate the user definable BIOS entry (typically
47 or 48) and enter the parameter listed above. From these
parameters, you can calculate total capacity of the A260 for example
as 856 x 10 x 60 x 512 = 262,963,200 bytes, however, even on a
freshly formatted disk this total capacity cannot be used by the
user, since some data space is used by DOS for FAT tables, directory
space, etc.
Most programs report capacity in this '262 million byte' format,
however, some programs such as FDISK still use the old standard of
'megabytes'. In the megabyte measurement, total byte capacity is
devided by 1.024 x 1.024, reducing the reported capacity to 250.781
megabytes.