HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
101
8.21.3
SCT Command Set
8.21.3.1
LBA Segment Access (action code : 0002h)
Inputs: (Key Sector)
Word Name
Value Description
0
Action Code
0002h
This action writes a pattern or sector of data repeatedly to
the media. This capability could also be referred to as “Write
All” or “Write Same”.
0001h
Repeat Write Pattern (Background Operation)
0002h
Repeat Write Sector (Background Operation)
0101h
Repeat Write Pattern (Blocking Operation)
1 Function
Code
0102h
Repeat Write Sector (Blocking Operation)
5:2
Start LBA
QWord
First LBA
9:6
Count
QWord
Number of sectors to fill
11:10
Pattern
DWord
If the Function Code is 0001h, this field contains a 32-bit
pattern that is written on the media starting at the location
specified in words two through five
255:12 reserved
0000h
Table 68 LBA Segment Access (Inputs)
Outputs: (TF Data)
Command Block Input Registers (Success)
Error 00h
Sector Count
Reserved
Sector Number
Reserved
Cylinder Low
Number of sectors to transfer (LSB) = 01h
Cylinder High
Number of sectors to transfer (MSB) = 00h
Device/Head reserved
Status 50h
Table 69 LBA Segment Access (Outputs)
The LBA Segment Access command will begin writing sectors from Start LBA in incrementing order until
Count sectors have been written. A Count of zero means apply operation from Start LBA until the last user
LBA on the drive is reached. The HPA feature determines the last user LBA. This command will not write
over a hidden partition when hidden partitions are enabled using the Host Protected Area drive capabilities.
Automatic sector reassignment is permitted during the operation of this function.
If Start LBA or Start LBA + Count go beyond the last user LBA then an error is reported and the SCT
command is not executed. Issuing this command with a value of zero for Start LBA and Count will cause all
LBAs of the drive to be written the specified pattern.
Once the key sector has been issued, if the Function Code was 0002h or 0102h and the TF Data indicates
that the drive is ready to receive data, log page E1h should be written to transfer the data.
Содержание 3.5-INCH Deskstar HDP725050GLAT80
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