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

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 21