S T I N G R A Y 1 8 4 2 INTEGRAL
Native| Translation
------+-----+-----+-----
Form 1.8"/SUPERSLIMLINE Cylinders | 977| |
Capacity form/unform 42/ MB Heads 3| 5| |
Seek time / track 18.0/ 8.0 ms Sector/track | 17| |
Controller IDE / AT Precompensation
Cache/Buffer 32 KB Landing Zone
Data transfer rate 1.900 MB/S int Bytes/Sector 512
4.000 MB/S ext
Recording method RLL 1/7 operating | non-operating
-------------+--------------
Supply voltage 5 V Temperature *C 5 55 | -40 70
Power: sleep W Humidity % 10 90 | 10 90
standby 0.1 W Altitude km -0.305 3.048| 12.192
idle 1.1 W Shock g 10 | 300
seek 2.1 W Rotation RPM 3571
read/write 2.1 W Acoustic dBA 34
spin-up 3.8 W ECC Bit
MTBF h 100000
Warranty Month 12
Lift/Lock/Park YES Certificates CSA,IEC435,IEC950,UL1950,U...
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L A Y O U T
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INTEGRAL STINGRAY 1842 PRODUCT MANUAL 1000706 REV. C 8-7-92
+---------------------------------------------------------+
|XX A-F +-----+Master/Slave |
| +-----+ |
|XX1 |
|XX |
|XX |
|XX |
|XX |
|XX |
|XX |
|XX |
|XX |
|XX |
|XX |
|XX |
|XX |
|XX |
+---------------------------------------------------------+
A-F = RESERVED
Pin 41/42 +5 Volts
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J U M P E R S
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INTEGRAL STINGRAY 1842 PRODUCT MANUAL 10000706 REV. C 8-7-92
Jumper Setting
==============
Customer Options
----------------
The Model 1842 can operate as a single drive or in a dual drive
configuration. As shipped from the factory, the drive is set to
indicate single drive or master. To configure a drive for use as a
second drive or slave, move either the switch or the jumper to the
position shown below.
+--xxx+
++-+-++ MASTER
+xxx--+
++-+-++ SLAVE
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I N S T A L L
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INTEGRAL STINGRAY 1842 PRODUCT MANUAL 10000706 REV. C 8-7-92
Notes On Installation
=====================
Envelope and Mounting Drawings
------------------------------
The features which allow greater shock and vibration tolerance
include the dynamically loaded heads, a fully balanced rotary
actuator, an inertial rotary actuator lock, and the low overall mass
and weight of the drive and moving masses. The drive may be mounted
in any attitude as long as it is properly retained. Adequate
ventilation must also be provided to the drive to ensure reliable
operation over the specified operating temperature range.
Read/Write and Control Electronics
----------------------------------
The Model 1842 has an integrated circuit attached to the flex
circuit connected to the actuator arm and read/write heads to provide
head selection, read preamplification, and write drive circuitry.
Drive Mechanism
---------------
The spin speed of the brushless DC drive spindle motor is maintained
by using the motor in a synchronous mode. Energy stored in the
spindle motor is used to unload the read/write heads upon drive power
down.
Head Positioning Mechanism
--------------------------
The read/write heads of the Model 1842 are directly attached to the
actuator body which also supports the moving coil. The read/write
heads are unloaded when the drive is spin down. This dynamically
ramp loaded mechanism eliminates head/media contact associated with
power cycling.
Read/Write Heads and Disks
--------------------------
Data is recorded on two 48mm diameter disks using 70% MIG heads.
Air filtration system
---------------------
The Model 1842 HDA breathers through a high efficiency ambient
filter. A high flow recirculative filter maintains a clean
environment of better than class 100 for the heads and disk
enclosure.
Physical Description
--------------------
The interface connector is a Dupont Mini Tek II, 2 mm x 2 mm (double
row) 50 position header. The first six pins consist of four reserved
factory test pins that should not be connected and two key pins that
have been removed. The host interface and power are accessed on Pins
1 (located at position seven) through Pin 44 (located at position
fifty). The part number is 86451-150 and the mating connector is
86455-150, 86455-144 or equivalent.
Electrical Description
----------------------
All signal levels are TTL compatible. A logic "1" is > 2.0 volts.
A logic "0" is from 0.00 volts to .70 volts. All logic 0 active
signals are prefixed with a "-" designation. All logic 1 active
signals are prefixed with a "+" designation. The following table
lists all of the pins on the 50 Pin Interface Connector.
