Sony SMO-D501 Operating instructions

Magneto Optical Disk Drive
SMO-D501
Specification
and Operating instructions
version 1.0
Information in this document is subject to change without notice.

CONTENTS
1. Overview 1
2. Specifications 2
2.1 Drive Specifications 2
2.2 Format Specifications 5
2.2.1 Modulation Code 5
2.2.2 Sector Format 6
2.2.3 Data Field Format 1
1
3. System Configuration 14
3.1 Optical Head 1q
3.2 Laser Diode Drive Block 1e
3.3 Data Separation Block is
3.4 Servo Blocks 16
3.5 Bias Magnet Control Block 1
7
3.6 Loading Block 17
3.7 MPU Block 1
7
3.8 lOP Block 7
3.9 MDA Block 17
4. Setting Up
4.1 Locating the Disk Drive 18
4.2 System Cabling 19
5. Drive Interface Explanation 20
5.1 Physical Interface 20
5.1.1 Electrical Interface 20
5.1.2 Control Signal Drivers and Receivers 20
5.1.3 Data Line Drivers and Receivers 21
5.1.4 Connectors 22
5.2 Signal Lines 23
5.2.1
Pin Assignments 23
5.2.2 Control Out Lines 24
5.2.2.1 DRIVE SELECT 2(0).2(1),2(2) 24
5.2.2.2 WRITE GATE 24
5.2.2.3 READ GATE 25
5.2.2.4 COMMAND DATA 25
5.2.2.5 TRANSFER REQ 25
5.2.2.6 SPIRAL 25
5.2.3 Control In Lines 26

5.2.3.1 DRIVE SELECTED 26
5.2.3.2 READY 26
5.2.3.3 CONFIG/STATUS DATA 26
5.2.3.4 TRANSFER ACK 26
5.2.3.5 ATTENTION 26
5.2.3.6 INDEX 27
5.2.3.7 SECTOR 27
5.2.3.8 COMMAND COMPLETE 27
5.2.4
DATA TRANSFER LINES 28
5.2.4. 1NRZ WRITE DATA 28
5.2.4.2 NRZ READ DATA 28
5.2.4.3 READ/REFERENCE CLOCK 28
5.2.4.4 WRITE CLOCK 28
5.3. COMMANDS AND RESPONSES 28
5.3.1 COMMAND STRUCTURE 28
5.3.2 COMMANDS 29
5.3.3 RESPONSES AND STATUS 30
5.3.4 Seek (0000) 30
5.3.5 RECALIBRATE (0001) 31
5.3.6 REQUEST STATUS (0010) 31
5.3.7 REQUEST CONFIGURATION (0011) 37
5.3.9 CONTROL (0101) 40
5.3.12 INITIATE DIAGNOSTICS (1000) 41
5.3.14 SET HIGH ORDER VALUE (1010) 42
5.3.18 SET CONFIGURATION (1110) 43
5.3.19 Reserved for LINKING (1111) 44
6. Hardware Guide 45
6.1 Front Panel 45
6.1.1 BUSY Indicator 45
6.1.2 EJECT button 45
6.1.3 Emergency Eject Hole 45
6.2 Rear Panel 46
6.2.1
Drive Number Switch 47
6.2.3 ESDI Control Connector (J1
)
48
6.2.4 ESDI Data Connector (J2 )49
6.2.5 ESDI DC Power Connector (J3 )50

Owner's Record
The model and serial numbers are located at the rear of the drive unit. Record these numbers
in the spaces provided below. Refer to them whenever you call upon your Sony dealer
regarding this product.
Model No. Serial No.
WARNING
This equipment generates, uses, and can radiate radio frequency energy and if not installed
and used in accordance with the instructions manual, may cause interference to radio
communications. It has been tested and found to comply with the limits for aClass A
computing device pursuant to Subpart Jof Part 15 of FCC Rules, which are designed to
provide reasonable protection against such interference when operated in acommercial
environment. Operation of this equipment in aresidential area is likely to cause interference in
which case the user at his own expense will be required to take whatever measures may be
required to correct the interference.
CAUTION
Use of controls or adjustments or performance of procedures other than those specified
herein may result in hazardous radiation exposure.
DANGER
Invisible laser
radiation when
open. Avoid direct
exposure to beam.
DANGER
Radiations invisibles du
laser en cas d'ouvenure.
Eviter toute exposition
directs au faisceau.
4-614 -487-02
This label is affixed both on the top cover and front left corner of the inside cartridge tray.

1.Overview
The Sony SMO-D501 is an erasable optical disk drive using a5.25 inch {130mm) magneto-
optical (MO) disk. It can store approximately 650 megabytes (1024 bytes per sector) or 594
megabytes (512 bytes per sector) of data, The SMO-D501 complies with the Continuous-
Composite Format of 130mm Optical Disk starxJard which has been completed at the October
1987 ISO committee meeting. The MO disk is pregrooved and formatted with 1024 bytes per
sector and 17 sedors per track, or 512 bytes per sector and 31 sectors per track, using aspiral
track configuration.
The SMO-D501 achieves adata transfer rate of 7.40 megabits per second using a2400 rpm
rotational speed. The seek time is improved by anewly developed servo system.
The SMO-D501 is connected to the SMO-C501 MO Disk Controller with an M-ESDI (Modified
Enhanced Small Device Interface) which follows the Preliminary ANSI Working Document
X3T9.3/87-005 Revision 2.0.
The SMO-D501 contains the mechanical and optical components, the analog circuitry for the
data separation, servo systems, and the digital circuitry for drive control, formatting and
Interfacing with the disk controller. The use of new digital LSI's has resulted in acompact drive
with ahigh degree of reliability.
Soction 1: Overview 1

