Epson SMD-100 series Specification

SMD 100 Normal Power 3 1/2 " EPSON Technologie,die Zeichen setzt. • Japanisches QuaUtätsprodukt - - . ' . 3V2-ZoH-Floppy-Disk-Laufwerk ~ , I • SHUGART-Bus kompatibel über Jeden 5!14 "-ControHer zu , . betreiben • Single-Side 40 Tracks ii!'!I Mit 2 Laufwerken und der Special­ ControHer-Karte, Best.-Nr. 0600219 . . . ... . .. . . .... 248,- DM läßt sich preiswert und einfach eine Doppel-Floppy-Station für Apple realisieren. EPSON-Floppy­ Laufwerk "SMD-110": Preisvorteil: 60 % unter dem derzeitigen Markt­ preis. Druckguß­ Chassis; durch­ kontaktierte Epoxy­ Leiterplatte, schwarze Front mit LED. Betrieb an Apple mit Special­ Controller-Karte (Best.-Nr. 0600219). Einbaulage unabhängig. LxB xH : 147,5 x 105 x 42 mm. Best.-Nr. 9910493 . . . . . . . . . . . . . .. . ... 159,- DM ab 2 Stück ............. . .. je 149,- DM Manual (24 Seiten, eng!.) Best.-Nr. 9910509 ........... .... .. .. . . 3,95 DM $Wlflj&U CelectroniC) Manual 9910509 3,95 DM Versand und Zentrale: 3300 Braunschweig Postf. 5320 Telefon: (0531) 87620 Telex 952547

9 4-1-1 Electrical specificationsof input signals .. 9 4-1-2 Function of' input signals 9 ( 1 ) Drive select 0 J ·...... 9 (2) Hotor on ..... .. 10 (J) Direction . . ... ·... .. 10 ( ~ ) Step ...... ·...... ·.... .... 10 (5) H'rite gate .... . . ... . ... · ...... 10 ~ (6 ) Write data . . .... . .... . ...... .......... 10 (7 ) Side select ·... . . . . . ........... 11 ( 8 ) In use .... . . . ·......... ............ 11 4-1-4 Option functions 11 4-1-5 Electrical specifications of the output signals 12 4-1-6 Function of the output signals · 12 ... ( 1 ) Ready 12 (2 ) Track 00 13 ( J ) Index ·... 13 (4) Read data 13 (5 ) \lri te enable 13 4-1-7 Timing ................ 14 Track seek timing 14 Head start timing ........................ 14 Read data timing ......................... 15 2

\-Iri te start timing. 15 (5) Write data timing ....... 15 (6) Control data timing ................. 16 4-2 Power supply inter~ace 17 4-2-1 Power supply specifications 17 4-2-2 Connectors 17 Power supply line ~. 1 7 Signal lines 18 4-2-) State of' wait 19 4-2-4 Connectors .. 19 Installation 19 4-3 5, 3.5 Flexible Disks 20 5-1 Appearance 20 5-2 Recomrnendable medium. 20 6. Outline Dimension Drawing .•............•.....•.....•• 21 7. Notes on Use oi' Drive 24 7-1 Power su?ply 24 7-2 Interface 24 "7-) Error rate 25 7-4 Caution 25 7-5 Installation of drive 25 7-6 Beat generation 25 8. Format ••••••••••••••• 0 •••••••••••••••••••••••••••••• 26 8-1 IBM Track Format . . . . . . . ... . ... . . . . ....... . .. . ... . 26 8-2 ISO Disk Format ......... . ... . ....... . . . . . ..... . . 26 3

