Hitachi IC25N040ATCS04-0 Specifications - Page 196

Standby Immediate E0h/94h

Page 196 highlights

13.34 Standby Immediate (E0h/94h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 0 0 0 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 00000V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 V - 0 -V Figure 135. Standby Immediate command (E0h/94h) The Standby Immediate command causes the device to enter the Standby mode immediately. When this command is issued, the device confirms the completion of the cached write commands before it asserts the INTRQ. Following the INTRQ the interface remains active and the device is spun down. If the device is already spun down, the spin down sequence is not executed. During the Standby mode the device will respond to commands, however there will be a delay while waiting for the spindle to reach operating speed. The Standby Immediate command will not affect the auto power down time-out parameter. Hitachi Travelstar 60GH & 40GN hard disk drive specifications 183

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13.34 Standby Immediate (E0h/94h)
see below
Status
1 1 1 0 0 0 0 0
Command
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Sector Count
- - - - - - - -
Sector Count
see below
Error
- - - - - - - -
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input Registers
Command Block Output Registers
V
-
0
-
V
0
V
0
0
0
V
0
0
0
0
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 135. Standby Immediate command (E0h/94h)
The Standby Immediate command causes the device to enter the Standby mode immediately.
When this command is issued, the device confirms the completion of the cached write commands before it
asserts the INTRQ. Following the INTRQ the interface remains active and the device is spun down.
If the
device is already spun down, the spin down sequence is not executed.
During the Standby mode the device will respond to commands, however there will be a delay while wait-
ing for the spindle to reach operating speed.
The Standby Immediate command will not affect the auto power down time-out parameter.
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
183