Samsung SFD-321B/LFHSE manual

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  • Brand: Samsung
  • Product: Computer accessory
  • Model/name: SFD-321B/LFHSE
  • Filetype: PDF
  • Available languages: English

Table of Contents

Page: 0
SEMA ELECTRONICS CO.,LTD
OEM MANUAL
SFD-321B
3.5inch DUAL DENSITY
MICRO FLOPPY DISK DRIVE
SPECIFICATIONS
SEMA ELECTRONICS CO.,LTD
XiaLingBei HengKeng Management Area
Liaobu Town Dongguan City
Guangdong Province, China
FDD
Page: 1
SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 1
MODEL SFD-321B
CONTENTS
1. INTRODUCTION
1.1 Application
1.2 Disk Used
2. GENERAL SPECIFICATIONS
2.1 Performance
2.2 Environmental Conditions
2.3 Reliability
2.4 Power Supply
2.5 Physical Specifications
3. INSTALLATION
4. ELECTRICAL INTERFACE
4.1 Signal Interface
4.2 Power Interface
4.3 Interface Connectors
5. SIGNAL CHARACTERISTICS
5.1 Signal Level
5.2 Recommended Interface Circuit
5.3 Input Signals
5.4 Output Signals
6. TIMING DIAGRAM
6.1 Seek Operation Timing
6.2 Read / Write Operation Timing
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 2
MODEL SFD-321B
7. SAFETY STANDARDS
8. PACKAGING DESCRIPTION
8.1 Label Description
8.2 Packaging Method
8.3 Pallet Dimension and the Method
9. OPTION SELECTION
9.1 Trace Options
9.2 Other Options (Buyer Selection)
10. GENERAL COMMENT
※ LIST of FIGURES
Figure 2-1. Physical Dimensions (With Bezel Type)
Figure 2-2. Physical Dimensions (Without Bezel Type)
Figure 3-1. Installation
Figure 4-1. Signal Interface Connector and Cable Side Connector
Figure 4-2. Power Interface Connector and Cable Side Connector
Figure 4-3. Rear View of FDD
Figure 8-1. Packaging Method
Figure 8-2. Pallet Dimension & Method
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 3
MODEL SFD-321B
1. INTRODUCTION
1.1 Application
This manual shall be applied for SAMSUNG SFD-321B - double side, dual
density (option : 3 mode), 3.5 inch micro floppy disk drive
(hereinafter referred to as "FDD").
1.2 Disk Used
3.5 inch micro floppy disks (hereinafter referred to as "DISK"),
the use of which will be mutually agreed between the customers and
SAMSUNG, shall be used.
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 4
MODEL SFD-321B
2. GENERAL SPECIFICATIONS
2.1 Performance
I T E M
LOW
DENSITY
STANDARD
1MB
HIGH
DENSITY
STANDARD
2MB
HIGH
DENSITY
*OPTION*
1.6MB
Capacity
(KBytes)
Unformatted
Per Disk 1000 2000 1600
Per Track 6.25 12.5 10.0
Formatted
Per Disk
(Sector / Track)
655.4 (16) 1310.7 (32) 1065.0 (26)
737.3 (9) 1474.6 (18) 1228.8 (15)
819.2 (5) 1638.4 (10) 1310.7 (8)
Recording Density (BPI)
-Inner Most Track, side 1
8,717 17,434 14,528
Data Transfer Rate (KBits / sec)
-MFM recording
250 500
Number of Heads 2
Number of Tracks 160
Track Density (TPI) 135TPI (5.33 Tracks / mm)
Drive Motor
Specification
Rotational Speed 300 RPM 360 RPM
LSV ± 1.5 % Max.
ISV ± 1.5 % Max.
Start Time 500 ms Max.
Access Time
Track to Track
Time
3 ms
Head Settling Time 15 ms Max.
Head 0 / Head 1 Offset
Head 1 is displaced 8 tracks toward the
drive spindle direction.
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 5
MODEL SFD-321B
* Read/Write Compensation : 125ns is recommended
I T E M
LOW
DENSITY
STANDARD
1MB
HIGH
DENSITY
STANDARD
2MB
HIGH
DENSITY
*OPTION*
1.6MB
Media Operating
Force
Inserting 800 gr Max.
Ejecting 1300 gr Max.
Media Ejecting Distance 10 ~ 70 mm
Acoustic Noise at 50 cm
- at 3 ms Step Rate
50 dBA Max.