disk drives for 3.5" flexible dlsks. 2. General SHD-l00 series (normal power eonsumption) drives are flexible disk drives designed to be used as external memories for personal computers, word processors, ete. The features of the SHD-100 series drives are described be 10Yl • (,) Low power consumption: SMD-l00 series drives operate on only 2. lW (wait) and 5.2W (read/write) power. (2) Memory medium used i8 3.5 11 flexible di.sk encased in a hard cartridge er equivalent. (3) The disks used have a storage capacity of 500K bytes per aide (equiva­ lent to a eonventional single-sided, double-density 5.25" floppy di sk). ( 4 ) Hi gh t r ack densi ty (1 35 TPI) (S tvt 0 - 1 4 0 . 1 3 0 ) (5) Use of oe brushless spindle drives assures long, trouble-free service life. (6) The head positioning meehanism employs a step motor and a steel band enabling fast (3msee) access between tracks. (S M 0 - 1 4 0 , 1 3 0 ) (7) The interface employed is fully compatible with conventional disk qrives, enabling easy replacement. (8) The small aize and light weight (800g) of the SMD-l00 series drives make thßm ideally suited to a wide variety of applications. 4

Model Unformatted (Kbytes) FM Memory HFM 1 Capacity I Formatted (Kbytes) ~'H 1 I (16 sectors/tracksl I HFM I Recording density (BPI) I FM I HFHJ Data transfer speed (Kbi1 /sec) I FM I I MFM I Track density (TPI) Average rotation wait time (rnsec) Average Settliinq time He ad load ti.me Total Number of tracks 160 80 80 40 Inner track radius (mm) Side 0 24.6875 24. 8 '7 5 side 1 23.1875{ 23.375 Outer track radius (mm) Side 0 39.50 39.50 Side 1 38.00 38.00 Recording methods FM/MFM R/W head TUnnel erase type No. of heads 2 2 Head positioning method Step motor Type Direct drive Spindle motor Start-up time (sec) 1 .0 1 .0 Rotation speed (rpm) 300 300 5

Index detector I Noncontact detection method I Detector I~Tra_c_k O_O d_e_t_e_c_t_o_r ~I~N_o_n c_o_n t_a_c t d e_t_e c_t_i o_n me_t_h o_d ~1 __ __ __ ____________ __ __ ______ __ __ ____ __ ____ I Write enable detector I Contact detection method I I Cartridge set detector I Contact detection method I Environmental conditions I Temperature I 5 to 45°C I (Operating) 1Humidity I 20 to 80% RH (non-condensinq) I I Hax. we t bUl~ 29°C I I tempera ture I I I Vibration 15 to 60Hz, O.6G max. I Environmental conditions Te m pera ture I -2 0 t 0 65°C (- 4 0 t 0 6 5 ·C t rans po r t ) I (s torage and transport) Hurnidity I 95% RH max. (non-condensinq) I Vibration I 5 to 60Hz, 3G max. 1 Shock I SOG max. Power supply I +12V (+5~) Wait I 6 0 mA (TYP) I R/W 1 3 0 0 mA CTYP ) I Motor start 85 0 mA ( max • ) +5V (+5%) wait 280 mA (TYP) R/W 320 mA (TYP) 420'mA (max.) Power consumption Wai t.. 2. 1w (TYP) I R/W 5. 2 H (TYP) I Outline dimensions " Width 101.6mm Depth 147.5mw Height 40mm Weight 800g L I Designed orientations Four arienta tions •.(See page 19 ) I I Ins talla tion method I I l I Applicable disks I I Screw holds on the side and lower panels of the disk drive are used. (See page 22 I Outline Dimension Drawing. ) 3.5 11 flexible disk. (For details, see page 20.) 6

I Re liabi1i ty I MTBF 10, 000 POH I I~__________~______--------~ I f MTTR 0.5h I I~__________~______________~ I I Designed service life 5 years I I~________~______________~ I I Sof tware error ra te Less than 1 bi t per 109 I J~__________~______________~ I I Hardware error rate Less than 1 bit per 10'2 I I~__________~______________~ I I Seek error rate Less than 1 seek per 106 opera- I I tions I I Disk service life 3 x 106 passes/track I I Connector Power supp1y AMP 171822-4 or equivalent Signals JAE PS-34SEo-04P1-1C/Oor equiva1ent Front panel material ABS resin (Black) Safety standard Conforms to UL standard. 7

