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Содержание FDI036A

Страница 1: ...FDI036A 3 5 FLOPPY DISK DRIVE PRODUCT DESCRIPTION 806 520236 0 REV O NEC Corporation PreJ I mIn a j ...

Страница 2: ...y design manufacturing reproduction use and sales rights thereto and to any article disclosed therein except to the extent rights are expressly granted to others The foregoing does not apply to vendor proprietary parts Specifications remain subject to change to allow the introduction of design improvements Copyright 1985 NEC Corporation Printed in Japan i ...

Страница 3: ...Edition Description 1 Prepared in August 1985 ii ...

Страница 4: ...ifications 7 8 2 5 Disk Structure 9 3 INTERFACE 11 Physical Specifications 3 1 3 2 General Description 11 13 3 2 1 3 2 2 Signal Types and Pin Configuration Power Connector and Pin Configuration 15 16 Electrical Specifications 3 2 3 3 3 3 3 1 3 3 2 Connector Type Signal Level Driver Receiver 17 18 18 18 3 4 Input Signals 20 3 4 1 DRIVE SELECT a to 3 DSO to 3 iii 20 ...

Страница 5: ...e Data Timing INDEX IDX READ DATA RDT TRACK 00 TKO READY RDY WRITE GATE WGT SIDE SELECT SSL Step and Track 00 Input Power Specifications STEP STP Read Timing DIRECTION SELECT DIR Ou tpu t Signals Powe r In te rface 3 4 2 3 4 3 3 4 4 3 4 5 3 4 6 3 4 7 3 5 3 5 1 3 5 2 3 5 3 3 5 4 3 5 5 3 6 3 6 1 3 6 2 3 6 3 3 6 4 3 6 5 3 6 6 3 6 7 3 7 3 7 1 4 OPERATING PROCEDURES 31 4 1 Setting a Floppy Disk 31 4 2 ...

Страница 6: ...4 3 Display Lamp 31 5 EXTERNAL SHAPE AND INSTALLATION 32 5 1 External Shape and Fitting Hole Positions 32 5 2 Installation 33 5 3 Recommended Air Flow 34 6 PACKING AND TRANSPORTATION v 35 ...

Страница 7: ...of conventional 5 l 4 w minifloppy disk drives and weights only approximately 560 g yet has a comparable storage capacity The previous FD 1035 series is the short model with short depth 130 mm The FD 1036 series is the slim model with thin thickness 30 mm The drive uses a direct driven spindle with a brushless DC motor and by due the low power design it consumes only 2 1 watts of power Typ The low...

Страница 8: ...59 BPI 5 Tracks 160 6 Average rotational speed 300 rpm 7 Seek time 3 ms Track to track 8 Seek settling time 15 ms 9 Track density 135 L TPI 10 Start time NOTE 2 800 ms 11 Standard Width 30 1 2 mm in external dimen Height 101 6 4 mm in sions NOTE 3 Depth 146 MAX 5 75 mm in 12 Weight 56 gr 13 Operating Temperat ure 5 45 C environ ment Relative 20 80 iRH condi h D1idity tions Maxim1 DIl 29 0 C wet bu...

Страница 9: ...years Design life 9 Times bit Soft errors 10 Not including 2 or less retry attempts l Z Hard errors 10 Times bit _6 Seek error 10 Times seek ratio 6 18 Disk life 3 0 x 10 Pass count track 19 Disk Double sided 3 5 diskette specified by NEC 20 Drive Operating Non operating Transporting Unit environment Storage Packing Temperature 4 tV 46 20 50 40 60 C 39 115 4 122 40 140 OF Relative 20 80 10 90 5 95...

Страница 10: ...not nc1uding that of the front bezel 4 If the disk is not inse rted 0 r the MOTOR ON signal is invalid 5 When FDD is in READY status I 6 Under standard use conditions 1 Drive service time POH 2 Actual head load time R W time 3 Disk insertion ejection 4 Motor ON OFF 5 Average use time per disk 8 h Lday 0 5 h day 25 times day 300 times day 2 h day 4 disks day drive 7 Excitation in three directions o...

Страница 11: ... the DC spindle motor The disk is set to the spindle with a magnet and is driven by a driving pin 3 Head carriage assembly Contains a pair of magnetic heads facing across the disk The R W gap of the head on side one is dislocated 8 tracks inner than that of the head on side zero 4 Step motor Move the carriage Assy by using the steel belt for head position 5 ...

Страница 12: ...the open close of the write prohibition hole 8 Eject mechanism Used fo manual insertion and removal of a disk and for automatic shutter control 9 P W B Mounts the electric circuits that controls positioning of magnetic head read write operations etc 10 Display lamp This is a lamp that displays a FDD status 11 Front panel Dress panel installed on the Drive front 6 ...

Страница 13: ...ontroller The magnetic head moves to a target track according to the STEP pluse and DIRECTION SELECT signals The desired magnetic head is selected by the SIDE SELECT signal from the controller Now FDD is ready for read write operations For a write operation the WRITE DATA signal which is the serial data sent from the controller converted into magnetized pattern and is recorded on the disk For a re...

