MiniScribe 3180E User manual

•
MiniCrr-il--\a
I 111 11.....1'-I 11..1'-'
===== S:;!:;ti:;:::: for Data Storage
PRODUCT MANUAL
MODEL 3180E
... .

130 or 182 M Byte 51/4 " Half-Height
Winchester Disk Drives
3130
3180
SERIES
MiniScribe's 3130 and 3180 disk drives
deliver true full-height performance in a
half-height form factor.
The newest generation of personal
computers and workstations are featuring
smaller footprints, lower profiles and are
packed with higher performance. The 3130
and 3180 models are available in either
SCSI or ESDI interfaces to meet this need.
This new se ries has been designed to
bring the latest technologies to MiniScribe's
full product line of data storage solutions.
Formatted storage capacities of the
3130/3180 Series range from 112 MBytes
to 160 MBytes and average access times
of 17 msec. are achieved. Data integrity is
ensured by rugged thin film media.
Because of its extensive product line,
Miniscribe is able to bring a variety of
proven technology building blocks to the
development of new products. The 3130
and 3180 products have benefited from this
strength.
Superior shock and vibration and thermal
performance are realized by the four-point
mounting system and by an enhanced
baseplate design.
The series also features efficiencies of
low power dissipation. The ESDI models
maintain power dissipation of only 15 watts
when idle and the SCSI models 17 watts.
The 3130/3180 Series has been designed
for automated robotic assembly.
MiniScribe's integrated manufacturing
experience delivers the highest, most
consistent quality. Assembly design has
been simplified to include fewer
subassemblies. Rapid production ramp-up
is facilitated by Min iScribe's "designed-for-
automation" principles and by its modular,
software-based assembly techniques.
Prior to shipment, Miniscribe drives
undergo rigorous burn-in and testing which
ensures high standards of reliability and
performance.
In addition to the 3130 and 3180 drives,
the company produces a complete line of
3 V2 -inch and 5 \1.i -inch Winchester disk
drives which begin at 20 MBytes, extend
to high capacity/high performance models,
and include a variety of standard, intelligent
and custom interfaces.
-a. IVliniC:rr-ik~
-~ I 111 11......l'-1 IU'-'
===== Sr::!::tf:m:; for Data Storage

51/4 " Half-Height Winchester
Disk Drive Specifications
Capacity Unformatted
Per Drive (MBytes)
Per Track (Bytes)
Capacity Formatted
Per Drive (MBytes)
Per Track (Bytes)
Per Sector (Bytes)
Sectors Per Track
Functional
Disks
Servo Heads
R/W Heads
Cylinders
Track Density (tpi)
Recording Density (bpi)
Areal Density (Mbits/sq.in.)
Rotational Speed (RPM)
Interface
Data Transfer Rate
(per second)
Recording Method
Access Time (including settling)
Average (msec.)
Track-to-track (msec.)
Maximum (msec.)
Latency (average, msec.)
DC Power Requirements
+ 5 VDC ±5%
+12 VDC ±5%
Max. Starting (1 O sec.)
Power Dissipation
Idle
Seeking
Environmental Limits
Ambient Temperature
Relative Humidity
Maximum Wet Bulb
Error Rates
Soft Read Errors
Hard Read Er rors
1 per 10
10 bits
transferred
3130E 3180E
130 182
20,832 20,832
112 157
17,920 17 ,920
512 512
35 35
3 4
1 1
5 7
1250 1250
1,193 1,193
19,763 19,763
13.4 13.4
3,600 3,600
ESDI ESDI
10.0 Mbits
2,7 RLL
10.0 Mbits
2.7 RLL
17
4.0
35
8.33
17
4.0
35
8.33
3130E/3180E
0.6 amps typical
1.1 amps typical
2.5 amps
15 watts typical
18 watts typical
50°F to 122°F
(10°C to 50°C)
8% to 80%
78°F (26°C)
Reliability
MTBF
PM
MTTR
31305 31805
130 182
20,832 20,832
115 160
18.432 18,432
512 512
36 36
3 4
1
5 7
1255 1255
1,193 1,193
19,763 19,763
13.4 13.4
3,600 3,600
SCSI SCSI
4.0 MBytes
2,7 RLL 4.0 MBytes 2.7 RLL
17
4.0
35
8.33
17
4.0
35
8.33
31305/31805
1.0 amps typical
1.1 amps typical
2.5 amps
17 watts typical
20 watts typical
50°F to 122°F
(10°C to 50°C)
8% to 80%
78°F (26°C)
35,000 hours
None
Seek Errors
1 per 10
12
bits
transferred
1 per 10
6 seeks Component Design Life 30 minutes
5 years
Shock
Operational
Non-Operational
2 G' s, 11 msec.
pulse duration, V2
sine wave
40 G's, 15 msec.
pulse duration, V2
sine wave
Features and specifications subject to change
without notice.
©1988 MiniScribe Corporation. All rights
reserved. Printed in U.S.A. 8/88
Physical
Height
Width
Depth
Weight
==== S::!::!!:;:::; for Data Storage
1.625 in .
(41.3 mm)
5.75 in .
(146 mm)
8.00 in .
(203 mm)
3.2 lbs. (1.45 kg)

