CD-ROM Capabilities and Mechanical Status Page
TABLE 2-9-7A PARAMETER DESCRIPTION (CONTINUED)
Bit Parameter Description
19
Eject Command The drive can eject the disc via the normal START/STOP command
with the LoEj bit set.
23 ~ 21
Loading Mechanism Type This field specifies the type of disc loading the drive supports.
23 22 21
0 0 0 Caddy type loading mechanism
0 0 1 Tray type loading mechanism
0 1 0 Pop-up type loading mechanism
0 1 1 Reserved
1 X X Reserved
24
Separate Volume Levels The audio level for each channel can be controlled independently.
24
Separate Channel Mute The mute capability for each channel can be controlled
independently.
TABLE 2-9-7B EXAMPLE DATA RATES
Speed Data Rate
X1 176 Kbytes / second
X2 353 Kbytes / second
X2.2 387 Kbytes / second
X3 528 Kbytes / second
X4 706 Kbytes/second
The Maximum Speed Supported field indicates the actual maximum data rate that the
drive supports. This value is returned as the number of kilobytes per/second
(Speed/1000) that the data is read from the drive.
Note that these are the raw data rates and do not reflect any overhead resulting from
headers, error correction data, etc. It is also important to understand that the reported
data rate is a theoretical maximum and the actual data rates to the host will be lower.
The Number of Volume Levels Supported field returns the number of discrete levels. If
the drive only supports turning audio on and off, the Number of Volume Levels field
shall be set to 2.
