Fujitsu MAN3735 Manuale Utente
C141-E124-01EN
4 - 19
4.1.4
Drive parameter (page code = 4)
The page descriptor format of this MODE SELECT parameter is shown in Figure 4.4.
Bit
Byte
Byte
7
6
5
4
3
2
1
0
0
0
0
0
0
0
1
0
0
1
X‘16’, X‘12’ or X‘0A’ (Page Length)
2-4
Cylinder Count
Default
X‘00xxxx’
Variable
X‘000000’
5
Number of Heads
Default
X‘00xx’
Variable
X‘0000’
6-8
"Write Precompensation" Starting Cylinder
Default
X‘000000’
Variable
X’000000’
9-11
"Reduced Write Current" Starting Cylinder
Default
X‘000000’
Variable
X‘000000’
12-13
Drive Step Rate
Default
X‘0000’
Variable
X‘0000’
14-16
Landing Zone Cylinder
Default
X‘000000’
Variable
X‘000000’
17
0
0
0
0
0
0
RPL
Default
0
0
0
0
0
0
0
0
Variable
0
0
0
0
0
0
0
0
18
Rotational Synchronization Offset
Default
X‘00’
Variable
X‘00’
19
X‘00’ (Reserved)
20-21
Rotational Speed
Default
X’2729’ or X’3A98’
Variable
X‘0000’
22-23
X‘0000’ (Reserved)
Figure 4.4
MODE SELECT parameters: drive parameters
Note:
When transfer of this page is requested by the MODE SENSE or MODE SENSE
EXTENDED command, the IDD reports X '16' as the page length. However, in the MODE
SELECT and MODE SELECT EXTENDED commands, if either X '16,' X '12' or X '0A' is
specified, it is treated as if the IDD has specified the correct page length. The X '12' and X
'0A' page lengths have been included in consideration of compatibility with previous models,
but it is recommended that the INIT use the X '16' page length to support expanded
specifications in the future.
EXTENDED command, the IDD reports X '16' as the page length. However, in the MODE
SELECT and MODE SELECT EXTENDED commands, if either X '16,' X '12' or X '0A' is
specified, it is treated as if the IDD has specified the correct page length. The X '12' and X
'0A' page lengths have been included in consideration of compatibility with previous models,
but it is recommended that the INIT use the X '16' page length to support expanded
specifications in the future.
(See the
"Note")
"Note")
(10,025 rpm or
15,000 rpm)
15,000 rpm)