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1 Hardware Overview 1.4 Optical Disc Device
1-8 Satellite A130/ A135 Series Maintenance Manual
1.4 Optical Disc Device
1.4.1 DVD-ROM & CD-RW
The DVD-ROM and CD-RW 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 high speed CD-RW at 10x speed or Ultra speed CD-RW at 24X speed.
The specifications of the DVD-ROM & CD-RW drive are listed in Table 1-2.
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)
Average random access
180 150
Data buffer size (Mbytes) 2MB
Formats supported
DVD:
DVD-VIDEO, DVD-ROM
CD:
CD-DA, CD-ROM, CD-R, CD-RW, CD-ROMXA,
PhotoCD (single/multi-session), CD-EXTRA, CD-Text
Table 1-2 DVD-ROM & CD-RW drive specifications