4.1 Configuration of interface signals Tha SMD-l00 series (low power consumption) flexible disk drives are designed so that a maximum of 4 drives can be connected in a daisy chain configuration. All signal input levels are ~TL compatible. The power supply and interface require +SV and +12 V power. 4.1.1 Electrical specifications of input signals ... Low" :; TRO E VIN: OV to +O.4V I IN: 5mA ('l''iP) "High" FALSE VIN: +2.5V to +5.25V IIN: OmA (open) +sv 1 ~ lk{l D~~----------~I~[~ 1438 5. 6 KO C-MOa The terminating resistance array is set at the correct direction (mark is inside) in the single line socket on the main unit: For the daisy chain connection; resistance array can be only installed into one of the (four) drives. Tbe disk drive with the resistance array instal1ed must be charged with current in order to operate any of the drives. 4.1.2 Function of input signals (1) Drive select 0" 3 (080 ,... OS)} A ll\axilnum of four S1-10-100 sel."'ies (low power consumption) disk drives can be connected in a daisy chain configuration. Selection of the drive numbers is performed by SSl of the DIe connector on the main PCB. When this switch is operated, only the signals from the selected drives will be input. At the position MX, drive is selected no matter ~hat state of drive select sigIlai. 8

The spindle drive is operated when this signal is low. However, read and write operations are only performed when the read (ROY) signal is low. (If the dlsk cartridqe is not set in the drive, the spindle drive will not operate.) The RDY signal goe5 low within one second after the MON signal 15 input when a disk cartridge has been set. (3) Direction (DRTN) This signal determines the direction of the movement of the step motor which controls the movement of the read/write heads. When this signal i9 low, the read/write head will move toward the . center of the disk and when it 1s high, toward the edge of the dlsk. (4) Step (STP) The low pulse of this s~gnal causes the ·s t e p motor to move in the direction indicated by the DRTN signal. The response step cycle (Ts min.) 15 3ms/track for models 140/130 and 6ms/track for models 120/110. When the write gate signal 1s low, step 1s internally inhibited. Wben the s'eek direction i5 reversed, the reverse step pulse must be sent after the last pulse (Ts min + 6ettlinq :tlwe). A: Jms(mil) B ""6ms(mn) I m.dmn\ 1 3 0 ) A. B (SMD-120, 1 1 0 ) (5) Wri te ga te fWTG) This signal selects between read and write data. When th1s signal 1s low, write data 1s enabled and when high, read data 1s enabled. Write operations to a cartridge to which a write enable cover has not be~o affixed are internally inhibited by the disk drive. After the WTO signal goes high, there is a 1.3ms eraae timing. Fo'r this reason the see~ or read operation will not begin immediately. (6) Write data (WTO) This signal transanits the write data that is beiog written to the disk. The fall of th1s signal from high to low causes the ~rite current flowing through the read/write head to reverse polarity. '!his signa"l is operable only when the write gate signal is low. 9

2. IlIs( max) FM recordin9 (7) Side select (SSL) This signal selects whether the upper or lower read/write head will be used. (upper head) 11 HIGH" 1: Side 0 (lower head) NOTE; This signal is used only ~ith models SMD-l'O/SMD-120. (8) In use (IUL) This signal is used to turn the LED on the front panel of the disk drive on and of f. When this signal 1s low, the LED turns on and when i t i5 high, the LED turns of f • This LED is controlled by the drive select signal as the factory-set condi tion. "4.1.4 Option functians By operating the switches on the PeB of the SMD-l00 series disk.drive it is possible to select the signal that will contral the illumination of the LED on the front panel of the drive. 10

