Toshiba MK-150FA series User manual

MK-150FA SERIES
5.25-INCH FIXED DISK DRIVES
OEM MANUAL
TOSHIBA AMERICA, INC.
DISK PRODUCTS DIVISION
Contents of this manual are subject to change without prior notice.
Copyright 1988, 1989 Toshiba America, Inc.
All rights reserved
Document NumberD W54-0 1-007-02

REVISION RECORD
Edition Date Published Revised Contents
01
April 1986 Initial Release
02 February 1989 Revised Format
Direct comments concerning this publication to:
MK-150FA Series OEM Manual
TOSHIBA AMERICA, INC.
Disk Products Division
9740 Irvine Blvd.
Irvine, CA 92718
[phone]
AGENCY APPROVALS
UL
CSA
TUV
E63303 LR39635-65 UEA-C046
-i-

TABLE OF CONTENTS
SECTION 1 INTRODUCTION PAGE
1.1
Purpose of Manual
1-1
1.2 Related Documents
1-1
1.3 General Description 1-2
SECTION 2 SPECIFICATIONS
2.1
Storage Capability
2-1
2.2 Functional Specifications
2-1
2.3 Environmental Specifications 2-2
2.4 Reliability Characteristics 2-3
2.5 Power Requirements 2-4
2.6 Physical Dimensions, Weight and Mounting 2-5
SECTION 3 INSTALLATION
3.1 Mounting Orientation
3-1
3.2 Cooling and Disk Drive Enclosures 3-1
3.3 Switch and Jumper Functions 3-2
3.3.1 PJ7 Jumper Functions 3-3
3.3.2 PJ5 and
PJ31 Jumper Functions 3-4
3.3.3 PJ32 Jumper Functions 3-4
SECTION 4 INTERFACE
4.1
Control Cable 4-1
4.2 Data Cable
4-1
4.3 Control Cable Pin ASSignments 4-2
4.4 Data Cable Pin Assignments 4-3
4.5 ESDI Commnad Configuration and Functions 4-4
4.6 Request Status Command 4-5
4.7 Configuration Data Command Modifiers 4-6
4.8 Configuration Data Response 4-7
4.9 Control Command Modifiers 4-7
4.10 Data Strobe Offset Command 4-8
4.11 Track Offset Command 4-8
SECTION 5 DATA FORMATS
5.1 Hard Sector Format 5-1
5.2 Soft Sector Format
5-1
5.2.1 Speed Variance Gap 5-2
5.3 Defect Map Format 5-2
SECTION 6 MAINTENANCE CONSIDERATIONS
6.1
Equipment Maintenance
6.1.1 In-Warranty Maintenance
6-1
6.1.2 Out-of-Warranty Maintenance 6-1
6.1.3 Equipment Return Instructions
6-1
-ii- MK-1S0FA Series
OEM Manual

TABLE LIST
TABLE TITLE PAGE
1 Related Documents
1-1
2 Storage Capability
2-1
3 Functional Specifications 2-1
4 Environmental Specifications 2-2
5 Reliability Characteristics 2-3
6 Power Requirements 2-4
7 PJ7 Jupmpers for 65 x 256 byte 3-3
8 Common PJ7 Jumper Configuration 3-4
9 Control Cable Pin Assignments 4-2
10 Data Cable Pin Assignments 4-3
11 ESDI Command Configuration 4-4
12 ESDI Command Functions 4-4
13 Request Status Command 4-5
14 Configuration Data Command Modifiers 4-6
15 Configuration Data Response 4-7
16 Control Command Modifiers 4-7
17 Data Strobe Offset Command Modifier Bits 4-8
18 Track Offset Command Modifier Bits 4-8
FIGURE LIST
FIGURE TITLE PAGE
1 MK-150FA Dimensions and Mounting Holes 2-5
2 Mounting Orientation
3-1
3 Clearance Requirements
3-1
4 Switch and Jumper Settings 3-2
5
SW1 (Switch 1) Functions 3-2
6 SW2 (Switch
2) Functions 3-2
7 PJ32 Jumper 3-4
8 Hard Sector Format
5-1
9 Soft Sector Format 5-2
10 Defect Map Format 5-3
MK-150FA Series OEM Manual -iii-

SECTION 1
INTRODUCTION
1.1 PURPOSE OF MANUAL
Thepurpose ofthis manualistodescribethe MK-150FASeries5.25-inchfixed diskdrivestothe levelof detail
required for product integration.
