1-12
400 Series
1.6
CD-ROM Drive
The 400 series internal CD-ROM drive accommodates either 12 cm (4.72") or 8 cm (3.15")
CDs (option with 400CS). It provides high-performance, quadruple-speed play (reads 300KB
per second). This drive supports the following formats:
Audio CD
Photo CD
ISO 9660
The 400 series CD-ROM drive is shown in figure 1-7.
Figure 1-7 CD-ROM
The specifications for the CD-ROM drive are listed in table 1-3.
Table 1-3 CD-ROM specifications
Item
1
✕
mode
2
✕
mode
4
✕
mode
Data Capacity (bytes/block)
Mode 1
2,048
2,048
2,048
Mode 2
2,336
2,336
2,336
Transfer Rate
Sustained Block transfer speed (blocks/s)
75
150
300
Sustained Data transfer speed (kbytes/s)
Mode 1
150
300
600
Mode 2
171
342
684
ATAPI Burst (Mbytes/s)
3.33*
3.33*
3.33*
Access time (ms)
Average Random Access
360
255
210
Average Random Seek
250
210
185
Average Full Stroke Access
540
450
355
Rotation speed (rpm)
200 to 530
400 to 1,060
800 to 2,120
Data Buffer Capacity (Kbytes)
128
128
128
*
(PIO mode 0)