Read Bit Shift 1300 ns Max. 650 ns Max.
1. Measured with Brikon 723B on Track 79
with 0 ns precompensation on both heads.
Asymmetry 600 ns Max. 300 ns Max.
1. Measured with Brikon 723B on Track 00
with 0 ns precompensation on both heads.
Radial Alignment
Both R/W heads must be radially aligned to all tracks
within ±0.0200 mm when accessed from either
direction.
Measurement is to be made at normal voltage and
normal environmental condition
(23±2 ℃ and 50±5 % RH)
Azimuth Alignment ±0 °18′Max.
Index to Data Burst
0 ~ 1300 μs
Measurement is to be made from the leading edge of
index pulse to the beginning of data burst on
Track 40.
Overwrite Modulation -26 dB or less at Track 00
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 6
MODEL SFD-321B
2.2 Environmental Conditions
ITEM SPECIFICATION
Ambient
Temperature
Operating (℃) 0 ∼ 50
Storage (℃) -40 ∼ 70
Transportation (℃) -40 ∼ 70
Temperature Gradient
(℃ / Hr)
Operating 20 Max.
Non-operating 30 Max.
Relative
Humidity (%)
*No-condensation
Operating : 29 ℃ Max. wet bulb temp. 20 ∼ 80
Storage : 40 ℃ Max. wet bulb temp. 0 ∼ 90
Transportation : 45 ℃ Max.
wet bulb temp.
0 ∼ 90
Vibration
(30 min. sweep
cycle)
*Exclude
resonant
frequency
Operating
5 ~ 100 Hz frequency range 1.5 G Max.
100~ 200 Hz frequency range 1.0 G Max.
200~ 600 Hz frequency range 0.5 G Max.
Transportation : 5 ~ 600 Hz
frequency range
3 G Max.
Shock (11 ms
half sine wave)
Operating 5 G Max.
Transportation 100 G Max.
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 7
MODEL SFD-321B
2.3 Reliability
<Note>
(*1) A soft (recoverable) error is defined as a successful attempt to read a track
of data within 3 retries after a read failure.
A read retry is defined as an attempt to read the entire track that a read
failure occurred on.
(*2) A hard (non-recoverable) error is defined as a failure to read a track of
data within 3 retries after a read failure.
(*3) A seek (access) error is defined as the inability of the drive to seek to
a targeted track within 1 retry. An access retry is defined as one recalibration
with an attempt to seek to the targeted track.
I T E M SPECIFICATION
M.T.B.F.(Mean time between failures)
20000 power on hours (POH)
(25% duty)
M.T.T.R.(Mean time to repair) 30 minutes Max.
Component Life 5 years
Disk Life 3×106
passes per track or more
Disk Insertion 3×104
times or more
Error Rate
Soft Read Error
(*1)
1 per 109
bits read
Hard Read Error
(*2)
1 per 1012
bits read
Seek Error
(*3)
1 per 106
seeks
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 8
MODEL SFD-321B
2.4 Power Supply
<Note>
(*1) Typical values are specified at 5.0 V
(*2) Stand-by : Under the condition that all input lines are inactive.
I T E M SPECIFICATION
Required Power D.C. 5 V ± 10 %
Allowable Ripple Voltage 100 mVp-p (including spike noise)
Power
Consumption
Operating Mode
Average Current Average Power
Typ. Typ.
Stand - by 2 mA 10mW
Read Operation 0.3 A 1.5 W
Write Operation 0.3 A 1.5 W
Seek Operation (3 ms) 0.7 A 3.5 W
Drive Motor Start 0.7 A 3.5 W
0.7 A Typ.
0.7 A Typ.
500 ms Max.
+5 V (*1)
Current (A)
2 mA
18 ms Max.
0.3 A
Stand-by
(*2)
Spindle motor ON Read /
Write
Seek
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 9
MODEL SFD-321B
2.5 Physical Specifications
I T E M SPECIFICATION
Mechanical
Dimension
Width (mm) 101.6
Height (mm) 25.4
Depth (mm) 145.0 (without Front Bezel)
Weight (gr) 460.0 typ.
