CD-ROM Interface

Items

Specification

 

 

Vendor & Model Name

QSI SCR242

 

Mitsumi SR244W1

 

 

Performance Specification

 

 

 

Brust Data Transfer rate

PIO mode 4:

 

16.7 MB/sec Max. (Mode 0~4)

 

Multi-word DMA mode 2:

 

16.7 MB/sec Max. (Mode 0~2)

 

Ultra DMA mode 2:

 

33.3MB/sec Max.

 

 

Access time (typ.)

QSI-

 

Random: 90 ms

 

Full Stroke: 180 ms

 

Mitsumi-

 

Random: 100 ms

 

Full Stroke: 240 ms

 

 

Rotation speed

5100 rpm for QSI

 

5400 rpm for Mitsumi 24X CAV mode

 

 

Data Buffer Capacity

128 KB (built-in)

 

 

Interface

Compliant to ATA/ATAPI-6

 

 

Applicable disc format

QSI:

 

CD-DA, CD-ROM Mode-1, CD-ROM/XA Mode-2, Form-1 and Mode-2 Form-2, CD-i

 

Ready, Video-CD (MPEG-1), Karaoke CD, Photo-CD, Enhanced CD, CD Plus, CD

 

Extra, i-trax CD, CD-Text, CD-R and CD-RW

 

Mitsumi:

 

CD-DA, CD-ROM (Mode 1 and Mode2) CD-ROM XA (Mode 2 Form 1 and Form2),

 

CD-I (Mode2 Form 1 and Form 2), CD-I Bridge (Photo CD, CD EXTRA), Enhanced

 

CD, CD-RW, CD-R, CD-TEXT

 

 

Loading mechanism

Drawer with soft eject and emergency eject hole

 

 

Power Requirement

 

 

 

Input Voltage

+5V[DC]+/-5%

 

 

DVD-ROM Interface

Item

Specification

 

 

 

Vendor & model name

MKE SR-8177

 

 

 

 

Performance Specification

With CD Diskette

With DVD Diskette

 

 

 

Transfer rate (KB/sec)

Average Sustained:

DVD-5:

 

CAV mode

Normal Speed (1X) 11.08 Mbits/sec

 

775~1800 blocks/sec

CAV mode 36.67~88.64 Mbits/sec

 

(10.3X to 24X)

DVD-9/DVD-R:

 

1550~3600kBytes/sec (Mode 1)

Normal Speed (1X) 11.08 Mbits/sec

 

1768~4106 kBytes/sec (Mode 2)

CAV mode 36.67~88.64 Mbits/sec

 

 

 

Chapter 1

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Acer 1520 manual CD-ROM Interface, DVD-ROM Interface, Items Specification

1520 specifications

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