Deskstar T7K250 Hard Disk Drive Specification
222
12.50 Write FPDMA Queued (61h)
The Write FPDMA Queued command transfers one or more sectors of data from the host to the device, and then
the data is written to the disk media.
If an unrecoverable error occurs, the write will be terminated at the failing sector.
Output parameters to the device
Sector Count Current
The number of continuous sectors to be transferred low order, bits (7:0)
Sector Count Previous
The number of continuous sectors to be transferred low order, bits (15:8). If zero
is specified in the Sector Count register, 65,536 sectors will be transferred.
Sector Number Current
LBA (7:0)
TAG (bits 7-3)
The TAG value shall be assigned to be different from all other queued commands.
The value shall not exceed the maximum queue depth specified by the Word 75 of the
Identify Device information.
Sector Number Previous
LBA (31:24)
Cylinder Low Current
LBA (15:8)
Cylinder Low Previous
LBA (39:32)
Cylinder High Current
LBA (23:16)
Cylinder High Previous
LBA (47:40)
Device/Head
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 Low
- - - - - - - -
Data Low
- - - - - - - -
Data High
- - - - - - - -
Data High
- - - - - - - -
Feature
Current
V V V V V V V V
Error see
below
Previous
V V V V V V V V
Sector
Count
Current
V V V V V - - -
Sector
Count
HOB=0
- - - - - - - -
Previous
- - - - - - - -
HOB=1
- - - - - - - -
Sector
Number
Current
V V V V V V V V
Sector
Number
HOB=0
V V V V V V V V
Previous
V V V V V V V V
HOB=1
V V V V V V V V
Cylinder
Low
Current
V V V V V V V V
Cylinder
Low
HOB=0
V V V V V V V V
Previous
V V V V V V V V
HOB=1
V V V V V V V V
Cylinder
High
Current
V V V V V V V V
Cylinder
High
HOB=0
V V V V V V V V
Previous
V V V V V V V V
HOB=1
V V V V V V V V
Device/Head
V 1 - 0 - - - -
Device/Head
- - - - - - - -
Command
0 1 1 0 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
V
0
0
V
0
V
0
0
0
V
0
V
-
0
-
V
Summary of Contents for HDT722516DLA380
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