IBM DTTA-351010 Hard Drive Specifications - Page 154

Sleep, E6h/99h

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12.30 Sleep (E6h/99h) Command Block Output Registers Register 76543210 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 1D Command 11100110 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 112. Sleep Command (E6h/99h) This command causes the device to enter Sleep Mode. The device is spun down and the interface becomes inactive. If the device is already spun down, the spin down sequence is not executed. The only way to recover from Sleep Mode is with a software reset or a hardware reset. 146 OEM Specifications for DTTA-3xxxxx

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12.30
Sleep
(E6h/99h)
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
11100110
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 112. Sleep Command (E6h/99h)
This command causes the device to enter Sleep Mode.
The device is spun down and the interface becomes inactive.
If the device is already spun down, the spin
down sequence is not executed.
The only way to recover from Sleep Mode is with a software reset or a hardware reset.
146
OEM Specifications for DTTA-3xxxxx