System designers planning to develop a custom controller and others who require additional product
information should refer to the MK-150FA Series Product Specification for more details.
1.2 RELATED DOCUMENTS
Detailedproductandinterfacinginformationisgiveninthe MK-150FASeries ProductSpecificationI docu me nt
number 71Y101397.
Table 1 lists OEM Manualsthat are available for otherToshiba disk products. The MK-150FA is included to
indicate how its storage capacity compares to other disk products available from Toshiba.
Toshiba Media Storage Unformatted
Type Of
Document
Product
Size
Technology Capacity (MB) Interface Number
MK-134FA 3.5 Winchester 23 to 53 ST506/412 DW32-01-012
MK-50FB 5.25 Winchester 43 to
86 ST506/412 DW54-01-006
MK-150FA 5.25 Winchester 86 to 173 ESDI DW54-01-007
MK-250FA 5.25 Winchester 382.5 ESDI DW54-01-014
MK-180FB 8.0 Winchester 83 to 166 SMD DW80-01-008
MK-280FC 8.0 Winchester 340 to 510 HSMD DW80-01-009
MK-388FC 8.0 Winchester 720 HSMD DW80-01-013
Table 1 - Related
Documents
Contactyournearest Toshiba Disk Products Division Sales Representative to ordera manual or obtain more
detailed technical information.
1-1
MK-150FA Series OEM Manual

1.3 GENERAL DESCRIPTION
The MK-150FASeries is a family of 5.25-inch Winchester disk drives designed primarily to be incorporated
into systems supporting multi-user and multi-tasking applications. Three models comprise the MK-150FA
Series: MK-153FA (86.5 MB), MK-154FA (121 MB) and MK-156FA (173 MB).
All drives comply with the ST506/412 size, mounting and power requirements
The MK-150FA Series supports the Enhanced Small Disk Interface (ESDI). ESDI provides device level
capabilities for multi-spindle
or highly optimized applications.
The positioning system utilizes a rare earth magnet and a rotary voice coil actuatorto provide a 25 millisec-
ond average
seek time and a 45 millisecond maxim~m seek time.
The Head Disk Assembly (HDA) is enclosed in a die cast aluminum base plate and shroud and incorporates
numerous safety features to maximize reliability:
The base plate and shroud assembly provides mechnical mounting and EMI (Electronic
Magnetic Interference) shielding for the heads, disks and actuator.
The sealed assembly incorporates an airrecirculatory system and a 0.3 micron lifetimefilter
to ensure a contamination-free environment and even thermal distribution.
A barometric filter
in the HDA provides ambient pressure equalization.
When power is removed, a fail-safe system automatically returns the heads to a dedicated
landing zone and a solenoid automatically locks the carriage in this location. This prevents
head and media damage during transit.
Use of a center stack servo system improves head positioning accuracy across the full environmental
operating range and allows servo writing to be performed with the disk stack mounted in the drive.
Careful planning in regard to the location of components on the circuit card, especially those with electrical
noise potential, contributes to very low levelS of read channel noise and enhances data recovery.
To further reduce read channel
nOise, DC voltages are filtered before being used on the read channel.
Extensive use of VLSI minimizes the number of components and optimizes MTBF (Mean Time Between
Failures).
