Mode Sense (6) Command (1Ah) - Maxtor Atlas 10K V Product Manual

5.14

MODE SENSE (6) Command (1Ah)

The MODE SENSE (6) command allows the initiator to read the drive's sector
descriptor and mode pages. The MODE SENSE Command Descriptor Sector is
shown in Table 5-89 and the data fields are described in Table 5-90. The Mode
Parameter Header is shown in Table 5-91 and the data fields are described in
Table 5-92.
Table 5-89
Bit
Byte
0
1
2
3
4
5
Table 5-90
Data Field
DBD
PC
Page Code
Sub Page Code
Table 5-91
Bit
Byte
0
1
2
3
MODE SENSE (6) Command Descriptor Block-Data Format
7 6 5
Reserved
PC
MODE SENSE Command-Field Descriptions
Disable Block Descriptor. When the value is 0, the drive returns its Block Descriptor
followed by the requested page(s). When the value is 1, the drive returns only the re-
quested pages.
Page Control. Determines which type of page values are returned. These values are:
00b Current
01b Changeable
10b Default
11b Saved
The Page Code field determines the pages to be returned to the initiator in the com-
mand's data-in buffer transfer. Refer to Table 5-49 and Table 5-93 for a complete list of
the Mode Pages (changeable and read-only). A Page Code of 3Fh causes all supported
pages to be returned.
The Sub Page Code field determines the sub pages to be returned to the initiator in the
command's data-in buffer transfer. A Sub Page Code of 0xFF causes all supported sub
pages to be returned.
Mode Parameter Header (6 Byte)-Data Format
7 6 5
4 3
Operation Code (1Ah)
DBD
Page Code
Sub Page Code
Allocation Length
Control
Description
4 3
Mode Data Length
Medium Type
Device-Specific Parameter
Block Descriptor Length
Maxtor Atlas 10K V
2 1 0
Reserved
2 1 0
5-65