Hitachi HDS728080PLAT20 Specifications - Page 127

Device Configuration Overlay B1h

Page 127 highlights

12.3 Device Configuration Overlay (B1h) Table 75: Check Power Mode Command (E5h/98h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature 1 0 1 0 V V V V Sector Count Sector Number Cylinder Low Cylinder High Device/Head - - - D - - - - Command 1 0 1 1 0 0 0 1 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count V V V V V V V V Sector Number Cylinder Low V V V V V V V V Cylinder High V V V V V V V V Device/Head Status see below 76 CRC UNC 00 Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 00 0 V 0 0 Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR V V0- V - - V 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. Table 76: Device Configuration Overlay Features register values Value C0h C1h C2h C3h other Command DEVICE CONFIGURATION RESTORE DEVICE CONFIGURATION FREEZE LOCK DEVICE CONFIGURATION IDENTIFY DEVICE CONFIGURATION SET Reserved 12.3.1 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. 12.3.2 DEVICE CONFIGURATION FREEZE LOCK (subcommand C1h) The DEVICE CONFIGURATION FREEZE LOCK command prevents accidental modification of the Device Configuration Overlay settings. After successful execution of a DEVICE CONFIGURATION FREEZE LOCK command, all DEVICE CONFIGURATION SET, DEVICE CONFIGURATION FREEZE LOCK, DEVICE CONFIGURATION IDENTIFY, and DEVICE CONFIGURATION RESTORE commands are aborted by the device. The DEVICE CONFIGURATION FREEZE LOCK condition shall be cleared by a power-down. The DEVICE CONFIGURATION FREEZE LOCK condition shall not be cleared by hardware or software reset. Deskstar 7K80 Hard Disk Drive Specification 123

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Deskstar 7K80 Hard Disk Drive Specification
123
12.3
Device Configuration Overlay (B1h)
Table 75: Check Power Mode Command (E5h/98h)
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.
Table 76: Device Configuration Overlay Features register values
12.3.1
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.
12.3.2
DEVICE CONFIGURATION FREEZE LOCK (subcommand C1h)
The DEVICE CONFIGURATION FREEZE LOCK command prevents accidental modification of the Device Con-
figuration Overlay settings. After successful execution of a DEVICE CONFIGURATION FREEZE LOCK com-
mand, all DEVICE CONFIGURATION SET, DEVICE CONFIGURATION FREEZE LOCK, DEVICE
CONFIGURATION IDENTIFY, and DEVICE CONFIGURATION RESTORE commands are aborted by the
device. The DEVICE CONFIGURATION FREEZE LOCK condition shall be cleared by a power-down. The
DEVICE CONFIGURATION FREEZE LOCK condition shall not be cleared by hardware or software reset.
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
Value
Command
C0h
DEVICE CONFIGURATION RESTORE
C1h
DEVICE CONFIGURATION FREEZE LOCK
C2h
DEVICE CONFIGURATION IDENTIFY
C3h
DEVICE CONFIGURATION SET
other
Reserved