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Native| Translation
------+-----+-----+-----
Form 5.25"/HH Cylinders 1249| | |
Capacity form/unform 151/ 182 MB Heads 7| | |
Seek time / track 15.0/ 4.0 ms Sector/track 36| | |
Controller ESDI Precompensation
Cache/Buffer KB Landing Zone
Data transfer rate 1.250 MB/S int Bytes/Sector 512
MB/S ext
Recording method RLL operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 10 50 | -40 65
Power: sleep W Humidity % 10 90 | 10 90
standby 12.8 W Altitude km -0.061 3.048| -0.305 15.240
idle W Shock g 2 | 20
seek W Rotation RPM 3600
read/write 14.3 W Acoustic dBA 43
spin-up W ECC Bit
MTBF h 150000
Warranty Month 12
Lift/Lock/Park YES Certificates
**********************************************************************
L A Y O U T
**********************************************************************
MICROPL. 1654 PRODUCT DESCRIPTION 106178 REV. C
+---------------------------------------------------------+
| +-+-+-+-+-+-+-+-+ (J12 Reserved)|XX J12
| +-+-+-+-+-+-+-+-+ |
| W1W2W3W4W5DA3DA2DA1 +-RN1 |XX
| Interface | | |XX
| Terminator| | |XX J2
| | | |X1
| COMPONENT SIDE +-+ |
| |XX
| |XX
| |XX
| |XX
| W20 |XX J1
| ++-+ |X1
| ++-+ LED Color Option |
|W21 |XX
| |X1 J3
+---------------------------------------------------------+ Power
(Solder Side)
+--------------------------------------+
| +--+J4 |
| HDA +--+ Frame +--+J5 |
| Ground+--+ |
| |
| J3 |
| J2 J1 XXXXXXXX|
| ........ XXXXXXXXXXXXXXXXXX Power |
+--Data---1------Signal------1--------1+
Connector Connector
**********************************************************************
J U M P E R S
**********************************************************************
MICROPL. 1654 PRODUCT DESCRIPTION 106178 REV. C
Jumper Setting
==============
x = Jumper set at factory
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 Adress lines are decoded to select the
correspondingly addressed drive. In multiple-drive systems, each
drive must have its own unique address.
Terminator Pack RN1 provides proper termination for the interface
lines. When daisy-chaining the 1654-7 drives, the terminator is
installed only in the last drive on the daisy chain.
W1 Hard- or Soft-sectored mode
-------------------------------
CLOSED The drive is configured to operate in the SOFT SECTOR
mode. Address mark generation and detection are enabled,
and the Sector/Address Mark Found interface signal is
used to report address mark found. Sector size is
selected by the host controller.
OPEN The drive is configured to operate in the HARD SECTOR
mode. The Sector/Address Mark Found signal is used to
transmit sector pulses to the host controller.
(Factory default configuration)
Sector pulses are derived from the servo disk. The number of sector
pulses generated equals:
+ +
|20,832| Where 20,832 = byte clock derived from servo
INT|------| disk
| n | INT = integer part of
+ + n = the number of unformatted bytes/
sector (82 minimum)
W2/W3/W4 Hard Sector Configuration
-----------------------------------
+--------+---------------------------+------------------------+
|Sectors | Bytes/Sector | Jumpers |
| | Formatted Unformatted | W4 W3 W2 |
+--------+---------------------------+------------------------+
| 35 | 512 595 | OPEN OPEN OPEN |
+--------+---------------------------+------------------------+
| *36 | 512 578 | OPEN OPEN CLOSED|
+--------+---------------------------+------------------------+
| 19 | 1024 1096 | OPEN CLOSED OPEN |
+--------+---------------------------+------------------------+
| 9 | 2048 2314 | OPEN CLOSED CLOSED|
+--------+---------------------------+------------------------+
| 5 | 4096 4166 | CLOSED OPEN OPEN |
+--------+---------------------------+------------------------+
| 32 | 512 651 | CLOSED OPEN CLOSED|
+--------+---------------------------+------------------------+
| 64 | 256 325 | CLOSED CLOSED OPEN |
+--------+---------------------------+------------------------+
| 1 | 20832 20832 | CLOSED CLOSED CLOSED|
+--------+---------------------------+------------------------+
* Factory default configuration
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.
Note that the factory default sector configuration is 36 sectors (W2
installed, W3 and W4 not installed).
W5 Spindle Control Option
--------------------------
CLOSED The drive must wait for a Start Spindle command to start
the spindle motor.
OPEN The drive automatically starts the spindle motor at
power-on. (Factory default configuration)
W20/W21 LED Color Option
-------------------------
A jumper is installed at W20 or W21 to select the color of the LED.
