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Articles / TULARC / PC info / Hard Drives / MICROPOLIS Hard Drives / |  |
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Hard Drive: MICROPOLIS: 1518 1339MB 5.25"/FH ESDI |
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1 5 1 8 MICROPOLIS
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 5.25"/FH Cylinders 2100| | |
Capacity form/unform 1339/ 1531 MB Heads 15| | |
Seek time / track 14.5/ 4.0 ms Sector/track 83| | |
Controller ESDI Precompensation
Cache/Buffer KB Landing Zone
Data transfer rate 2.916 MB/S int Bytes/Sector 512
MB/S ext
Recording method RLL operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 5 50 | -40 65
Power: sleep W Humidity % 10 90 | 10 90
standby 19.0 W Altitude km -0.061 3.048| -0.305 15.240
idle W Shock g 2 | 20
seek W Rotation RPM 3600
read/write 24.0 W Acoustic dBA 43
spin-up W ECC Bit
MTBF h 150000
Warranty Month 60
Lift/Lock/Park YES Certificates
MICROPL. 1518 PRODUCT DESCRIPTION 105388 REV. B
+---------------------------------------------------------+ | +J14|XX J12 | || | | COMPONENT SIDE ++ |XX | |XX | |XX J2 | |XX | +-RN11 | 1 | | | |XX | | | |XX | +-+ |XX | 1-+ |XX J1 | | JP1 |XX | | | |XX | W33++ +-+ |XX | || | 1 | W32++ ++W28 |XX J3 | ++ |XX Power +---------------------------------------------------------+ 1
+-----------------------------------------+
| ++J4 HDA Ground Connector |
| ++ |
| ++J5 Frame Ground Connector |
| ++ |
| |
| J2 1 J1 1 J3 1|
+xx-..........-XXXXXXXXXXXXXXXXXX-XXXXXXXX+
+-----Data-------Control-----------Power--+
MICROPL. 1518 PRODUCT DESCRIPTION 105388 REV. B
Jumper setting
==============
x = Factory default setting
JP1 Jumper Block
----------------
1-----+
| o o |DA3-+
| o o |DA2-+-- Drive Address
| o o |DA1-+
| o o |W5----- Spindle Control
| o o |W4--+
| o o |W3--+-- Hard Sector Configuration
| o o |W2--+
| o o |W1----- RESERVED (No jumper)
+-----+
Drive Select DA3/DA2/DA1 ------------------------- +--------+------------------------+ |Drive | Select Jumpers | |Address | DA3 DA2 DA1 | +--------+------------------------+ |x 1 | OPEN OPEN CLOSED | | 2 | OPEN CLOSED OPEN | | 3 | OPEN CLOSED CLOSED | | 4 | CLOSED OPEN OPEN | | 5 | CLOSED OPEN CLOSED | | 6 | CLOSED CLOSED OPEN | | 7 | CLOSED CLOSED CLOSED | +--------+------------------------+
Drive Address 0 is used as a "deselect" (i.e., no drive is selected).
The three Drive Select interface lines are decoded to select the
correspondingly addressed drive to the host controller/formatter. In
multiple-drive systems, each drive must have its own unique address.
Terminator Pack RN11 provides proper termination for the interface
lines. When daisy-chaining multiple 1518 drives, the terminator is
installed only in the last drive on the daisy chain.
Sectoring Options
-----------------
The Sector/Address Mark Found signal is used to transmit sector
pulsed to the host controller. Sector pulses are derived from the
servo disk. The number of sector pulses (s) generated is equals:
+ +
|20,832| Where 20,832 = frames derived from servo disk
s=INT|------| per revolution
| n | INT = integer part of
+ + n = the number of frames/sector
(82 minimum)
s = number of pulses generated
+ +
| Unformatted Bytes/Sect x 3 |
n=INT |--------------------------- |
| 7 |
+ +
1
One frame = -------- of a revolution.
