Table 67 Configure Stream Command (51H); Configure Stream (51H) - Hitachi HDS723020BLA642 Specifications

11.2 Configure Stream (51h)

Command Block Output Registers
Register
Data Low
Data High
Current
Feature
Previous
Current
Sector Count
Previous
Current
Sector Number
Previous
Current
Cylinder Low
Previous
Current
Cylinder High
Previous
Device/Head
Command
Error Register
7 6 5 4
CRC UNC 0 IDN
0 0 0 0

Table 67 Configure Stream Command (51h)

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.
Abort conditions for Error register are the following.
 The device does not support the Streaming Feature Set.
 A/R is cleared to zero and the Feature field contains a Stream ID that has not been sent in a previous
CONFIGURE STREAM command.
7 6 5 4 3 2 1
- - - - - - -
- - - - - - -
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 1 1 D - - -
0 1 0 1 0 0 0
3 2 1
0 ABT T0N
0 V 0
Hitachi hard disk drive specifications
Command Block Input Registers
0 Register
- Data Low
- Data High
V
Error
V
V HOB=0
Sector Count
V HOB=1
- HOB=0
Sector Number
- HOB=1
- HOB=0
Cylinder Low
- HOB=1
- HOB=0
Cylinder High
- HOB=1
- Device/Head
1 Status
0 7 6
AMN BSY RDY
0 0 V
112
7 6 5 4 3 2 1 0
- - - - -
- - - - -
...See Below...
- - - - -
- - - - -
- - - - -
- - - - -
- - - - -
- - - - -
- - - - -
- - - - -
- - - - -
...See Below...
Status Register
5 4 3 2
SE DSC DRQ COR
0 V - 0
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
1 0
IDX ERR
- V