Страница 14: ...er of total tracks 160 per disk 6 Disk cartridge size 90 x 94 mm 7 Operating Temperat ure 10 60 C 50 140 F environment conditions Relative 8 tV 80 RH hunidity Wet bulb 29 C MaximlDll 84 F temperature 1 Temperat ure 20 o C h MaximlDll 36 F h gradient External 4000 A m 50 or less oersted Magnetic field Note Leave the disk at least 30 minutes in the drive operating environment before use 8 ...

Страница 15: ...ethylene terephthalate base coated with magnetic layers The liner consists of unwoven cloth and protects the disk surfaces from scratch or dust The hard jacket is made of ABS resin The disk has a metal hub wihch is used to secure itself to th spindle The hard jacket has a write protect hole and automatic shutter The disk construction is shown in Figure 2 1 9 ...

Страница 16: ...Figure 2 1 shows the disk structure o I I 90 I Fig 2 1 Disk Structure 10 ...

Страница 17: ...ends on dividual system and controller For daisy chain connection each controller can control up to 4 FDDIs Signal line termination resistors are provided on each FDD The basic FDD connection to the controller is shown in Figure 3 i a Parallel connection Signal cable u 1 R R R R FDD FDD FDD FDD Controller 0 il 2 3 I Power cable R Terminating resistor 2K 0 Signal cable maximum length 1 m 11 ...

Страница 18: ... Daisy Chain connection Signal cable 0 R R R R FDD FDD FDD FDD Controller 0 1 2 3 I I Power cable R Terminating resistor 2K n Signal cable total length maximum length 1 m Fig 3 1 Basic Connection Modes 12 ...

Страница 19: ...YSICAL SPECIFICATIONS The FDD is connected to its controller through a signal connector and a power connector A faston terminal is provided for frame ground The connector locations are shown in Figure 3 2 13 ...

Страница 20: ...Signal connector lu Si qnal connector receptacle Power connector plug Fig 3 2 Connector Locations 14 ...

Страница 21: ...gnal 6 5 GND INDEX Output signal 8 7 GND DRIVE SELECT 0 Input signal 10 9 GND DRIVE SELECT 1 Input signal 12 11 GND DRIVE SELECT 2 Input signal 14 13 GND MOTOR ON 1 MOTOR ON Input signal 16 15 GND DIRECTION SELECT Input signal 18 17 GND STEP Input signal 20 19 GND WRI lE DATA Input signal 22 21 GND WRI m GATE Input signal 24 23 GND TRACK 00 Output signal 26 25 GND WRITE PROTECT Output signal 28 27...

Страница 22: ... 10 C O l F POWER CONNECTOR AND PIN CONFIGURATION The following shows the power connector pin configuration Printed circuit board 1 EB 2 EB 3 EB 4 Fig 3 3 Power Connector in Configuration Table 3 1 Power Connector Pin Assignments Pin number Supply voltage 1 5 V DC 2 GND 3 GND 4 12 V DC 16 ...

Страница 23: ... tacle Housinq 171822 4 Pins 170262 1 by Japan AMP Co Ltd Power connector pluq Siqnal connector lu Socket PS 34SEN D4Pl 1C N closed end type PS 34SEN D4Pl 1D N daisy chain type both by Japan Aeronotic Electronics Industry Co Ltd or equivalent NOTE 1 Cable 3365 34 by Sumitomo 3M Co Ltd or equivalent Signal connector receptacle Fig 3 4 Connector Locations and Recommended Models 17 ...

Страница 24: ...Oft LOW level FALSE Logical Wlft HIGH level DRIVER RECEIVER 0 to 0 4 V 2 5 to 5 25 V The driver which outputs signals from FDD to the controller is an open collector output circuit capable of obtaining sink current of maximum 40 mA l at LOW level The receiver which receives signals from the controller to FDD is a Schmitt trigger gate terminating with 2k Ohm 18 ...

Страница 25: ... Controller 7438 or equivalent Cable length 1 0 m Max 5V FDD Driver LS14 or TiT i7T equivalent rf1 h TiT m 5V 7438 or MIN equivalent Receiver Driver Fig 3 5 Driver Receiver Circuit Example 19 ...

Страница 26: ...e the input output lines FDD is specified by shorting one of the DX selection plugs a to 3 on the PWB STEP STP Pulse signal which moves the magnetic head in the direction specified by the di ection select signal The head begins moving at the rising from LOW to HIGH level of this signal The magnetic head moves over as many cylinders as the number of input pulses Figure 3 6 shows the pulse timing co...

Страница 27: ...outer tracks and the LOW level indicates toward the inner tracks This signal must be switched definitely o all S before the trailing edge positive going of the STEP signal SIDE SELECT SSL Signal selecting one of the heads used for write or read The HIGH level selects the magnetic head on the side 0 of the disk and the LOW level selects This signal must be switched 100 II s befor start of the read ...

