IBM DTCA-24090 Hard Drive Specifications - Page 120

Idle Immediate, E1h/95h

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12.9 Idle Immediate (E1h/95h) Command Block Output Registers Register 76543210 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 1D Command 11100001 Command Block Input Registers Register 76543210 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 76543210 BSY RDY DF DSC DRQ COR IDX ERR 0V0V 0 V Figure 69. Idle Immediate Command (E1h/95h) The Idle Immediate command causes the device to enter Idle mode. The device is spun up to operating speed. If the device is already spinning, the spin up sequence is not executed. During Idle mode the device is spinning and ready to respond to host commands immediately. The Idle Immediate command will not affect the auto power down timeout parameter. 112 OEM Specifications of DTCA-2xxxx 2.5 inch H D D

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12.9 Idle Immediate
(E1h/95h)
Command Block Output Registers
Command Block Input Registers
Register
76543210
Register
76543210
Data
Data
Feature
Error
...See Below...
Sector Count
Sector Count
Sector Number
Sector Number
Cylinder Low
Cylinder Low
Cylinder High
Cylinder High
Device/Head
1
1D
Device/Head
Command
11100001
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
0
0
0
0
0
V
0
0
0
V
0
V
0
V
Figure 69. Idle Immediate Command (E1h/95h)
The Idle Immediate command causes the device to enter Idle mode.
The device is spun up to operating speed.
If the device is already spinning, the spin up sequence is not
executed.
During Idle mode the device is spinning and ready to respond to host commands immediately.
The Idle Immediate command will not affect the auto power down timeout parameter.
112
OEM Specifications of DTCA-2xxxx 2.5 inch HDD