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Chapter 1 25
Hard Disk Drive Interface
Item Specification
Vendor &
Model Name
IBM 20G IBM 30G IBM 40G Toshiba
20G
(MK2018
)GAP
Toshiba
30G
(MK3021
)GAS
Toshiba
40G
(MK4021
)GAS
Hitachi
20G
DK23EA
-20F
Hitachi
30G
DK23EA
-30F
Hitachi
40G
DK23EA
-40F
Capacity (MB) 20000 30000 40000 20000 30000 40000 20000 30000 40000
Bytes per
sector
512 512 512 512 512 512 512 512 512
Data heads 234234234
Drive Format
Disks 122122122
Spindle speed
(RPM)
4200
RPM
4200
RPM
4200
RPM
4200
RPM
4200
RPM
4200
RPM
4200
RPM
4200
RPM
4200
RPM
Performance Specifications
Buffer size 2048KB 2048KB 2048KB 2048KB 2048KB 2048KB 2048KB 2048KB 2048KB
Interface ATA-5 ATA-5 ATA-5 ATA-5 ATA-5 ATA-5 ATA-5 ATA-5 ATA-5
Max. media
transfer rate
(disk-buffer,
Mbytes/s)
216 287 287 235
Data transfer
rate
(host~buffer,
Mbytes/s)
100 MB/
Sec.
Ultra
DMA
mode-5
100 MB/
Sec.
Ultra
DMA
mode-5
100 MB/
Sec.
Ultra
DMA
mode-5
100 MB/
Sec.
Ultra
DMA
mode-5
100 MB/
Sec.
Ultra
DMA
mode-5
100 MB/
Sec.
Ultra
DMA
mode-5
100 MB/
Sec.
Ultra
DMA
mode-5
100 MB/
Sec.
Ultra
DMA
mode-5
100 MB/
Sec.
Ultra
DMA
mode-5
DC Power Requirements
Voltage
tolerance
5V(DC)
+/- 5%
5V(DC)
+/- 5%
5V(DC)
+/- 5%
5V(DC)
+/- 5%
5V(DC)
+/- 5%
5V(DC)
+/- 5%
5V(DC)
+/- 5%
5V(DC)
+/- 5%
5V(DC)
+/- 5%
DVD-ROM Interface
Item Specification
Vendor & model name Toshiba SD-C2612
Performance Specification With CD Diskette With DVD Diskette
Transfer rate (KB/sec) Sustained:
Max 3.6Mbytes/sec
Sustained:
Max 10.8Mbytes/sec
Data Buffer Capacity 128 KBytes
Interface IDE/ATAPI
Applicable disc format DVD: DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18),DVD-R (read, single
border)
CD: CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, CD-I, CD-
I Bridge (Photo-CD, Video-CD) Multisession CD (Photo-CD, CD-EXTRA, CD-R,
CD-RW), CD-R (read), CD-RW (read)
Loading mechanism Load: Manual
Release: (a) Electrical Release (Release Button)
(b) Release by ATAPI command
(c) Emergency Release
Power Requirement
Input Voltage +5 V +/- 5 % (Operating)
+/- 8 % (Start up)