The tED 1s controlled by the in use signal (pin No. J2-4). (2) When pin No. 2 (10) is shorted The LED i5 controlled by the drive select signal. (l) When pin No. 3 are sharted. The LED illuminates only when the in use signal,the drive select si,nal and motor on signal are all active. (10 1s shorted as the factory-set condition.) 4.1.5 Electrical specifications of the output signals SN7438(TI) or equivalent 1s used as the output drive for SHD-l00 series disk drives. '(7 "J ':" SMO-l00 leri8, dl.k drIve -;;: SN " 414 or .qulvalenl HOlt Iv,tem dlsk drive "Low" ;:; TRUE "High" ::; FALSE VIN~ I IN: VIN: I IN: +0 to +O.4V 4 Qn1\ (M A X) +2.5 to +5.25V OmA (open) 4.1.6 ( 1) Funct10n of the output signals. Ready (RDY) This signal goes low to indicate correctly set in the drive and detector is provided to detect control the ready signal. that the disk cartridge has 15 rotating normally. In the the presence of the disk cart been SMD-l00, a ridge and to 11

This signal goe.s low when the read/wri te head is in the outermost posi­ tion on the disk. (3) Index (IDX) One low pulse of thls signal is genera ted fQr each rotation of the disk. The trailing edge of this pulse shows the beginning of the track. ZOOms (nom) 0.5,....,Gms (4) Read data (ROD) ROD outputs the bit stream of read data fram the read circuit. This signal i3 normally high and goes low in response to a change in the polarity of tqe data on the disk. 4.us (0001) Bjls(nom) --t---.....r-1.us ± O. 35.us (5) Write enable (WE) This signal goes low and i3 sent to the host computer when a disk cartridge with a wri~e enable notch is set in the disk drive. 12

(1) Track seek timinq WRITE GATE DRIVE SELECT OIRECTlON ... 1 1- 'Jls (min) l.usernn) Ips( mh) • 1 I .. l.9PlI(mll1 --.J--t--' ms( mtl) A : 3 m I (ill I D) B : 6ms(mln) IJls (mn) , JA:S (m ,l u) A 18m'(mlll) ......- ......--41 I "'. (m I Il) , ß ~: 21m I (Pl 1 Il) STEP A (SMD-140. 1 3 0 ) B (SMD-l 20, 1 1 0 ) (2) Read start timing DRIVE SELECTi STEP ~'Jls(min) WRITE GATE l}Js( mill) VALID AEAD DATA 1j.1S (m in) --I~ A 18m. (1ll1 A) B 21 I:q, (m 1 n) 1', ami (m l A) I}J S ( IIIr1 ) A (SMD-140, 3 0 ) B (SMD-l 20, o ) 13

For FM .f}As(nom) ...--~ ß,us(nom) l,us±O.35}AS For MFM 4,us(nom) r---......-t 6}As(nom) -+-~I,us±O.JS,us 8,us(nom) (4) Write start timing DRIVE SELf.CT STEP : 1 8 ms (m 'I) B : 2 1 inS CD, I ) WAlTE GATE _ ~--ro_ A l}Js (mln) WAlTE OATA (5) write data timing For FM _of-........- 8}lS(max) I}lS (roo) A: B : 8}1s:t 40n5 tSMD-l 4 O. 1 3 0 ) (SMD-l 2 O. 1 0 ) For MFM 6J,ls ±JOns O.25,us(mw-.) 4J,lS ±20ns .---~ --+--+-0 Z.I}l$( mal) 8J,lS ±.eOns 14

When the disk cartridge has been set and the initial track position 1s 00. -11 POWEA ON MOTOR ON DRIVE SELECT READY VALID TRACK 00 VALID INDEX DIAECTION STEP WRITE GATE WRITE OATA SIDE SELECT 1\ \---------­ t Il'o(m••) ., .0500 (max) , ~ ) 200ms(nom) I c lsec(max) I ~I~s(min)~ -+---~I\l ~r---r----i-I­ I • i2' n V 11'(m ) A: 2ms(max) 11'.1.,,",,\ ~ ~ 8: 5ms(max) I . ~ t;:: ::::y '-" s( m1n) "' J Bj4s(mu) l~s(mil) U1;L 1. ~ m. (m l a) IOO}J$(mln) • I ~_ ---~ SMD·140/120 on1v )1­ 11 I i ~." (mi !!Ul (SMD - l 4 O. 3 0 ) Ijls(mln) (SMD-l 2 O. 1 1 0 ) VALIO READ DATA A B 15