MINISCRIBE
PRODUCT MANUAL
MODEL 3180E
P/N 1102
Revision P2
June 8, 1988
(Subject to Change Without Notice)
Miniscribe Corporation
1861 Lefthand Circle
Longmont, Colorado 80501
[phone]

REVISIONS
MANUAL NO.
1102
:---------------------------------------------------------------:
I RV
EC NO.
SECT. !DESCRIPTION
DATE
'----
_______ ! _______________________________ _
--------:
Pl ALL Prototype Release. 05/12/88
-------- ------- -------------------------------- --------
P2 N/A
2.9 Corrected Sound Pressure levels. 06/08/88
Fig 2-1 Redrawn.
3.5 Reworded.
6.5 Corrected number of cylinders.
Fig 7-3 Redrawn.
----,--------
--------:
:---- -------- ------- -------------------------------- --------:
ii

PREFACE
This Product Manual, intended for use
and planners, describes the design
Miniscribe 3180E hard disk drives.
iii
by engineers, designers,
characteristics of the

TABLE OF CONTENTS
Section
1.0 Introduction ............................................ 1-1
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
Product Specification .................................. .
Model Specifications .............................. .
Performance Specifications ........................ .
Power Requirements ................................ .
Physical Characteristics .......................... .
Environmental Characteristics ..................... .
Reliability and Maintenance ....................... .
Shock and Vibration ............................... .
Magnetic Field .................................... .
Acoustic Noise .................................... .
Safety Standards .................................. .
Functional Description ................................. .
General Theory of Operations ...................... .
Read/Write and Control Electronics ................ .
Head Positioning System ........................... .
Heads and Disks ................................... .
Spindle Drive Mechanism ........................... .
Air Filtration System ............................. .
Automatic Carriage Retrack and Locking ............ .
Fine Track Safety System .......................... .
2-1
2-1
2-1
2-2
2-2
2-2
2-2
2-3
2-3
2-3
2-4
3-1
3-1
3-1
3-2
3-2
3-3
3-3
3-3
3-3
4.0 Electrical Interface .................................... 4-1
4.1 Control Signal Drivers and Receivers ............... 4-1
4.2 Data Line Drivers and Receivers .................... 4-2
5.0 Physical Interface ...................................... 5-1
5.1 Jl/Pl Connector .................................... 5-1
5. 2 J2/P2 Connector..... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5. 3 J3/P 3 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.4 Frame Ground Connector ............................. 5-1
6.0 3180E ESDI-Serial Mode Interface Implementation ......... 6-1
6.1 Control Input Lines ................................ 6-2
6.1.1 Drive Select ..........•.................. 6-3
6.1.2 Head Select .............................. 6-3
6.1.3 Write Gate ............................... 6-4
6.1.4 Read Gate ................................ 6-6
6.1.5 Command Data ............................. 6-6
6.1.6 Transfer Request (Transfer Req) .......... 6-15
6.1.7 Address Mark Enable ...................... 6-17
6.2 Control Output Lines ............................... 6-17
6.2.1 Drive Selected ........................... 6-18
6.2.2 Ready .................................... 6-18
6.2.3 Configuration/Status Data (Config/Status)6-18
6.2.4 Transfer Acknowledge (Transfer Ack) ...•.. 6-19
6.2.5 Attention ................................ 6-20
6.2.6 Index .................................... 6-20
6.2.7 Sector/Address Mark Found ................ 6-20
6.2.8 Command Complete ......................... 6-22
iv