+-------+------------------+-------+---------------+
| PIN | SIGNAL | PIN | SIGNAL |
+-------+------------------+-------+---------------+
| A | RESERVED | B | RESERVED |
+-------+------------------+-------+---------------+
| C | RESERVED | D | RESERVED |
+-------+------------------+-------+---------------+
| E | KEY REMOVED | F | KEY REMOVED |
+-------+------------------+-------+---------------+
| 01 | -RESET | 02 | GND |
+-------+------------------+-------+---------------+
| 03 | +DATA7 | 04 | +DATA8 |
+-------+------------------+-------+---------------+
| 05 | +DATA6 | 06 | +DATA9 |
+-------+------------------+-------+---------------+
| 07 | +DATA5 | 08 | +DATA10 |
+-------+------------------+-------+---------------+
| 09 | +DATA4 | 10 | +DATA11 |
+-------+------------------+-------+---------------+
| 11 | +DATA3 | 12 | +DATA12 |
+-------+------------------+-------+---------------+
| 13 | +DATA2 | 14 | +DATA13 |
+-------+------------------+-------+---------------+
| 15 | +DATA1 | 16 | +DATA14 |
+-------+------------------+-------+---------------+
| 17 | +DATA0 | 18 | +DATA15 |
+-------+------------------+-------+---------------+
| 19 | GND | 20 | KEY REMOVED |
+-------+------------------+-------+---------------+
| 21 | RESERVED | 22 | GND |
+-------+------------------+-------+---------------+
| 23 | -IOW | 24 | GND |
+-------+------------------+-------+---------------+
| 25 | -IOR | 26 | GND |
+-------+------------------+-------+---------------+
| 27 | +IOCHRDY | 28 | RESERVED |
+-------+------------------+-------+---------------+
| 29 | RESERVED | 30 | GND |
+-------+------------------+-------+---------------+
| 31 | +IRQA1 | 32 | +IOCS16 |
+-------+------------------+-------+---------------+
| 33 | +ADDR1 | 34 | -PDIAG |
+-------+------------------+-------+---------------+
| 35 | +ADDR0 | 36 | +ADDR2 |
+-------+------------------+-------+---------------+
| 37 | -CS0 | 38 | -CS1 |
+-------+------------------+-------+---------------+
| 39 | -DASP | 40 | GND |
+-------+------------------+-------+---------------+
| 41 | +5 VOLTS | 42 | +5 VOLTS |
+-------+------------------+-------+---------------+
| 43 | GND | 44 | RESERVED |
+-------+------------------+-------+---------------+
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F E A T U R E S
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INTEGRAL STINGRAY 1842 PRODUCT MANUAL 10000706 REV. C 8-7-92
Introduction
------------
The Int gral Model 1842 is a 1.8 inch ruggedized high performance
disk drive optimized for an IBM PC AT compatible notebook or palmtop
computer. The Model 1842 contains an on-board controller that
requires a simplified adapter board for interfacing to an AT
compatible bus.
Key Features
------------
- 1.8 inch form factor
- Unique ramp loading mechanism for loading and unloading the disk
heads during power downs and periods of inactivity.
- User invoked low power and power down modes for power sensitive
applications.
- High performance rotary voice coil actuator with embedded servo
system.
- Automatic actuator lock to protect against rotary shock.
- On board controller with a single connector for AT interface and
power. Additionally, th einterface supports master/slave protocol.
- 32K buffer cache with look ahead read.
- Automatic error detection and correction.
Diagnostic Routines
-------------------
Upon power up the microprocessor circuitry of the Model 1842 performs
diagnostics. If an error is detected the drive will not come ready.
Translate Mode
--------------
Since the model 1842 does not have the same number of sectors on
all cylinders, the drive always functions in the translate mode. Upon
initial power up, the drive will emulate a drive type 17. Drive type
17 is defined as having 5 heads, 977 cylinders and 17 scetors per
track. The initialize Parameters command can be used to change these
values.
Start Sequence
--------------
When power is applied to the drive, it will spin up, do a servo
calibration, perform internal diagnostics and come ready. This
requires a total time of 5 seconds. Subsequent spin up from power
saving modes do not require calibration so will be completed within
1.5 seconds. Since the drive has ramp loading for the heads, stop
time is no longer in issue.
Execute Drive Diagnostic
------------------------
This command performs the internal diagnostic tests implemented by
the drive. The drive sets BSY immediately upon receipt of the
command, performs the diagnostic tests and saves the results. If
unsuccessful, it sets its Error register as described below. The
drive resets BSY, and generates an interrupt. The value in the Error
register should be viewed as a unique 8 bit code and not as the
single bit flags defined previosly. The registers are set to initial
values except for the Error register if error.
The table below details the codes in the Error register and a
corresponding explanation. Additional codes may be implemented at the
manufacturer's option.
Error Code Description
------------------------
01 No error detected
02 Controller error
03 Sector buffer error
05 Control processor error
8X Slave drive failed. If the slave fails diagnostics, the
master will "OR" 80 hex with its own status and load
that code in the Error register. If the slave passes or
is not connected, the master will set bit 7 of the Error
register to zero.
