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Write FPDMA Queued (61h)
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
HOB=0
-
-
-
-
-
-
-
-
Sector Count
Current
V
V
V
V
V
-
-
-
Sector Count
Previous
-
-
-
-
-
-
-
-
HOB=1
-
-
-
-
-
-
-
-
HOB=0
V
V
V
V
V
V
V
V
Sector Number
Current
V
V
V
V
V
V
V
V
Sector Number
Previous
V
V
V
V
V
V
V
V
HOB=1
V
V
V
V
V
V
V
V
HOB=0
V
V
V
V
V
V
V
V
Cylinder Low
Current
V
V
V
V
V
V
V
V
Cylinder Low
Previous
V
V
V
V
V
V
V
V
HOB=1
V
V
V
V
V
V
V
V
HOB=0
V
V
V
V
V
V
V
V
Cylinder High
Current
V
V
V
V
V
V
V
V
Cylinder High
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
Table 257 Write FPDMA Queued Command (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
Feature Current
The number of sectors to be transferred low order, bits (7:0).
Feature Previous
The number of sectors to be transferred high order, bits (15:8).
Sector Count Current
.
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 Count Previous
PRIO (bits 7-6)
The Priority (PRIO) value shall be assigned by the host based on the priority of the
command issued. The device makes a best effort to complete High priority requests
in a more timely fashion than Normal and isochronous priority requests. The device
tries to complete isochronous requests prior to its associated deadline. The Priority
values are defined as follows:
00b Normal priority
01b Isochronous – deadline dependent priority
10b High priority
Sector Number Current
LBA (7:0)
Sector Number Previous
LBA (31:24)
Cylinder Low Current
LBA (15:8)
309
Western Digital Ultrastar DC HC310 SATA Product Manual