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5.2 Configure Stream (51h)
Table 18: Configure Stream Command (51h)
Command Block Output
Registers
Register
Data Low
Data High
Feature
Current
Previous V V V V V V V V
Sector Count
Current
Previous V V V V V V V V
Sector Number
Current
Previous - - - - - - - -
Cylinder Low
Current
Previous - - - - - - - -
Cylinder High
Current
Previous - - - - - - - -
Device/Head
Command
7
6
5
CRC UNC
0
0
0
0
The Configure Stream command specifies the operating parameters of an individual stream. A Configure Stream
command may be issued for each stream that is to be added or removed from the current operating configuration. If
A/R = 1 and the specified ID is already valid at the device, the new parameters shall replace the old parameters,
unless Command Abort is returned (see abort conditions for Error Register). In this case the old parameters for the
specified Stream ID shall remain in effect.
Output Parameters To The Device
Feature Current bit 7 (A/R)
Feature Current bit 6 (R/W)
Feature Current bit 0.2 (Stream ID)
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
V V - - - V V V
V V V V V V V V
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 1 1 D - - - -
0 1 0 1 0 0 0 1
Error Register
4
3
2
1
IDN
0
ABT T0N AMN
0
0
V
0
If set to one, a request to add a new stream.
If cleared to zero, a request to remove a previous configured
stream is specified.
R/W specifies a read stream if cleared to zero and a write
stream if set to one.
The Stream ID shall be a value between 0 and 7.
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
48
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
...See Below...
HOB=0
- - - - - - - -
HOB=1
- - - - - - - -
HOB=0
- - - - - - - -
HOB=1
- - - - - - - -
HOB=0
- - - - - - - -
HOB=1
- - - - - - - -
HOB=0
V V V V V V V V
HOB=1
- - - - - - - -
- - - - - - - -
...See Below...
Status Register
5
4
3
2
COR IDX
0
V
-
0
1
0
ERR
-
V
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