External View Refer to Fig. 2-1 and Fig. 2-2
Installation Holes Refer to Fig. 2-1 and Fig. 2-2
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 13
MODEL SFD-321B
4. ELECTRICAL INTERFACE
4.1 Signal Interface
<Note>
(*1) All odd numbers : GND
4.2 Power Interface
Density Select
In Use (Spare)
Drive Select 3 (Spare)
Index
Drive Select 0
Drive Select 2 (Spare)
Drive Select 1
Motor On
Direction Select
Step
Write Data
Write Gate
Track 00
Write Protect
Read Data
Side Select
Ready/Disk Change
34
32
30
28
26
24
22
20
18
16
14
12
2
6
10
8
4
HOST
CONTROLLER
SYSTEM
FDD
SFD-321B(*1)
+5 V
+5 V Return (GND)
No Connection (GND)
No Connection
1
2
4
3
FDD
SFD-321B
HOST
CONTROLLER
POWER
SUPPLY
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 14
MODEL SFD-321B
4.3 Interface Connectors
4.3.1 Signal Interface Connector
<Note>
(*1) 33 pins, 2.54 pitch (Pin #3,5,7,9,13,15,17,19,23,25,27,31 : cut off)
Wall Type
(*2) Cable length : 1m (3.3 feet) Max.
< Signal Interface Connector (FDD) > < Cable Side Connector (HOST) >
Fig 4-1. Signal Interface Connector and Cable Side Connector
Side Connector
FDD HIROSE P/N 5003-001-7347 or equivalent (*1)
HOST (Connector) 3M NO. 7934 or equivalent
HOST (Cable) 3M 3365/34 or equivalent (*2)
Rear View
PIN NO.3,5,7,9,13,15,17,19,23,25,27,31 : Cut off
2 4 ~ 34
1 3 ~ 33
PCB
Top View
FRONT
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 15
MODEL SFD-321B
4.3.2 Power Interface Connector
< Power Interface Connector (FDD) > < Cable Side Connector (HOST) >
Fig 4-2. Power Interface Connector and Cable Side Connector
Side Connector
FDD ELCO P/N 9251-004-000-809 or equivalent
HOST (Connector) AMP 171822-4 or equivalent
HOST (Cable) AWG #20-26
4 3 2 1
Rear View
Top View
PCB
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 16
MODEL SFD-321B
5. SIGNAL CHARACTERISTICS
5.1 Signal Level
<Note>
(*1) "LOW" level Max. sink current is 48 mA.
5.2 Recommended Interface Circuit
Signal Logic Input Level Output Level (*1)
Low (True) 0.9 V Max. 0.4 V Max.
High (False) 2.2 V Min. 2.4 V Min.
FRAME GND
OUTPUT
OPEN DRAIN
CMOS
(SCHMITT TRIGGER INPUT)
INPUT
150 Ω∼2.2 ㏀
(1 ㏀ is recommended)
Vdd
Vdd
7438 SERIES
CMOS OR
EQUIVALENT
74LS14
74HC14 OR
EQUIVALENT
FDD SIDE
(1 ㏀ )
HOST SIDE
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
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MODEL SFD-321B
5.3 Input Signals
5.3.1 Density Select
This siganl is used to distinguish between 1.6MB and 2MB Mode.
The interface pin No.2 can be used as Density Select Input signal by
attaching 0 Ω resistor onto "OPA" short plug when the High density media
is inserted. The "HIGH" level designates 2MB Mode and the "LOW" level
designates 1.6MB Mode. FDD can tell whether the inserted media is high
or Low density by checking the signal coming from mechanical switch which
detects the density selecting hole on the media.
5.3.2 Drive Select 0 and 1
Two trace plugs on the PCB, DS0 and DS1 are provided to select which
Drive Select line will activate the interface signals for a unique drive in the
daisy chain connection up to two drive units. Drive Select, when activated
logical "LOW", enables all the I/O lines except Motor On line.
This signal also controls the lightening of In-Use LED.
Type Contents
2 Mode
(2.0 / 1.0MB)
(Non-connection of "OPA")
Automatic Switching
2.0MB : If High density media is inserted.
1.0MB : If Low density media is inserted.
3 Mode
(2.0 / 1.6 / 1.0MB)
(Connection of "OPA")
Automatic Switching with "Density Select"
2.0MB : If High density media is inserted
with "Density Select" is "HIGH".
1.6MB : If High density media is inserted
with "Density Select" is "LOW".
1.0MB : If Low density media is inserted
"Density Select" is not available.
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
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MODEL SFD-321B
5.3.3 Motor On
Logical "LOW" level of this signal makes the spindle motor be turned on.
