Toshiba A85 1.4 Optical device Drives

1 Hardware Overview 1.4 Optical device Drives
1-12 [CONFIDENTIAL] Satellite A80/A85 Series Maintenance Manual
1.4 Optical device Drives
• DVD-ROM & CD-RW drive
• DVD Super Multi drive
1.4.1 DVD-ROM & CD-RW
The DVD Super Multi 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 1-2.
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, DVD-R (3.9G,4.7G), DVD-RW
(Ver.1.1), DVD-RAM, DVD+R, DVD+RW, DVD+R DL.
CD:
CD-DA, CD-ROM, CD-R, CD-RW, CD-ROMXA,
PhotoCD (muitiSession), Video CD, CD-Extra (CD+), CD-Text
Table 1- 2 DVD-ROM & CD-RW drive specifications