20,832
W2/W3/W4 Hard Sector Configuration
-----------------------------------
+--------+---------------------------+------------------------+
|Sectors | Bytes/Sector | Jumpers |
| | Formatted Unformatted | W4 W3 W2 |
+--------+---------------------------+------------------------+
| 82 | 512 594 | OPEN OPEN OPEN |
+--------+---------------------------+------------------------+
| x 83 | 512 584 | OPEN OPEN CLOSED|
+--------+---------------------------+------------------------+
| 44 | 1024 1105 | OPEN CLOSED OPEN |
+--------+---------------------------+------------------------+
| 22 | 2048 2209 | OPEN CLOSED CLOSED|
+--------+---------------------------+------------------------+
| 11 | 4096 4419 | CLOSED OPEN OPEN |
+--------+---------------------------+------------------------+
| 58 | 768 839 | CLOSED OPEN CLOSED|
+--------+---------------------------+------------------------+
| 149 | 256 326 | CLOSED CLOSED OPEN |
+--------+---------------------------+------------------------+
| 1 | 48,538 46,608 | CLOSED CLOSED CLOSED|
+--------+---------------------------+------------------------+
The number of bytes/sector may be specified using the Set Bytes Per
Sector command or by selecting a default sector configuration with
option jumpers W2, W3, and W4.
Other hard sector combinations are available; contact Micropolis
Product Support (818/709-3325) for details.
W5 Spindle Control Option
-------------------------
CLOSED The drive must wait for a Start Spindle command to start
the spindle motor.
x OPEN The drive automatically starts the spindle motor at power
on.
W28 Frame Ground Option
------------------------
CLOSED Frame ground is connected to logic ground.
x OPEN Frame ground is not connected to logic ground.
W32/33 Spindle Synchronization Option
--------------------------------------
Jumpers installed at W32 and W33 provide termination for the Spindle
Synchronization signals (Master Sync and Slave Sync respectively).
When the Spindle Syncronization option is to be implemented, the
jumpers at W32 and W33 are removed from all drives except the last
drive on the cable.
A Spindle Sync Connector cable is daisy-chained to each drive from
connector J14 on the PCBA. This transmit the Master Sync and Slave
Sync signals as required. The Ground pin provides for noise immunity
and the Key pin ensures that the connector cannot be reversed.
The controller may Set Configuration to specify spindle synchroniza-
tion operation; see the ANSI ESDI Standard.
- Unsynchronized: If the drive is set to Unsynchronization (10),
it ignores the SLAVE SYNC signal.
- Slave: If the drive is set to Slave (00), it does not generate
the MASTER SYNC signal or the SLAVE SYNC signal but will
synchronize its index to the SLAVE SYNC signal (J14, pin 1)
supplied by an external source.
- Master: If the drive is set to Master (01), it generates the
SLAVE SYNC output signal (J14, pin 1) for use directly be the
slave drives.
- Master Control: If the drive is set to Master Control (11), it
generates the MASTER SYNC signal (J14, pin 3). This output is
used by the controller to generate the SLAVE SYNC signal (J14,
pin 1) for the slaves.
J14 Spindle Sync Connector Pin Assignment
-----------------------------------------
+---+-----------------+
|Pin| Signal |
+---+-----------------+
| 1 | Ground |
+---+-----------------+
| 2 | Master Sync |
+---+-----------------+
| 3 | Reserved (Key) |
+---+-----------------+
| 4 | Slave Sync |
+---+-----------------+
J3 DC Power and pin connector assignments ------------------------------------------- -------------------+ --+ +-----J3-----+| pin 1 +12 VDC 1| | 4 3 2 1 || pin 2 +12 Volts Return -+ +------------+| pin 3 + 5 Volts Return ------------------+ pin 4 + 5 VDC
J12 RESERVED!