MK-150FA Series OEM Manual 1-2

SECTION 2
SPECIFICATIONS
2.1 STORAGE CAPABILITY
STORAGE CAPACITY MK-153FA MK-154FA MK-156FA
Unformatted Capacity 86.5
MB 121.0 MB 173.0 MB
Number of Disks 3 4 6
Number of Data ReadlWrite Heads 5 7 10
Number of Tracks 4,150 5,810 8,300
Table 2 - Storage Capability
2.2 FUNCTIONAL SPECIFICATIONS
Specifications are the same for all models
Number of Cylinders
Track Capacity
Tracks per Inch
Bits per Inch
Flux Changes per Inch
Recording Method
Data Transfer Rate
Head Recovery Time:
Head Change
Write to Read
Seek Time: (includes settling)
Track-to-Track
Average
Full Stroke
Start Time
Stop Time
Rotational Speed
Average Latency Time
Maximum Latency Time
Acoustic Noise
830
20,832 Bytes
900 TPI
18,766 BPI
12,510 FCI
2,7 (RLL)
10.0 Megabits per Second
13 Microseconds
8 Microseconds
5 Milliseconds
23 Milliseconds
45 Milliseconds
20 Seconds Typical- 30 Seconds Maximum
20 Seconds Typical -30 Seconds Maxim um
3,600 RPM ± 1%
8.33 Milliseconds
17.10 Milliseconds
50 dBA at 3.0 Feet (1 Meter)
Table 3 - Functional Specifications
2-1
MK-150FA Series OEM Manual

2.3 ENVIRONMENTAL SPECIFICATIONS
Specifications are the same for all models
Operating Environment:
Ambient Temperature
41 ° to 122° F (5° to 50° C)
Temperature Gradient 27° F per Hour (15° C)
Maximum Wet Bulb 84° F (29° C)
Relative Humidity 20
to 80%, No Condensation
Altitude -1000 to 10,000 Feet
(-300 to 3,000 Meters)
Vibration (all axis) 0.25 G Peak at 5-200 Hz
:Shock (recoverable errors allowed) 10.0 G Peak*
Cooling:
Convection Cooling Any enclosure (see Section 3) must
allow the drive to operate within specified
environmental limits.
Non-Operating (Unpacked) Environment:
Ambient Temperature 14° to 122° F (-10° to 50° C)
Temperature Gradient 27° F per Hour (15° C)
Relative Humidity 1
0 to 80%, No Condensation
Altitude -1,000 to 10,000 Feet
(-300 to 15,000 Meters)
Vibration 0.5 G/0.04 Inch (1.0mm) at 5-200 Hz
Shock 40.0 G Peak*
Storage (Packed) Environment:
Ambient Temperature -40° to 140°F (-40° to 60° C)
Temperature Gradient 27° F per Hour (15° C)
Relative Humidity 5
to 90%, No Condensation
Altitude -1,000 to 49,000 Feet
(-400 to 15,000 Meters)
Vibration 2 G/0.1 Inch (2.5mm) at 5-400 Hz
Shock (maximum free drop)
27 Inches (0.7 Meter)
*When fixed to a rigid structure (excluding resonance) and when an 11 millisecond half-sine-wave impulse is applied to
the rigid structure.
Table 4- Environmental Specifications
MK-150FA Series OEM Manual 2-2

2.4 RELIABILITY CHARACTERISTICS
CHARACTERISTIC
Media Defects:
Maximum Defects per Surface
Maximum Defects per Drive
MK-153FA MK-154FA MK-156FA
20
50
20
70 20
100
At the time offactory shipment, Track00, Heads0and 1havenomediadefectsandnodefectisgreaterthan 11 bits in length.
A defectmap, identifying the location
of known mediadefects by cylinder, head andnumber of bytes from Index, is attached
to the drive. The defect map is also recorded on the disk
in the ESDI specified format (see Section 5).
Error Rates:
Recoverable
Unrecoverable
Seek
Preventive Maintenance
Mean Time Between Failures (MTBF)*
Mean Time To Repair (MTTR)
Service Life
1 in 10
10
Bits
1 in 10
12
Bits
1
in 106 Seeks
Not Required
30,000 Hours
Less than 30 minutes
5 Years
* A failure isdefinedas the drive's inability to perform to specification when operatedwithin thedefined limits. Exclusions
are shipping and handling damage and operator, user, service, environmental
or system induced faults.
