Toshiba M70 manual Optical device Drives Hardware Overview, Cd-Rw & Dvd-Rom

1.4 Optical device Drives 1 Hardware Overview

1.4Optical device Drives

?DVD-ROM & CD-RW drive

?DVD Super Multi drive supporting ±R Double Layer

1.4.1CD-RW & DVD-ROM

The combo drive accepts 12-cm (4.72- inch) and 8-cm (3.15- inch) discs. At maximum, the drive can play back a DVD at 8x speed, read CD-ROM at 24x speed, and write CD-R at 24x speed and CD-RW at 4x speed or High speed CD-RW at 10X or Ultra speed CD-RW at 24X speed.

The specifications of the DVD- ROM & CD-RW drive are listed in Table 1-3.

Item	DVD-ROM mode	CD-ROM mode
Data transfer rate (Mbytes/s)	33.3 (U-DMA transfer mode 2)
	16.6 (PIO mode 4, Multiword DMA mode 2)
Access time (ms)	180	150
Average random access
Data buffer size (Mbytes)	2MB
	DVD:
	DVD-VIDEO, DVD-ROM, DVD-R (3.9G,4.7G), DVD-RW
	(Ver.1.1), DVD-RAM, DVD+R, DVD+RW, DVD+R DL,
Formats supported	DVD-R DL.
	CD:
	CD-DA, CD-ROM Mode1, Mode2, , CD-R, CD-RW, CD-
	ROMXA Mode2 (Form1, Form2), Photo CD (single/multi-
	session), Enhanced CD (CD-EXTRA), CD-Text
Table 1-3	DVD-ROM & CD-RW drive specifications

Satellite M70 /Satellite Pro M70 Series Maintenance Manual [CONFIDENTIAL] 1-13