TABLE OF CONTENTS (CONTINUED)
6.3
Data Transfer Lines ................................ 6-22
6.3.1 NRZ Write Data ........................... 6-22
6.3.2 NRZ Read Data ............................ 6-22
6.3.3 Read/Reference Clock ..................... 6-24
6.3.4 Write Clock .............................. 6-24
6.4
Read,Write and Format Parameters ................... 6-24
6.4.1 General Summary of Critical Read-Function
Timing Parameters ........................ 6-24
6.4.2 General Summary of Critical Write-
Function Parameters ...................... 6-25
6.4.3 Fixed Sector Implementation or Drive Hard
Sectored ................................. 6-26
6.4.4 Address Mark Implementation (Controller
Soft Sectored) ........................... 6-30
6.5 Defect List Option ................................. 6-32
7. 0 Installation ............................................ 7-1
7.1 Unpacking and Inspection ........................... 7-1
7 .1.1 Single Pack.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1.2 Multipack ................................ 7-3
7. 1. 3 PrePacking... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7. 2 Physical Interface.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7.2.1 Power and Interface Cables and Connectors 7-5
7.2.2 Control Signal Connector Jl .............. 7-5
7.2.3 Data Transfer Connector J2 ............... 7-7
7.2.4 DC Power Connector J3 .................... 7-7
7.2.5 Frame and Ground Connector ............... 7-7
7. 3 3180E Drive Options ................................ 7-7
7.3.1 Drive Addressing and Interface Termination?-?
7.3.2 Spindle Control Option ................... 7-8
7.3.3 Sector Configurations/Options ............ 7-8
7.3.4 Daisy Chaining Miniscribe 3180E Drives ... 7-8
7.4 Mounting Orientation ............................... 7-9
7.5 Cabling ............................................ 7-11
7. 6 Diagnostics ........................................ 7-11
7.6.1 Diagnostics Mode ......................... 7-11
7.6.2 General Description ...................... 7-12
7.6.3 Error Message Readout .................... 7-12
7.7 Error Code Definitions ............................. 7-14
v

LIST OF FIGURES
Figure
2-1 Outline and Mounting Dimensions ......................... 2-5
4-1 Control Signal Driver and Receiver Circuit .............. 4-1
4-2 Data Signal Driver and Receiver Circuit ................. 4-2
5-1 Jl Connector-Control Signals ............................ 5-2
5-2 J2 Connector-Data Signals ................ _ .............. 5-2
5-3 J3 Connector Pin Assignments ............................ 5-2
6-1 Soft Sector Address Mark, Write Gate, PLO Sync Format
Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-2 Fixed Sector Address Mark, Write Gate, PLO Sync Format
Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6-3 Write Gate Termination Circuit .......................... 6-5
E-4 One Bit Transfer Timing To Drive ........................ 6-16
6-5 One Bit Tran sf er Timing From Ori ve ...................... 6-16
6-6 Write Address Mark Timing ............................... 6-17
6-7 Typical Serial OPS ...................................... 6-18
6-8 Sector Pulse Timing ..................................... 6-21
6-9 Read Address Mark Timing ................................ 6-21
6-10 NRZ Read/Write Data Timings ............................. 6-23
6-11 Fixed Sector Format ..................................... 6-27
6-12 Soft Sectored Format .................................... 6-31
6-13 Defect List Format ...................................... 6-33
7-1 Single Pack Shipping Container .......................... 7-2
7-2 Mul tipack Shipping Container ...... : ..................... 7-4
7-J Option Jumper, Terminator, and Connector Locations ...... 7-6
7-4 Daisy Chaining The Miniscribe 3180E Drives .............. 7-10
7-5 Connector Orientation ................................... 7-12
vi