Table 5 - Reliability Characteristics
2-3 MK-150FA Series
OEM Manual

2.5 POWER REQUIREMENTS
Requirements are the same for al,1 models
+5 VDC±5%:
Current
Allowable Ripple/Noise
+12 VDC±5%:
Power-On Current
Seek Operation Current
On-Track Current
Allowable Ripple/Noise
Power Consumption
DC Power Connector:
Power Plug Pin Assignment:
I (0 0 ® 0J I
(as viewed from rear of drive)
2.0 Amperes Maximum
1.5 Amperes Typical
100 Millivolts Peak-to-Peak
4.0 Amperes Maximum
3.5 Amperes Average
4.5 Amperes Maximum
3.0 Amperes Average
2.2 Amperes Maximum
1.7 Amperes Average
100 Millivolts Peak-to-Peak
30 Watts Nominal
60 Watts Starting
AMP 480424 with pin (strip) 3500784
or pin (loose) 61173-4, or equivalent.
Pin Number
1
2
3
4
Assignment
+12 VDC
+12 VDC Return
+ 5 VDC Return
+
5VDC
Table 6- Power Requirements
MK-150FA Series OEM Manual 2-4

2.6 PHYSICAL DIMENSIONS, WEIGHT AND MOUNTING
The Nominal dimensions and weight of the MK-150FA are as follows (also see Figure 1):
Height:
Width:
Depth:
Weight:
3.25 ± 0.04 Inches (82.5 ± 1 Millimeter)
5.75 ± 0.04 Inches (146.1 ± 1 Millimeter)
8.0 ± 0.04 Inches (203 ±3 Millimeters)
6.6 Pounds (3 Kilograms)
:<!:: ...................................................................... S,.1.3.~ ........................................................................... ;
I:::. : O.OS" (203.2mm) I::.
i(1.Smm)
r·············
3.38"
(85.8mm)
i-'
1··················:1.
~~~~~~~~~~~~~~~~~~~~~ (82.5mm)
,
,
0.8S"
(21.8mm)
, ... ~ ............... Wl __ -_~-------- ..... -~~-- ............................................ '>1. •• ,
0.19" !! 1.87"! 3.12" !
(4.ii"mmf1 '~···(4f·4mmr·····~············'·····(79:·2mm)········ ........... !>i
...... /,\ ..... .
5.87"
(1493mm)
: 1.87": 3.12"
:c!: ••••••••••.••••••••••••••••••••• ~ ........................................... ..
I (47.4mm) ~ (79.2mm)
5.50"
(139.7mm)
(four on bottom,
two on each side)
5.75"
(14S 1mm)
...... ~ ........
U~~~~~::::::I""" ..... =.J ..................................... y..
iO.OS" (1.Smm)
Figure 1 - MK-1S0FA Dimensions and Mounting Holes
2-5 MK-150FA Series
OEM Manual

SECTION 3
INSTALLATION
3.1 MOUNTING ORIENTATION
The location of the mounting holes is shown in Figure 1. Recommended mountingorientations are shown in
Figure
2.
...--
o
111111111111101 Q
Vertically Left side down Horizontally Circuit card down Vertically Right side down
Figure 2- Mounting Orientation
3.2 COOLING AND DISK DRIVE ENCLOSURE
Convection COOling is used. It is recommended that cabinetry design allow for air flow. The disk enclosure
mustbedesignedto maintain an eventemperature withinthe drive'senvironmental limits andthroughoutthe
drive's various components. Minimum clearance requirements
for a disk enclosure are shown in Figure 3.
: 6.06" :
~ ............................................................................................................................................. ~
! (154mm) !
: :
~ ~
i ~
···f·················..! ... ; ......... -. ............................................................................................. ··························~:::1:::::;j! ... , •. 016"
I (4mm)
3.56"
(905mm)
~~J
\ ~ ~oooo~ I! !' ..R .............. .
I I . ''A
, ---..... • • I I ........ ! ! 1.2"
, , , '! 1(30mm)
, G;? ~~i
.JI....................: .. :..5 ................................................................................ · .......... · ...... · ........ · ...... · .. ···· .. · .. ·r.::~··r~:::::::<E····.1·016"
! ! ! ! (4mm)
... :~.!.~.: ... J L.. .......................................... _ .............. §.,?:§.: ............................. -. ........................... Jl .... :Qw ... .