4.2.1 Power supply specifications (main PCB connector Jl) Voltage Ripple voltage +12V±5~ 250 mV p-p max. 100 mV p-p max. + 5V±57. NOTE: Power supply voltage is that at power supply connector Jl of the main PCB. 4.2.2 Connectors SMO-l00 series (normal power conswnption) disk drives are connected the host ~ystem using two different connectors. Power is supplied by apower line connected to connectors Pl and Jl. Signal communication is performed by connectors Pl and J2. SMD·100 5erles (normal power Host sYiicem comumption) di5k drive + 12\1 "nl'I

consumplion' disk drive' H

mode(state of wai t) by Moter-ON si gnal (J2). 4.2. 4 Connectors For connectors, we recommend the following: Power supply connector Pl. RECEPTACLE AMP 171822-4 CONTACT PIH AHP 170262-1 Signal connector P2 PS-34SEO-D4 Pl-1C PS-34SEO-D4PI-ID (Closed ti pe) (Oaisy ti pe) 4.3 InstaUa tion Horizontal installation Button-side Button.:.side (the peB eide must be up) down installation up installation lllclinod Inatallatlon (0""30°) 18

t-" '\ ., - .. ..-----0 .. ~' .... ~ \ \ , I \ I \ , , , I .1 :, 94(3.10) \ I \ I \ ,, ," I , , " ;; 0 .....................-._--.. / I 1 90(3.54) Top vlew Side l- Vlew 5·2 Rec·om·mend·a·ble med um . . 5 . 2 • 1 S 0 N Y - - - - - 0 M-0 4 4 4 0 (ci 0 U b 1 e - s d e d) OM-D3440 (single-s d e d) 19 1] 0/'; -..... "",10 , ., '" " .... _----_... / l ( \ Met.a) hub ~ \ \ Wr 1 t D \ ,, onablo ... h 0 , 0 ...'.... Bottom vlew

- If fFill~~I-~lf 1"'------3§T ~ ~ i [ 1 I-------.--l@ I I / -4-.---+1­ -E9- er--'­ I i -$­ ) [ \ ­ -1---------:- 1- - - ­ lOS .~· o.Z 1 (4. / 3" ) [l '""' N~ 20 ...:~ ""0 ~__----____--____________________L_Jv r---------------~-------------- 2-N~-3Z/JNC d1,; Z - t'D DE;rn;..6 I I

7-1 Powor supply 7-1-1 Two power sources of' 12V and SV are required. 'fhe sequence, however, is not specified. 7-1-2 The rise timo of power supply affects the power on or reset operation of the internal circuit. Tharafore, tha 90% rise time of' thc SV power souree must ba 100015 or less. The diskette is protected at power on and power of'f'. but the write gate signal should not be allowed to beeome active. 7-1-3 When the motor on signal becomas semi-aetive, the standby mode is switched on and the operation of' the R/W circuit is stopped. 7-1-4 With a nonnal type, the power supply capaeity "bocomes maximum at the spindie motor start with 12V system and at the maximum write action with the SV system. 7-2 Interf'ace 7-2-1 The signal system is interchangeable with the conventional 5.25 11 system. 'rhe canne c tor. hO\-Jever. i 5 in compl iance in des i gn l.J i t h S ONY I 5 J. 5" d r i v e • 7-2-2 Daisy chain Up to .tour daisy chain connection is possible. The terminating resistancc array is set :for all the drivos at the shipment .from tho factary. Hemove all the arrays on tho samo cablo except f'ar the one on tho end drive. Seleetion for each drivo, which is dane by a short plug. should be mado caref'ully without repetition. 22

