Hitachi HDS721032CLA362 Manual De Usuario
Hitachi hard disk drive specifications
110
11.3 Device Configuration Overlay (B1h)
Command Block Output Registers
Command Block Input Registers
Register
7
6
5
4
3
2
1
0
Register
7
6
5
4
3
2
1
0
Data
-
-
-
-
-
-
-
-
Data
-
-
-
-
-
-
-
-
Feature
1
0
1
0
V
V
V
V
Error
...See Below...
Sector Count
-
-
-
-
-
-
-
-
Sector Count
V
V
V
V
V
V
V
V
Sector Number
-
-
-
-
-
-
-
-
Sector Number
-
-
-
-
-
-
-
-
Cylinder Low
-
-
-
-
-
-
-
-
Cylinder Low
V
V
V
V
V
V
V
V
Cylinder High
-
-
-
-
-
-
-
-
Cylinder High
V
V
V
V
V
V
V
V
Device/Head
-
-
-
D
-
-
-
-
Device/Head
-
-
-
-
-
-
-
-
Command
1
0
1
1
0
0
0
1
Status
...See Below...
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC
UNC
0
IDN
0
ABT
T0N
AMN
BSY
RDY
DF
DSC
DRQ
COR
IDX
ERR
0
0
0
0
0
V
0
0
V
V
0
-
V
-
-
V
Table 71 Device Configuration Overlay Command (B1h)
Individual Device Configuration Overlay feature set commands are identified by the value placed in the Features
register. The table below shows these Features register values.
register. The table below shows these Features register values.
Value
Command
C0h
DEVICE CONFIGURATION RESTORE
C1h
DEVICE CONFIGURATION FREEZE LOCK
C2h
DEVICE CONFIGURATION IDENTIFY
C3h
DEVICE CONFIGURATION SET
other
Reserved
Table 72 Device Configuration Overlay Features register values
11.3.1
Device Configuration Restore (Subcommand C0h)
The Device Configuration Restore command disables any setting previously made by a Device Configuration
Set command and returns the content of the Identify Device or Identify Packet Device command response to the
original settings as indicated by the data returned from the execution of a Device Configuration Identify
command.
Set command and returns the content of the Identify Device or Identify Packet Device command response to the
original settings as indicated by the data returned from the execution of a Device Configuration Identify
command.