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5.50 Write Log Ext (3Fh)
Table 110: Write Log Ext Command (3Fh)
Command Block Output Registers
Register
Data Low
Data High
Feature
Current
Previous
Sector
Current
Count
Previous
Sector
Current
Number
Previous
Cylinder
Current
Low
Previous
Cylinder
Current
High
Previous
Device/Head
Command
7
6
5
CRC UNC
0
0
V
0
This command writes a specified number of 512 byte data sectors to the specific log. The device shall interrupt for
each DRQ block transferred.
Output parameters to the device
Sector Count Current
Sector Count Previous
Sector Number Current
Cylinder Low Current
Cylinder Low Previous
If the feature set associated with the log specified in the Sector Number register is not supported or enabled, or if
the values in the Sector Count, Sector Number or Cylinder Low registers are invalid, the device shall return com-
mand aborted. If the host attempts to write to a read only log address, the device shall return command aborted.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
V V V V V V V V
V V V V V V V V
V V V V V V V V
- - - - - - - -
V V V V V V V V
V V V V V V V V
- - - - - - - -
- - - - - - - -
- 1 - D - - - -
0 0 1 1 1 1 1 1
Error Register
4
3
2
1
IDN
0
ABT T0N AMN
V
0
V
0
The number of sectors to be written to the specified log low order, bits (7:0).
The number of sectors to be written to the specified log high orders, bits (15:8). If
the number of sectors is greater than the number indicated in the Log directory,
which is available in Log number zero, the device shall return command aborted.
The log transferred to the device shall be stored by the device starting at the first
sector in the specified log.
The log to be written as described in Table 44: "Log Address Definition" on
page 80. If the host attempts to write to a read only log address, the device shall
return command aborted.
The first sector of the log to be written low order, bits (7:0).
The first sector of the log to be written high order, bits (15:8).
Deskstar 7K500 Hard Disk Drive Serial ATA Addendum
Command Block Input Registers
Register
Data Low
Data High
Error
Sector
Count
Sector
Number
Cylinder
Low
Cylinder
High
Device/Head
Status
0
7
6
BSY RDY DF DSC DRQ
0
0
V
160
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
See below
HOB=0
- - - - - - - -
HOB=1
- - - - - - - -
HOB=0
- - - - - - - -
HOB=1
- - - - - - - -
HOB=0
- - - - - - - -
HOB=1
- - - - - - - -
HOB=0
- - - - - - - -
HOB=1
- - - - - - - -
- - - - - - - -
See below ...
Status Register
5
4
3
2
COR IDX
0
V
-
0
1
0
ERR
-
V
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