Samsung Computer Drive Sfd 321B Users Manual STANDARD_manual_24ea_packing_20060820

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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

Guan

g

don

g

Province

,

China

FDD

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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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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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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FLOPPY DISK DRIVE SPECIFICATION

PAGE 4

MODEL SFD-321B

2. GENERAL SPECIFICATIONS

2.1 Performance

ITEM

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 3ms

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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FLOPPY DISK DRIVE SPECIFICATION PAGE 5

MODEL SFD-321B

* Read/Write Compensation : 125ns is recommended

ITEM

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

AcousticNoiseat50cm

-at3msStepRate 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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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

5~100Hzfrequencyrange 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 3GMax.

Shock (11 ms

half sine wave)

Operating 5GMax.

Transportation 100 G Max.

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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.

ITEM SPECIFICATION

M.T.B.F.(Mean time between failures) 20000 power on hours (POH)

(25% duty)

M.T.T.R.(Meantimetorepair) 30 minutes Max.

Component Life 5years

Disk Life 3×106passes per track or more

Disk Insertion 3×104times or more

Error Rate

Soft Read Error

(*1) 1per10

9bits read

Hard Read Error

(*2) 1per10

12 bits read

Seek Error

(*3) 1per10

6seeks

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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.

ITEM SPECIFICATION

Required Power D.C. 5 V ±10 %

AllowableRippleVoltage 100 mVp-p (including spike noise)

Power

Consumption

Operating Mode

Average Current Average Power

Typ. Typ.

Stand - by 2mA 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)

2mA

18 ms Max.

0.3 A

Stand-by

(*2)

Spindle motor ON Read /

Write

Seek

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FLOPPY DISK DRIVE SPECIFICATION

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MODEL SFD-321B

2.5 Physical Specifications

ITEM 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

SEMA ELECTRONICS CO.,LTD

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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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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

24 ~ 34

13 ~ 33

PCB

Top View

FRONT

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FLOPPY DISK DRIVE SPECIFICATION

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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

4321

Rear View

Top View

PCB

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FLOPPY DISK DRIVE SPECIFICATION

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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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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 Ωresistor 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

2Mode

(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.

3Mode

(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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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

movingattherisingedgeoftheStepsignal.

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.

3msMin.

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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FLOPPY DISK DRIVE SPECIFICATION

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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∼8ms

200±3ms

(166.7±2.5 ms)(*1)

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FLOPPY DISK DRIVE SPECIFICATION

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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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FLOPPY DISK DRIVE SPECIFICATION

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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

clampedandthespindlemotorisuptospeed.

(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

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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.

0Min.

18 ms Min.

0Min. 8㎲Max.

(*2)

8㎲Max.

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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.

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

FBT6 S1ALB00001

①②③④ ⑤⑥⑦⑧⑨⑩

①Product name : "F" →FDD

②Model name : "B" →SFD-321B

③Revision name (Major)

④Revision name (Minor)

⑤Production division : "S" →SEMA ELECTRONICS CO.,LTD

⑥Production site

⑦Production line : "A" →A-Line, "B" ~ "Z"

⑧Year of manufacturing

⑨Month of manufacturing

⑩Consecutive 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

⑩⑨⑧⑦⑥⑤

REV. T6②

****③MADE IN CHINA④

FBT6 S1R1100001①

①Serial number

②Revision

③Buyer name

④Production site

⑤CE marking

⑥CSA marking

⑦UL marking

⑧TUV marking

⑨MIC marking (for only domestic)

⑩BSMI marking

⑪Label manufacturer identification

⑪

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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

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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

□2Mode(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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MODEL SFD-321B

11. GENERAL COMMENT

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