(4mm) . . (146mm) :: (4mm)
Figure 3 - Clearance Requirements
3-1 MK-150FA Series OEM Manual

3.3 SWITCH AND JUMPER FUNCTIONS
Referto Figure 4 for switch and jumperlocations. All DI P switches and jumpers mustbe set before applying
power to thedrive. Switch 1 (SW1) functions are shown in Figure 5. Switch 2 (SW2) sets drive 1.0. and short
or long last sector mode. See Figure 6 for settings. .
4
3
2
1
ON
41]
3 .:J SW1
2 .:J
1 .:J
1 2 3 1 2
34
PJ5m
I~~~~I
SW2
Figure 4 - Switch and Jumper Settings
ON =Write Protected
OFF =Write Unprotected SPINDLE SWITCH POSITION
Spindle Start-up Delay
(see Table)
ON =Hard Sector Mode
OFF =Soft Sector Mode*
START-UP DELAY
oSeconds
8 Seconds
16 Seconds
24 Seconds
2
OFF
OFF
ON
ON
* See Section 5 for Data Format Information
3
OFF
ON
OFF
ON
See Page 3-3 for Hard Sector length selecting using PJ7
See Page 3-4 for PJ5 jumper definitions
Figure 5 - SW1 (Switch 1) Functions
DRIVE
1 2 3
f1
2 3 4
(22) (21)
(2°)
OFF OFF
ON 1
OFF ON OFF 2
OFF
ON ON 3
Drive Select
ON
OFF OFF 4
ON
OFF ON 5
* Switch 4 sets short or long last
ON ON
OFF 6
sector mode (see section 3.3.1)
ON ON ON
7
Figure 6 - SW2 (SwHch 2) Functions
MK-150FA Series OEM Manual 3-2

3.3.1 PJ7 Jumper Functions
When operating in the hard sector mode, jumpers PJ7 is used to set the sector length and the number of
sectors per track.
To determine sector parameters, it is necessary to calculate the unformatted bytes per sector, which in turn
depends
on usable sector length and sector overhead, as follows:
Unformatted bytes per sector = usable sector length + overhead
Usable sector length is selected to meet system file size requirements. Overhead depends on controller
format, but
is typically 64 bytes in hard sector mode.
After the value of unformatted bytes per sector is determined, the number of sectors pertrack is calculated
as follows:
Sectors per Track = 20 832 (number of bytes per track)
Unformatted bytes per sector
The result of this calculation is rounded to the next lower whole number. This numberrepresents the number
of whole sectors pertrack.
Example:
Desired usable sector length = 256 user bytes plus 64 overhead bytes
Unformatted bytes per sector =
256 + 64 = 320
Sectors per Track = T = 65.1
Number of whole sectors per track = 65 (next lower whole number)
To set number of sectors pertrack in the drive, the PJ7 jumpers are configured to a binary value that is one
less than the numberof whole sectors pertrack. In the above example (to set 65 sectors per traCk), the PJ7
jumpers are set to 64 (65 minus 1) (see Table 7).
Jumper Pin Position
8 7 6 5 4 3 2 1
Binary Value 128 64 32 16 8 4 2 1
PJ7 Jumper
OUT
IN
OUT OUT OUT OUT OUT
OUT
Note: Jumper In =1; Jumper Out =0
Table 7 - PJ7 Jumpers for 65 x 256 byte Sectors perTrack
In most cases, the sectors will not exactly fill the whole traCk, leaving some residual bytes, for example 32
as determined below.
Residual bytes = 20,832 -(unformatted bytes per sector x number
of whole sectors per track)
20,832 - (65 x 320) = 32
If the SW2 position 4 is OFF, any residual bytes will be added into the last sector. In the above example, the
first
64 sectors will have 320 bytes each and the last sectorwill have 352 bytes (320 + 32 residual bytes).
If SW2 switch position 4 is ON, any residual bytes will be added as an extra sector. In the above example,
there will
be 65 sectorswith 320 bytes eachplus one additionalsectorcontaining 32 bytes (the residual bytes).
Table 8 shows common format selections.