Table
6-1
6-2
6-3
6-4
LIST OF TABLES
Jl Control Signal Connector Pin Assignments ............. 6-1
J2 Data Signal Connector Pin Assignments ................ 6-2
Jl5 Drive Select Jumpers 1, 2, 3 ........................ 6-3
Command Data Word Structure and Definition .............. 6-7
6-5 Status Response Bi ts.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
6-6 Vendor Unique Status Words .............................. 6-10
6-7 Configuration Response Bits ............................. 6-11
6-8 Configuration Responses ................................. 6-12
6-9 Request Configuration Modifier Bits ..................... 6-13
6-10 Control Command Modifier Bits ........................... 6-14
6-11 Track Offset Command Modifier Bits ...................... 6-13
7-1 Sector Configuration Jumpers ............................ 7-9
7-2 Diagnostic Jumper Configurations ........................ 7-12
vii

3130/3180: KEY SELLING POINTS
• Half-Height form factor
• Full-Height replacement
• "Half-Height" capacity upgrade
• Interface flexibility
• ESDI or SCSI with common HOA
• Performance
• 17 msec average access time
• 10 MBit/sec transfer rate (ESDI)
• Up to 4 MB/sec (SCSI)
• Proven Design
• Electronics: 9380
• Mechanics: 3085
• High Volume capability
• Proven design
• Automated assembly
• Highest quality /reliability
• 35,000 MfBF
• Simple design: Low "part-count"

1.0 INTRODUCTION
The Miniscribe 3!80E Series of disk drives are low cost,
high capacity, high per~ormance random access storage
devices utilizing 5 1/4" thin film disks as storage redia.
Each disk surface employs one moveable head to access th~
data tracks. The 3180E Series features capacity of 182
megabytes (unformatted storage capacity). The 3180E disk
drives utilize advanced 3380 Whitney-type head f lexures and
sliders which allcw closer spacing of disks. allowing a
higher number of disks in a standard 5 1/4" package.
High perfcrmance is achieved by the utilization of a rotary
voice coil actuator, microprocessor control, and a closed
loop servo positioning system. The closed loop servo system
and dedicated servo surface combine to allow state-of-the-
art recording densities (1100 TPI) in a 5-1/4" package. The
read/write heads, disk platters and actuator ~ssembly are
housed within a sealed enclosure containing a recirculating
a~1 breather filter to supply clean air exceeding Class 100
environment.
High quality mechanical constructi0n wit~ a sophisticated
single printed circuit assembly allows for high MTBF (35,000
hours} and maintenance-free operation throughout ~he life of
the drive.
The 3180E utilizes the industry standard ESDI compatible
interface with a 10 megabit/second data transfer rate. It
also supports hard and soft sectoring along with a range of
ESDI standard 0ptions such as track offset, spindle motor
sequencing, and initiation of drive diagnostics.
Other advantages of ESDI are data separation performed on
drive, disk configuration data stored ~n drive alo~g with a
self-contained defect map, data encoded in (NRZ} rather than
MFM, insuring higher data integrity over longer cable
distances.
The 3180E uses size
industry standard half
dimensions. It ~ls~
tors.
and shock mountings identical to the
height 5-1/4" mini-floppy mounting
uses the same DC voltages and connec-
KEY FEATURES OF THE M9000E SERIES
o Storage capacity of 156 mb (formatted}.
o Identical physical size and mounting as standard 5 1/4"
Winchester disk drives.
o Power s11pply requirements compatible with industry
standard 5-1/4" fixed disk drives.
o 18 msec. average access ti~~ (including settling}.
o 15 watt standby power requirement.
o No adjustments necessary.
o Fail-safe actuator lock at spin down or power failure.
1-1

o Dual chassis construction for protection during adverse
operating conditions.
c Start up diagnostics.
o Dedicated shipping zone.
o Single pri~ted circuit board utilizing custo~ VLSI IC's
and SMT.
o Thin filrr metallic ~edia for higher bit density and
resolution plus improved durability.
o MTTR of less than 30 minutes.
c Hard or soft sectoring permits use with existing ESDI
controller.
1-2