Страница 28: ... signal or start positioning for 1 ms after this ignal has gone to HIGH level WRITE DATA WDT Pulse signal that supplies data to be written to the disk Every time the signal changes from HIGH to LOW level the write current in the agnetic head changes direction which changes the direction of magnetization on th disk Figure 3 7 shows the WRITE DATA specification 22 ...

Страница 29: ...cification MOTOR ON 0 MON The spindle motor rotates by making this signal LOW when the disk is inserted The following signals on the MON plug can be used to rotate the spindle motor 1 Plug 1 Interface pin 14 DRIVE SELECT 2 2 Plug 2 Interface pin 16 MOTOR ON 0 3 Plug 3 In te rface pin 2 MOTOR ON 1 NOTE mark indicates setting position when delivery 23 ...

Страница 30: ...pulse specification The reading edge of the pulse is used as a reference INDEX lDX u u t 1 Tl 1 V8m s T2 200 3ms 3 5 2 Fig 3 8 INDEX Pulse Specification TRACK 00 TKO When at LOW level this signal indicates that the heads are on track 00 This signal is generated by the signal from the track 00 sensor and the excitation phase of the step motor 24 ...

Страница 31: ...isfied ti DC power is supplied 5V l2V ii A disk is mounted iii The rotational speed of the floppy disk has reached 90t of the specification NOTE When the spindle motor is rotating by the MOTOR ON signal READ DATA RDT Data read from a disk which is shaped into a pulse string Figure 3 9 shows the READ DATA signal obtained when normally recorded data is read 25 ...

Страница 32: ...1 5T3 2T3 T3 4llS Typ T4 IllS 500ns Fig 3 9 READ DATA Signal Specification 3 5 5 WRITE PROTECT PRT If a disk with its WRITE PROTECT hole uncovered is inserted into the drive the PRT line goes low which places the FDD in the WRITE PROTECT state 26 ...

Страница 33: ... Step STP Track 00 TKO Access timing u u II 2 5 ms max Write gate WGT Step STP Direction select DIR 1 ms min 0 8 1 1s 2 ms L L 3 ms 18 ms min NOTE 0 8 1 1s i min NOTE An interval of at least 18 IDS is required between step pulses when the direction changes 27 ...

Страница 34: ...rite Timing 11 ms min I U JK 100 1 1S min 18 IDS min Step STP Side select SSL write gate WGT 3 6 4 Read Timing Step STP 18 ms min I 100 1 1S min Side select SSL 1 ms min Write gate WGT Valid read data Valid 28 ...

Страница 35: ...7 DRIVE SELECT and Output Signal Timing The drive control and status signals are become valid 500 ns after that the DRIVE SELECT line is active Autochucking Timing Power supp 5 V 12 V Disk in x Spindle Index l Spindle Ready Status Chucking Completion X is internal signal of the FDD 29 ...

Страница 36: ... 90 IDA 200 mA read write to t Average when Less than 0 1 M 60 mA standby Ripple voltage NOTE 2 200mVp p or less 100mVp p or less NOTE 1 This is FDD average comsuming current 2 This includes the spike voltage 3 Data is protected in spite of DC power supply ON OFF when FDD is not in Write operation 4 If power supply is charged after moving the carriage to the outer or inner side for 1 track the car...

Страница 37: ... Disk 1 Insert the diskette slowly into the slot until the Eject button pops out 4 2 Removing the Floppy disk 1 Make sure the write read operation of FDD has finished 2 To eject the diskette from the drive just press the Eject button 4 3 Display Lamp The Display lamp indicates the FDD status It comes on while the FDD is selected 31 ...

Страница 38: ...0 I t l 60 5 S 6 o s 32 tlt 21 to slS 146 0 s 4 O s 21 9 O s 6 3 0 5 1 70 a S 31 0 S 4 Rl 2 r r 1 0 C l I Q r I n 0 X 1 1 i I 0 0 0 Q r I 0 II I LJ 1 J t II 8 4t4 40UNC I 70 D S 31 o s 8 6 o s r 0 I NO l E 1 60 O s 2l 0 s 0 M _4 Unit 1IIlIl o l NOTE 1 The metric screw type is also available Fig 5 1 External Shape and Fitting Hole Positions 32 ...

Страница 39: ...talled in the following manners a Vertical b Vertical c Horizontal o a a b c Consider the location of FDD in the system so that it may be protected against the noise from CRT power supply etc especially when installing it inside CRT 33 ...

Страница 40: ...ecommended Air Flow 1 Installing one FDD Ventilator c L 3 1 nO I U D 2 Installing two FDDs _ I _ o Ventilator NOTE Appropriate cooling is required if the ambient temperature around FDD rises considerably 34 ...

Страница 41: ...ATION 1 For external packing either use the packing material used in the carrying in of FDD of make sure no direct shock will be transmitted to FDD 2 Make sure that FDD will sustain no excessive shock during transportation 35 ...

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