3-3 MK-150FA Series
OEM Manual

Jumper Pin Position 8 7 6 5 4 3 2 1
Binary Value 128 64 32
16
8 4 2 1
108 Sectorswith 128 User Bytes
OUT
IN IN
OUT IN
OUT
IN IN
Binaryvalue =107
65 Sectors with 256 User Bytes
OUT IN
OUT OUT OUT OUT
OUT
OUT
Binaryvalue =64
36 Sectors with 512 User Bytes
OUT OUT IN
OUT OUT
OUT
IN IN
Binaryvalue =35
19 Sectors with 1024 User Bytes
OUT OUT OUT IN
OUT OUT IN OUT
Binaryvalue =18
Note: Jumper In =1; Jumper Out =0
Table 8 - Common PJ7 Jumper Configurations
3.3.2 PJ5 and
PJ31 Jumper Functions
Forfactory use only
.3.3.3 PJ32 Jumper Functions
The PJ32 Jumper Selects the drive's LED color. R selects Red, G selects green. (see Figure 7).
R
Figure 7 - PJ32 Jumper
MK-150FA Series OEM Manual 3-4

SECTION 4
INTERFACE
4.1 CONTROL CABLE
The daisy-chained Control Cable is a flat cable consisting of 17 twisted pairs (34-conductors).
The 34-position connector recommended for the Control Cable
is AMP part number 88373-3, or
equivalent.
Maximum cable length is
20 feet (6 meters).
Control Cable signals are TTL compatible.
With the exception of DRIVE SELECT, Control Cable signals are inhibited until the drive is selected.
In a daisy-chain configuration, the 16-pinterminator chip, located on an IC socket on the main circuit card,
must be installed on only the last drive in the daisy-chain.
Pin assignments forthe Control Cable are shown
in Table 9.
4.2 DATA CABLE
The star-configured Data Cable, is a flat cable consisting of 10 twisted pairs (20-conductors).
The 20-position connector recommended for the Data Cable
is AM P part
number 88373-6,
or equivalent.
Maximum cable length is 10 feet
(3 meters).
The following Data Cable signals are differential signal pairs:
Write Clock (pins 7 &
8)
Read/Reference Clock (pins 10 &11)
NRZ Write Data (pins 13 & 14)
NRZ Read Data (pins 17 & 18)
The following Data Cable signals are TTL compatible:
Drive Selected (pin 1)
Sector/Address Mark (pin
2)
Address Mark Enable (pin 4)
Index Mark (pin 20)
Data Cable differential signals are enabled at all times, regardless of the drive's selected status. Pin
assignments for the Data Cable are shown
in Table 10.
4-1
MK-150FA Series OEM Manual

4.3 CONTROL CABLE PIN ASSIGNMENTS
PIN NUMBERS
SIGNAL NAME SIGNAL GROUND MK-1S0FA*
HEAD SELECT 23 2 1 Input
HEAD SELECT 22
4 3 Input
WRITE GATE 6 5 Input
CONFIGISTATUS DATA 8 7 Output
TRANSFER ACK 10 9 Output
ATTENTION 12
11
Output
HEAD SELECT 2° 14 13 Input
SECTOR/ADDRESS MARK 16 15 Output
HEAD SELECT 21
18 17 Input
INDEX 20 19
Ou~put
READY 22
21 Output
TRANSFER REQUEST 24 23 Input
DRIVE SELECT 1 26 25 Input
DRIVE SELECT 2 28 27 Input
DRIVE SELECT 3 30 29 Input
READ GATE 32 33 Input
COMMAND DATA 34 N/A Input
* "Input" means input to drive; "Output" means output from drive
Table 9 - Control Cable Pin Assignments
MK-150FA Series OEM Manual 4-2

4.4 DATA CABLE PIN ASSIGNMENTS
SIGNAL NAME
PIN NUMBERS MK-1S0FA*
DRIVE SELECTED 1 Output
SECTOR/ADDRESS MARK 2 Output
COMMAND COMPLETE 3 Output
ADDRESS MARK ENABLE 4 Input
RESERVED 5 N/A
GROUND 6 N/A
+ WRITE CLOCK 7 Input
-WRITE CLOCK 8 Input
RESERVED 9 N/A
+ READ/REFERENCE CLOCK 10 Output
-READ/REFERENCE CLOCK
11
Output
GROUND
12 N/A
+ NRZ WRITE DATA 13 Input
-NRZ WRITE DATA 14 Input
GROUND
15 N/A
GROUND 16 N/A
+ NRZ READ DATA
17 Output
-NRZ READ DATA
18 Output
GROUND
19 N/A
INDEX 20 Output
* "Input" means input to drive; "Output" means output from drive
Table 10- Data Cable Pin Assignments
4-3 MK-150FA Series
OEM Manual

4.5 ESDI COMMAND CONFIGURATION AND FUNCTIONS
COMMAND DEFINITION BITS
15·12
BITS 11 - 8 BITS
11 ·0
USED? USED?