2.0 PRODUCT SPECIFICATIONS
2.1 MODEL SPECIFICATIONS
Capacity (Unformatted):
Number of Heads:
Nu~ter of Cylinders
Bytes per Track:
Number of Disks:
Type of Disk:
Type of Head:
Servo Head
Transfer rate (Mbits/sec):
*Typical Formatted Capacities:
Capacity Formatted: (ESDI)
Sector size (bytes):
Sectors/Track (1 spare):
Number of Cylinders:
*See Section 7.3.3 for Fixed Sector.
Recording Characteristics:
BPI (Bits per Inch)
TPI (Tracks per Inch)
FCI (Flux Ch3nges per Inch)
Recording Code
Rotational Speed
Average Latency
2.2 PERFORMANCE SPECIFICATIONS
Data Transfer Rate
Access Times
(incl. settling time)*
Single Track
** Average (of all possible seeks)
1/3 Stroke Seek Time
Full Stroke Seek Time
Re zero
3180E
----
182 MB
7
1250
~0832
4
sp1Jtt'?red
coJT.posite
1
10
157 MB
512
35
1250
20.lK
1135
13.4K
2,7
3500 rpm
8.33 msec
10.0 Mbits/second
3.5
msec.
17
msec.
typ
18 msec. max
35
msec. :max
250 IDSE'C. max
Start time (typical)
Stop ti~e (typical)
20 seconds fro~ power on to -Ready
15 seconds from power removal
*Not including command transfer overhead
2-1

2.3 POWER REQUIREMENTS
DC Voltage Input
+12 Volts, DC
Start Surge:
Steady State:
+5 Volts, DC
±5%, .6 amps typical
2.5 amps max. during initial 15 sec.
± 5%, 1.1 amps typical, 1.9 amps peak
(seeking). Maximum ripple allowed is 1%
with equivalent resistive load.
Maximum ripple allowed is 2% with equivalent resistive load.
AC Input
Power Dissipation
None required
IDLE MODE
SEEKING MODE
15 WATTS
18.5 WATTS
2.4 PHYSICAL CHARACTERISTICS
Outline Dimensions 1.625 in. (41.3mm) H X 5.75 in. (146mm)
W X 8.0 in. (203mm) L
Mounting Dimensions See Figure 2-1
Weight 3.2 Pounds
2.5 ENVIRONMENTAL CHARACTERISTICS
Temperature
Operating
(stabilized)
Non-operating
Thermal Gradient
Humidity
50 deg. F (10 deg. C) to 122 deg. F
(50 deg. C)
-40 deg. F (-40 deg. C) to 140 deg. F
(60 deg. C)
18 deg. F/hr. (10 deg. C/hr.) max.
8% to 80% (noncondensing)
78 deg. F (26 deg. C)
level)
Oper. and Non-operating
Maximum Wet Bulb
Altitude (rel. to sea
Operative
Non-operative
-200 to 10,000 feet
40,000 feet
2.6 RELIABILITY AND MAINTENANCE
MTBF
MTTR
Preventive Maint.
Comp. Design Life
35,000 POH
30 minutes
None
5 years
2-2

Data Reliability
1 recoverable error in 10
10
bits
read
1 permanent error in 10
12
bits
read (not recoverable in 16
reads)
1 seek error in 10
6
seeks
Media defect criteria (as shipped from Miniscribe)
Maximum Defects* 180
2 bytes in length
Cylinder zero defect free
*A single defect is defined as being less than 2 bytes lcng.
A multiple defect is defined as 2 bytes or longer, or as a
track with more than 1 single defect.
2.7 SHOCK AND VIBRATION
Non-operational Shock
40 G's, 15 ms pulse duration, 1/2
sine wave
Non-operational Vibration 5 to 31 Hz, .01 in. peak to peak,
31 to 300 Hz, 1.0 G peak
Operational Shock
Operational Vibration
2.8 MAGNETIC FIELD
2.0 G's, 11 ms duration, 1/2 sine
wave with no error rate degrada-
tion. 10.0 G's, 11 ms duration,
1/2 sine wave with no permanent
damage or loss of data
5 - 22 Hz, .01 in peak to peak,
22 to 300 Hz, .25 G peak acceler-
ation
The externally induced magnetic flux density may not exceed
3 gauss as measured at the top of the drive.
2.9 ACOUSTIC NOISE
IDLE MODE
SEEKING MODE
42 dBa Sound Pressure Level
50 dBa Sound Pressure Level
2-3