The motor reaches to the rated rotational speed within 500 ms after this
signal changes to "LOW".
This input signal is ignored when no disk is installed.
5.3.4 Direction Select
This signal specifies the moving direction of the R/W head when the Step
input is activated.
Logical "LOW" level : the direction to the inner tracks of a disk.
"HIGH" level : the direction to the outer tracks of a disk.
5.3.5 Step
This is a control signal to move the R/W head, and the head starts
moving at the rising edge of the Step signal.
5.3.6 Write Data(MFM)
Each time this signal changes from "HIGH" level to "LOW" level,
the direction of the current flowing into the R/W head is reversed,
and the data bit is written on the disk.
3 ms Min.
0.15 ㎲ Min.
0.15 ~ 1.1 ㎲
Tw
Ta±0.5 % Tb±0.5 % Tc±0.5 %
Density Mode Ta (㎲)
(Typ.)
Tb (㎲)
(Typ.)
Tc (㎲)
(Typ.)
Density Transfer Rate
1.0MB 250 kbps 4 6 8
1.6MB 500 kbps 2 3 4
2.0MB 500 kbps 2 3 4
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 19
MODEL SFD-321B
5.3.7 Write Gate
"LOW" level of this signal enables the write data to be written on the disk
provided that the drive is selected, disk used is not write protected and
seek operation is completed.
When this signal changes to "HIGH" level, the read or seek operation
becomes possible.
5.3.8 Side Select
This signal selects the side of Heads.
Logical "HIGH" level : the lower side (side 0) of Heads
"LOW " level : the upper side (side 1) of Heads
5.4 Output Signals
5.4.1 Index
This is a pulse signal output to indicate the start of the track, and it
outputs at every revolution of the disk.
This output signal is activated when only the drive is in Ready state.
<Note>
(*1) The value in parenthsis is for 360 rpm (1.6MB Mode) rotation speed.
100 ㎲ Min.
650 ㎲ Min.
100 ㎲ Min.
100 ㎲ Min.
650 ㎲ Min
valid
valid valid
valid
WRITE GATE
SIDE SELECT
READ DATA
1∼8 ms
200±3 ms
(166.7±2.5 ms)(*1)
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 20
MODEL SFD-321B
5.4.2 Track 00
"LOW" level of this signal indicates the head is on Track 00 position
and stepping motor is at the specified position respectively.
5.4.3 Write Protect
When a write-protected disk is inserted, this signal becomes "LOW"
and the data on the disk is protected from mis-erasing and
the write operation is inhibited.
5.4.4 Read Data (MFM)
Read Data read out from the disk is transferred to the host system
in the same form as it was received on the Write Data line. Each flux
reversal sensed on the disk produces the only transition from "HIGH"
level to "LOW" level. For the seperation of the clock bits from the data,
the leading edge of a change from "HIGH" to "LOW" level is used.
400 ns±20 %
Ta±0.5 % Tb±0.5 % Tc±0.5 %
Density Mode
Ta (㎲)
(Typ.)
Tb (㎲)
(Typ.)
Tc (㎲)
(Typ.)
Density Transfer Rate
1.0MB 250 kbps 4 6 8
1.6MB 500 kbps 2 3 4
2.0MB 500 kbps 2 3 4
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 21
MODEL SFD-321B
5.4.5 Disk Change / Ready
By selecting proper trace plugs, this signal line (pin #34) can be used for
Ready or Disk Change line.
-. Ready
This line becomes active "LOW" when the drive is selected, a disk is
clamped and the spindle motor is up to speed.
(after counting at least two Index pulses)
Otherwise this line goes logical "HIGH" level.
-. Disk Change
This line is active "LOW" unless disk is clamped and a Step pulse is
received when the drive is selected.
0.5 ㎲ Max 0.5 ㎲ Max
inserted ejected
DRIVE SELECT
DISK IN
STEP
DISK
CHANGE
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FLOPPY DISK DRIVE SPECIFICATION
PAGE 22
MODEL SFD-321B
6. TIMING DIAGRAM
6.1 Seek Operation Timing
6.2 Read / Write Operation Timing
REVERSE FORWARD
1 ㎲
Min.
1 ㎲
Min.
1 ㎲ Min.
10 ㎲ Max.
2.8 ㎳ Max.
18 ㎳ Min. (*1)
500 ㎱ Min.