MICROPL. 1518 PRODUCT DESCRIPTION 105388 REV. B
Notes on installation
=====================
Recomended Drive mounting
-------------------------
horizontally vertically
+-----------------+ +--+ +--+ +------------------+
| | | +-----+ +-----+ | | | x
| | | | | | | | x+----------------+x
+-+-----------------+-+ | | | | | | ||x x||
+---------------------+ | | | | | | || x x ||
| | | | | | || x x ||
x x | | | | | | || x x ||
+------x------x-------+ | +-----+ +-----+ | || xx ||
+-+------x--x-------+-+ +--+ +--+ || x x ||
| xx | || x x ||
| x x | || x x ||
+---x--------x----+ |x x|
x x x++----------------++x
Dimensions and Mounting
-----------------------
The 1518 drive uses industry-standard mounting for 5 -inch half-
height Winchester disk drives.
Recommended orientation is vertical on either side, or horizontal
with the Device Electronics board down; other mounting orientations
may be used provided the ambient air temperature around the drive is
kept at or below 50*C (122*F).
The term "ambient" becomes imprecise when referencing a drive in a
system, since it is difficult to determine where the air temperature
should be measured. To help resolve this confusion, Micropolis
specifies that the maximum HDA casting temperature (regardless of the
air temperature around the drive) is 60*C (140*F). Not exceeding this
temperature will ensure that the head-to-media interface never exceed
its temperature limit.
Since the drive frame acts as a heat sink to dissipate heat from the
unit, the enclosure and mounting structure should be designed to
allow natural convection of heat around the HDA and rame. If the
enclosure is small and/or natuarl air flow is resricted, a fan may
be required.
Mounting Screws
---------------
2 per side 6-32 UNC-2B
4 on bottom 6-32 UNC-2B
Caution: To avoid restricting HDA sway space, the mounting screws
must not penetrate the outer surface of the side mounting holes by
more than 0.20 inches or the bottom mounting holes by more than
0.156 inches. Screws taht are too long may short to PCBA components
and/or prevent proper operation of the shock mount system.
Control Signal Connector J1
---------------------------
J1 is a 34-pin board-edge connector. The signals on this connector
control the drive and transfer drive status to the host controller.
Recommended Cable: 3M Scotchflex 3365/34
Mating Connector: AMP 88373-3 (key slot between pins 4 and 6)
Data Transfer Connector J2
--------------------------
J2 is a 20-pin board-edge connector containing read or write data
signals.
Recommended Cable: 3M Scotchflex 3365/20
Mating Connector: AMP 88373-6 (key slot between pins 4 and 6)
DC Power Connector J3 --------------------- J3 is a 4-pin, keyed AMP MATE-N-LOK Connector. This connector supplies DC power (+5V and +12V) to the drive.
Mating Connector: AMP 1-480424-0
Pins: AMP 350078-4
Suggested Wire Size: 18 AWG
Ground Connectors J4/J5
-----------------------
3/16-inch spade lugs J4 and J5 are provided for grounding; system
characteristics determine the proper ground connection.
Mating Connector: AMP 60972-2 or equivalent.
Daisy-Chaining the 1518 Drive
------------------------------
+-HOST-------+ +---------------+
| CONTROLLER +--CONTROL---o-----+ J1 Drive #1 |
| | +---------+-----+ J2 |
| | | | +--+ J3 J4/J5 |
| | | | | +-------+-------+
| | | | | +-------------+
| | | | | +---------------+ |
| | | o--+--+ J1 Drive #2 | |
| | | +------+--+--+ J2 | |
| | | | | o--+ J3 J4/J5 | |
| | | | | | +-------+-------+ |
| | | | | | +-------------o
| | | | | | +---------------+ |
| | | | o--+--+ J1 Drive #3 | |
| | | | +--+--+--+ J2 | |
| | | | | | o--+ J3 J4/J5 | |
| | | | | | | +-------+-------+ |
| +--+ | | | | +-------------o
| DATA +-----+ | | | +---------------+ |
| +---------+ +--+--+ J1 Drive #4 | |
| +---------------+--+ J2 +----+ |
| | o--+ J3 J4/J5|RN11| |
+------------+ | +-------+--+----+ |
| | |
DC VOLTAGES -------------+ | |
GROUND ------------------------o-------------+
Interface Terminator RN11 is installed ONLY in the last physical
drive in the control chain.