When a jumper is installed at W20, the red LED is selected.
When a jumper is installed at W21 (the factory default configura-
tion), the green LED is selected.
J3 DC Power and pin connector assignments
-------------------------------------------
+------------+ pin 1 +12 V
| 1 2 3 4 | pin 2 +12 V Return
+------------+ pin 3 + 5 V Return
pin 4 + 5 V
J12 RESERVED!
**********************************************************************
I N S T A L L
**********************************************************************
MICROPL. 1654 PRODUCT DESCRIPTION 106178 REV. C
Notes on installation
=====================
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 1654-7 series 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).
Inasmuch as 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
frame. If the enclosure is small and/or natural air flow is
restricted, a fan may be required. In any case, no point on the HDA
assembly should exceed 62*C (143*F).
Mounting Screws
---------------
4 per side 6-32 UNC-2B x 0.10 deep (thru hole).
4 on bottom 6-32 UNC-2B x 0.22 deep
Caution: To avoid restricting HDA sway space, the mounting screws
must not penetrate the side mounting holes more than .10 (+.00,
-.03) inch or the bottom mounting holes by more than .20 (+.00, -.03)
inch.
Torque applied to the screws must not exceed 8 in-lbs.
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 or equivalent.
Mating connector: AMP 88373-3 (key slot between pins 4 and 6).
J2 Data Tranfer Connector
-------------------------
J2 is a 20-pin board-edge connector. The signal contain read or
write data.
Recommended Cable: 3M Scotchflex 3365/20.
Mating Connector: AMP 88373-6 (key slot between pins 4 and 6).
J3 DC Power Connector
----------------------
J3 is a 4-pin, keyed AMP MATE-N-LOCK 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 and J5
---------------------------
3/16-inch spade lugs J4 and J5 are provided for grounding.
Mating connector: AMP 60972-2 or equivalent.
Daisy-chaining the 1654-7 Drive
-------------------------------
Host Controller
+------------+ +---------------+
| TERMINATORS+--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| T | |
+------------+ | +-------+--+----+ |
| | |
DC VOLTAGES -------------+ | |
GROUND ------------------------o-------------+
T = TERMINATORS
Interface Terminators are installed ONLY in the last physical drive
in the control chain.
Connectors J4 and J5 are provided for grounding; system character-
istics determine the proper ground connection.
Up to seven disk drives may be connected to a single host controller/
formatter. The control signal 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
------------------------------------
Connector J1
The Control Signals control the drive and transfer drive status to
the host controller. The signals are low-true at the interface, high-
true into drivers and out of receivers, and have the following logic
levels.
Driver: 7438 or equivalent
Receiver: 74LS14 or equivalent
True = 0.0 VDC to 0.40 VDC @ I = -48 milliamps (maximum)
False = 2.5 VDC to 5.25 VDC @ I = +250 microamps (open collector)
Interface Cable Length 10 feet (3 meters) maximum
Connector J2
All interface data transfer signals are differential in nature.
One TTL control signal and four TTL status signal are also provided
at Connector J2.
The signals are high true into drivers and out of receivers and have
the EIA RS-422 levels shown.
Driver: AMD 26LS31 or equivalent
Receiver: AMD 26LS32 or equivalent
High = +2V
Low = +0.5V
Adjustments and Maintenance
---------------------------
The 1654-7 disk drive requires no adjustments or periodic main-
tenance; additionally, no mechanical adjustments are required to
prepare a system for handling or shipment.
Field-Replacable Components
---------------------------
The concept of repair by replacement of complete functional
components is utilized in the 1654-7 Series, resulting in an MTTR of
less than 15 minutes.
**********************************************************************
F E A T U R E S
**********************************************************************
MICROPL. 1654 PRODUCT DESCRIPTION 106178 REV. C
Interface
---------
The 1654-7 disk drive is pin- and function-compatible with the
Serial mode of the Enhanced Small Device Interface (ESDI) for 5 1/4-
inch Winchester disk drives. In the Serial mode, interface signals
(control, data, and status) are transmitted serially via handshaking
request/acknowledge signals.
Media Defects
-------------
Media defects are physical characteristics of the media which result
in repetitive read error 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 address (HD), cylinder address (CYL), and number of Bytes From
Index (BFI). A printed listing 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 on 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 (1248).
2) The maximum cylinder minus 8 (1240).
3) A special cylinder 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 1654-7 drives shall have 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
---------
| 1654-7 |
----------------------------------+--------+
Track-to-Track msec. typ. | 4 |
Average msec. typ. | 15 |
msec. max | 37 |
One-Third Stroke msec. max. | 17 |
Latency msec. avg. | 8.33 |
Nominal msec. max. | 16.67 |
----------------------------------+--------+