Appendix
38
Writing Methods
Disc-at-Once (DAO)
Session-at-Once (SAO)
Track-at-Once (TAO)
Packet Writing
Writing/Reading Speed
Writing
CD-R
1X, 2X, 4X, 8X, 12X (CLV),
16X (12X – 16X Partial CAV),
20X (12X – 20X Partial CAV)
CD-RW
2X, 4X, 8X, 10X (CLV),
4X – 10X Full CAV
Reading
40X (max.) Full CAV
Note) • DATA: 40X (max.)
• CD-DA: 40X (max.) in audio extraction
• CD-DA: 1X only in audio play
• Video CD: 10X (max.)
• Session closed disc: 40X (max.)
• Session unclosed disc: 12X (max.)
CD-R
1X, 2X, 4X, 8X, 12X, 16X (12X – 16X Partial CAV),
20X (12X – 20X Partial CAV) writing:
Write Once discs specified in Orange Book Part II Ver. 3.1.
Note) For 8X or faster writing, use CD-R discs matched their
respective writing speeds.
CD-RW
• 2X writing/rewriting: Rewritable discs specified in Orange
Book Part III Volume 1 Version 1.0.
• 2X or 4X writing/rewriting: Rewritable discs specified in
Orange Book Part III Volume 1 Version 2.0.
• 4X, 8X, 10X (CLV), 4X – 10X Full CAV writing/rewriting:
Rewritable discs specified in Orange Book Part III Volume 2
Version 1.0.
Data Capacity
700MB (79 min.)
650MB (74 min.)
550MB (63 min.)
Data Transfer Rate (Mode 1)
1X: 150KB/sec.
16X: 2,400KB/sec.
2X: 300KB/sec.
20X: 3,000KB/sec.
4X: 600KB/sec.
24X: 3,600KB/sec.
8X: 1,200KB/sec.
32X: 4,800KB/sec.
10X: 1,500KB/sec.
40X: 6,000KB/sec.
12X: 1,800KB/sec.
Burst Transfer Rate
• Programmed I/O mode 4:
16.7MB/sec.
• Multiword DMA mode 2:
16.7MB/sec.
• Ultra DMA mode 2 (Ultra DMA/33): 33.3MB/sec.
Data Buffer Size
8MB (3,224 sectors)
Average Random Access Time
150 msec. (reading)
Sector Size
2,048 – 2,352 bytes
Interface
Enhanced IDE (E-IDE)/ATAPI