Connectors J4 and J5 are provided for grounding; system
characteristics determine the proper ground connection.
Up to seven disk drives may be connected to a single host controller/
formatter. The control signals at J1 are transmitted via the
standard, daisy-chain interconnection. The data signals at J2 are
transmitted via radially connected data-transfer lines.
Interface Electrical Characteristics
------------------------------------
The signals at Control Signal Connector J1 control the drive and
transfer drive status to the host controller. The signals control are
low-true at the interface, high-true into drivers and out receivers,
and have the following logic levels:
True = 0.0 VDC to 0.4 VDC @ I = -48 milliamps (maximum) False = 2.5 VDC to 5.25 VDC @ I = +250 microamps (open collector)
All interface data transfer signals are differential in nature.
Up to seven drives can be connected to one host controller/formatter.
Drive Select 1, 2 and 3 carry the binary-coded addres of the drive to
be selected. The address of the drive is set with driveselection
jumpers DA1, DA2, and DA3 as a binary combination. When the address
is decoded and the decoded value matches the value specified by the
three drive-selection jumpers, that drive is enabled to receive
commands and transmit status. Drive Select 1 is the least significant
bit.
Adjustments and Maintenance
---------------------------
The 1518 drive requires no adjustments or periodic maintenance.
Additionally, no mechanical adjustments are required to prepare the
drives for handling or shipment.
Field-Replaceable Components
----------------------------
The concept of repair by replacement of complete functional
components is utilized in the 1518 drive, resulting in an MTTR of
less than 15 minutes.
MICROPL. 1518 PRODUCT DESCRIPTION 105388 REV. B
Micropolis 1518 high-performance, 5 -inch Winchester Disk Drive
provides high-speed, random-access storage.
The drive is fully compatible with the Serial mode of the
Enhanced Small Device Interface (ESDI) standard and are designed to
meet the needs of diverse applications environments.
Media Defects
-------------
Media defects are physical characteristics of the media which result
in repetitive read errors when a functional drive is operated within
specified operating conditions.
At the time of manufacture, a media test system evaluates every
drive and identifies each media defect location. The defects are
logged on a label affixed to the drive. The defective areas are
identified by head (HD) address, cylinder (CYL) address, and number
of Bytes from Index (BFI). A printed list of the defects is also
shipped with each drive.
In addition to listing the defects on the label and the printout, the
defects are also mapped in the drive. The defect list is written for
each data surface. The list is written on the corresponding surface
in Sector 0 at three cylinder locations:
1) The maximum cylinder
2) The maximum cylinder minus 8
3) A special cylinder which is accessed as "Cylinder 4095 (FFFh).
NOTE: The cylinder at the address of 4095 is a drive-unique location.
This is in compliance with the industry-standard ESDI specification.
Do not attempt to write to Cylinder 4095.
+-------------------------------------------------------------------+ | Micropolis specifies that all 1518 disk drives shall no more than | | one defect per megabyte of unformatted capacity. Additionally, | | Cylinder 0 and the cylinder at 4095 shall be defect-free at the | | time of shipment. | +-------------------------------------------------------------------+
Seek Time
---------
+----------------------------------+--------+
| | 1518 |
+----------------------------------+--------+
|Track-to-Track msec. typ. | 4 |
+----------------------------------+--------+
|Average msec. typ. | 14.5 |
| msec. max. | 33 |
+----------------------------------+--------+
|One-Third Stroke msec. max. | 15.5 |
+----------------------------------+--------+
|Latency msec. avg. | 8.33 |
| Nominal msec. max. | 16.67 |
+----------------------------------+--------+
Data Transfer Signals
---------------------
All data-transfer lines between the drive and the host system are
differential and may not be multiplexed.
For pairs of balanced signals are used to transfer data: NRZ Write
Data, NRZ Read Data, Write Clock, and Read/Reference Clock.
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