The lighting condition of the IN USE LED can be changed by means of a short plug. Use it in a desired setting position. 7-3 Error ratt; The error rateof the specifications is the value with the :fa u 1 t 1 e s s dis lee t t e . Well chosen diskettes must be subjected to the error rate test. 7-4 Cauti.on Tha drive design has taken into consideration the external noise oi' CHT, etc. Bowever, do not use it too close to the CRT \~ithout perfect shielding; otherwise, the Read/ Write capability of' the drive will be doteriorated. 7-5 Installation of' drive 7-5-1 Install the drive securely, usine the four screw holes (M3, PO.5, 6 DEEP) on the drive side or the four screw holes (M3, ~O.5. 6 DEEP) on the drive bottom. 7-5-2 Sincc the tolüranc e of the intervals of the instal­ lation screw holes i5 ~O.2mm, ample care must bo exercised in ensurine the positional accuracy and bore accuracy. 7-6 Heat generation Relative positions must be designed with such care that th~ ambient temperature of the drive hecomes the operating temperature of the specifications. The upper limit tem­ perature must be strictly observed particularly about the diskette. 23

8-1 IBM Track Forma t ~... Oetce ted n rL Last Sector Sector 01 Sector 02­ 1--10 F;eld 'I -1 1­ Oata Field -i ) CH' IC~1l C~p SyoC Gap S,oc AMI 10 CRC CIP SIOC AM2 oala CRC Gap Syoc IC;P 1 4 0 I 2 1 lode. 10 Uall /1-&1 Hark Addrt,>s or Mark Oeleled Oah Har~ 128 27 44 16 Byte r-­ (Dccimal) 40 6 I 26 6 1 4 2 11 b 1 2~b "2 '12 73 9 Single r-- Density 512 SB 37 5 f- Oata FW ~omaI, Ff 00 FC' FF 00 fC 'l '1 FF 00 or (Oala, ' J FF Fr FH' 256 54 152 16 Byte I­ 80 12 J 1 50 12 J I 4 2 22 12 3 I ' )12 2 84 182 9 Double (Decimal) r-- Densrty 1024 116 94 5 Data fß 4E 00 C2' FC 'IE 00 AI' FE '2 ,) 4E 00 AI or (Oal.) , ) 4E 4E [H~rm.,,) fB • ThlS data byte rncludes mlsslng clock. • -2 10 "eid .) CRC chech. byte ) rack 8-2 ISO Disk Format Index ~L--_-------------------------------41r----f1- 1------------­ Sector 1 Sector 2­ t---ID Freld -­ t- Oala Field - r--­._­ -~ill~ -:~ - - - ~p 31 Gal) 4 ,11' enc 0.\"' " elle Gap 1I GalJ I Sy,',c I\d(IIUS~ C 11 R N IJ2" Gao 2 SYIlC; tA..,~ Data iIT2 J S),ne Gao "4 -----I-~~ ' - - -6-f--.-­ -4~ r-::-' l Srngle 19y1riOt.:lIllil) 16 1 2 1I (, I 2 6 11 Oensity ~...-c_ FF 00 Fe; ---;-r-I-t n 00 B'~ I" Oala '\ Fr 00 I~ FF -- f- I DO'lble lByte(O«:"~ 12 12 00---4-f2~ 12 J! I 2 12 11 Deusity p-tuJltolDt< • 1 : This data byte IOcludes misSlng elock. • '2 : lOaddress • ):CRC : X'~+xlJ +X' +-1 121:l l{j 1R8 27 101 16 ~ß" ?~6-1"16 J)I 42 130 9 Density si"2 -16 603­ 58 ~ --5­ 256- I)""? 372 -- I~ I 266 16 Dovl.lle ~2 --rr- (i58 84 296 Y OClIS,ly. !~2..!. ---R. 120? .­7i6_f-­ ~ .,.--L r-' Oala G..p Gap Seclor J