3 ㎳ Min.
DRIVE SELECT
DIRECTION
SELECT
STEP
TRACK 00
<Note>
(*1) Turn Around Time is 18 ms Min. when Direction is changed.
(*2) 750㎲ Min. (including 100 ㎲ Side Select timing)
(*3) When spindle motor speed is changed (300 rpm ↔ 360 rpm)
this value is 500 ms Min.
650 ㎲ Min.
650 ㎲ Min.
0.3 ㎳ Max.
600 ㎳ Max.
(*2)
MOTOR ON
DRIVE SELECT
READY
STEP
READ DATA
WRITE GATE
WRITE DATA
DENSITY
SELECT 100 ㎲ Min. (*3)
(*2)
100 ㎲ Min. (*3)
100 ㎲ Min (*3)
18 ms Min.
0 Min.
18 ms Min.
0 Min.
8 ㎲ Max.
(*2)
8 ㎲ Max.
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 23
MODEL SFD-321B
7. SAFETY STANDARDS
This drive is approved by the followings;
. CE
. CSA
. UL
. TUV
. MIC
. BSMI
. FCC
SAMSUNG ELECTRO-MECHANICS CO.,LTD.
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 24
MODEL SFD-321B
8. PACKAGING DESCRIPTION
8.1 Label Description
8.1.1 Serial Number Label Marking
F B T 6 S 1 A L B 00001
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩
① Product name : "F" → FDD
② Model name : "B" → SFD-321B
③ Revision name (Major)
④ Revision name (Minor)
⑤ Production division : "S" → SEMA ELECTRONICS CO.,LTD
⑥ Production site
⑦ Production line : "A" → A-Line, "B" ~ "Z"
⑧ Year of manufacturing
⑨ Month of manufacturing
⑩ Consecutive number
8.1.2 Label Description
BAR CODE
FBT6 S1ARB00001
Marking 1 2
Production site
China factory
(SEMA China)
Outside supplier
(OEM)
Year 2001 2002 2003 2004 2005 2006 2007
Marking M N P Q R S T
Month Marking Month Marking Month Marking Month Marking
1 1 4 4 7 7 10 A
2 2 5 5 8 8 11 B
3 3 6 6 9 9 12 C
Bar code
SFD-321B / DC5V 0.7V
⑩
⑨
⑧
⑦
⑥
⑤
REV. T6②
****③ MADE IN CHINA④
FBT6 S1R1100001①
① Serial number
② Revision
③ Buyer name
④ Production site
⑤ CE marking
⑥ CSA marking
⑦ UL marking
⑧ TUV marking
⑨ MIC marking (for only domestic)
⑩ BSMI marking
⑪ Label manufacturer identification
⑪
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SEMA ELECTRONICS CO.,LTD
FLOPPY DISK DRIVE SPECIFICATION
PAGE 27
MODEL SFD-321B
9. OPTION SELECTION
FDD can be modified for different functions than the standard specification.
These modifications should be implemented by the factory according to the
request of the customers.
9.1 Trace Options
By putting a chip-resistor onto a proper trace, FDD can be used for the
following different functions.
Trace Name Description
DS0
DS1
Activate Drive Select 0 line
Activate Drive Select 1 line
DC
RDY
Activate Disk Change Signal
Activate Ready Signal
OPA
OPB (*1)
For 3 Mode usage
For 1.6MB usage
<Note>
(*1) Both "OPA" and "OPB" open : 2 Mode (1MB / 2MB)
"OPB" is connected and "OPA" is open : 2 Mode (1MB / 1.6MB)
"OPA" is connected and "OPB" is open : 3 Mode (1MB / 1.6MB / 2MB)
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FLOPPY DISK DRIVE SPECIFICATION
PAGE 28
MODEL SFD-321B
9.2 Other Options (Buyer Selection)
The colors of In-Use LED, Front-Panel, the value of the termination resistors
and the shape of button can be modified by customers' request.
9.2.1 Mode
9.2.2 The Selection of Bezel Type
9.2.3 The Color of Bezel, Button
9.2.4 The Selection of LED Color
□ 2 Mode (1MB / 2MB)
□ 3 Mode (1MB / 1.6MB / 2MB)
□ With Bezel
□ Without Bezel
□ Black
□ Ivory
□ Gray
Color Number (Fill in this blank)
□ Green
□ Red
□ Amber

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