2. Soeelftcatlons
The following specifications are defined for the 130 mm magneto optical disk drive SMO-
D501. The recorded format is the Continuous- Composite Format of ISO 130mm Optical Disk
Standards.
2.1 Drive Specifications
The specifications of the SMO-D501 are shown in Table 2.1 and Table 2.2.
2Section 2: Specification

Table 2.1 :SMO-D501 SPECIFICATIONS (1/2)
Item Specification Remarks
Disk 130mm (5.25 inch) Formatted Address ;
double sided MO Disk Track 0Sector 0to
with acartridge Track 18750 Sector 16or 30
Capacity 1M- 10®
Formatted (per disk) 650 Mbytes (1024 bytes/sector)
594 Mbytes (512 bytes/sector)
(per side) 325 Mbytes (1024 bytes/sector)
294 Mbytes (512 bytes/sector)
Unformatted (per side) 433.5 Mbytes (1024 bytes/sector)
433.6 Mbytes (512 bytes/sector)
Disk Format Continuous/Composite ISO standard type A
Rotational Mode CAV CAV; Constant Angular Velocity
Write/Read Side 2Double Sided
Bytes per Sector 1024 or 512
Sectors per Track 17 or 31
Total Tracks per Side 18751
Rotational Speed 2400 rpm CAV
Avaraae Latency 12.5 msec
Seek Time
1Track 1msec Only jumping time
(5 msec) (Including overhead time)
Short Stroke (±64 Tracks) 30 msec Including overhead time
Average 120 msec
Full Stroke 200 msec
Transfer Rate
Data Transfer Rate 7.40 Mbps bps «bits per second
User Data Transfer Rate 680 Kbytes/sec (1024 bytes/sector)
620 Kbytes/sec (512 bytes/sector)
Section 2: Specification 3

Table 2.2 :SMO-D501 SPECIFICATIONS (2/2)
Item Specification Remarks
Mechanical Dimension Not include the connector
Welqht 3Kg
Power Requirements
DC Voltage +5V±5% Ripple voKage < 50 mVpp
+12V±S% Ripple voltage <100 mVpp
DC Current
+5V 1A(max.)
+12V 1A(typ.)
2.5 A(max.) at spinning-up and seeking
Operating Mount Horizontal or Vertical
Mounting Tilt ±5’
Environmental
Operating
Temperature 5-40 ‘C Recommend to use acooling fan
Relative Humidity 10-30% Not condensing
Max. Wet-bulb Temp. 29 “C
Temperature Gradient 10»C/Hour
Non-operating No disk
Temperature -20 -60 “C
Relative Humidity 5-90 %
Laser Diode
Type Semiconductor Laser
(GaAIAs)
Wave Length 790 nm, Continuous
Output Power SOmWmax
Beam Divergence 60* ±1.5*
Vibration
Operating 0.25 G5to 500 Hz Sine Sweep
Non-operating 0.5 G5to 500 Hz Sine Sweep
Shock
Operating 3SG 3msec Half Sine Pulse.
Non-operating 89G 3msec Half Sine Puise
30G 23 msec Trapezoidal Pulse
Laser Product Classification :Class 1(lEC 825)
4Section 2: Specification

2.2 Format Specifications
The Sony SMO-D501 complies with the Continuous-Composite Format of 130mm Optical
Disk Standard which has been completed at the October 1987 ISO committee meeting. Refer
to the standard specifications for details.
R29.0 -30.0 mm Head-in Area
(Formatted with negative addresses)
R30.0 -60.0 mm Data Area
(Formatted with the addresses from Track 0Sector 0to Track
18750 Sector 16)
R60.0 -61 .0 mm Head-out Area
(Formatted with the addresses more than Track 18751)
User data and defect management information are written in the Data Area.
2.2.1 Modulation Code
The SMO-D501 implements (2,7)RLL as the modulation code. The recording method adopts
pit-positfon recording of the (2,7)RLL and the code is decoded by detecting the peak levels in
a read mode.
The (2,7)RLL code is translated as shown in Table 2.5.
Table 2.5 :(2,7)RLL Modulation Code
Input Data (2.7)RLL
10 0100
11 1000
000 000100
010 100100
Oil 001000
0010 00100100
0011 00001000
Section 2: Specification S

2.2.2 Sector Format
The Sector Format is defined in Fig.2.1. and Fig.2.2 The ID field contains the preformatted
triple ID'S and the Data field contains 1024 bytes or 512 bytesof user data.
Each signal in the format is defined as follows:
SM (Sector Mark): 5byte length to identify asector header.
{pattern] 5337333350010010010
~II I
mark bit length channel coding bit
VFO (Variable Frequency Oscillator Signals): 12 or 8byte length to synchronize the
PLO (Phase locked oscillator) with the read out signal.
[pattern]
VF01: 01001001001001 -—010 0 10
VFO 2: 10010010010010 -—010010
00010010010010 010010
VFO 3: 01001001001001 010010
AM (Address Mark): 1byte length to detect ID fields.
[pattern] 0100100000000100
6Section 2: Specification