Seek 0 0 0 0 No Yes
Recalibrate 0 0 0 1 No No
Request Status 0 0 1 0 No No
Request Configuration 0 0 1 1 Yes
No
Track Offset 0 1 0 0 --
Control 0 1 0 1 Yes No
Data Strobe Offset 0 1 1 0 Yes No
Track Offset 0 1 1 1 Yes No
Initiate Diagnostics 1 0 0 0 No
No
Set Bytes per Sector 1 0 0 1 No Yes
Reserved 1 0 1 0 --
Reserved 1 0 1 1 --
Reserved 1 1 0 0 --
Reserved 1 1 0 1 --
Set Configuration 1 1 1 0 Yes Yes
Reserved 1 1 1 1 --
• All unused or non-applicable bits must be set to O.
• All unimplemented or reserved commands are invalid.
• Data Strobe and Track Offset can be simultaneously enabled by sending two
separate commands.
Table
11 -ESDI Command Configurations
COMMAND DEFINITION BITS
15 ·12
DRIVE ACTION
Seek* 0 0 0 0 Seek to the track specified
in bits 11-0
Recalibrate* 0 0
~O
1 Seek to track 00
I
nitiate Diagnostics 1 0 0 0 Perform drive diagnostic test
Set Bytes per Sector 1 0 0 1 Set to binary value in bits 11 - 0
* Also resets Data Strobe offset and Track Offset
Table 12-ESDI
Command Functions
MK-1S0FA Series OEM Manual 4-4

4.6 REQUEST STATUS COMMAND
BIT
POSITION
15
14
13
12
11 .
10
9
8
7
6
5
4
3
2
1
o
P
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
DEFINITION
Reserved
Drive is not designed with removable media
Removable media is write protected
Fixed media is write protected
Reserved
Reserved
Spindle motor is stopped
Power-on reset condition
Parity error detected in command data
Interface
fauH
Invalid or unimplemented command received
Seek fault detected
Write gate received with track offset implemented
Vendor unique status
Write
fauH condition
Removable media changed
since last status request
Odd Parity
Response =1 when write protect switch (SW1-4) is ON.
Response =0 when write protect switch (SW1-4) is OFF.
DRIVE
RESPONSE
o
1
o
Note 1
o
o
Note 2
Note 3
0/1
Note 4
0/1
Note 5
0/1
o
Note 6
o
0/1
Response =1 when the spindle motor is stopped by acontrol command or apower-on
reset condition.
Response = 0 when spindle motor is stopped QY another cause orwhen the spindle is
rotating.
Response = 1 if voHage fault, spindlespeed out of tolerance, spindle speed not achieved
in 20 seconds, abnormal servo signal, AGC error, or overheated voice
coil
is detected, or if the outer guard band or data zone is not detected.
Response =0 when none of the above conditions are present.
Response =1 if a transfer request is received while Command Complete is false, or if
the handshake between transfer request and transfer acknowledge is
not completed within 10 milliseconds.
Response =0 when none of the above conditions are present.
Response =1if an overcurrent in voice coil, no data zone, AGC error, or seek time-out
is detected.
Response = 0 when none of the above conditions are present.
Response =1 if voltage is out-of-tolerance, write and read gates are simultaneously
activated, write gate
is OFF and write current is detected, write gate is
ON and no write current is detected, no head is selected, write protect
switch
(SW1-4) is ON, heads are not on-cylinder.
Response =0 when none of the above conditions are present.
Table 13 - General Status Data
4-5 MK-150FA Series
OEM Manual