IBM DTTA-351010 Hard Drive Specifications - Page 118

Idle, E3h/97h

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12.6 Idle (E3h/97h) Command Block Output Registers Register 76543210 Data Feature Sector Count V V V V V V V V Sector Number Cylinder Low Cylinder High Device/Head 1 1D Command 11100011 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 84. Idle Command (E3h/97h) The Idle command causes the device to enter Idle mode immediately, and set auto power down timeout parameter(standby timer). And then the timer starts counting down. When the Idle mode is entered, 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. Output Parameters To The Device Sector Count Timeout Parameter. If zero, then the automatic power down sequence is disabled. If non-zero,then the automatic power down sequence is enabled,and the timeout interval is shown blow: Value ----------- 0 1 - 240 241 - 251 252 253 254 255 Timeout Timer disabled Value * 5 seconds (Value-240) * 30 minutes 21 minutes 8 hours 21 minutes 10 seconds 21 minutes 15 seconds 110 OEM Specifications for DTTA-3xxxxx

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12.6 Idle
(E3h/97h)
Command Block Output Registers
Command Block Input Registers
Register
76543210
Register
76543210
Data
Data
Feature
Error
...See Below...
Sector Count
VVVVVVVV
Sector Count
Sector Number
Sector Number
Cylinder Low
Cylinder Low
Cylinder High
Cylinder High
Device/Head
1
1D
Device/Head
Command
11100011
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 84. Idle Command (E3h/97h)
The Idle command causes the device to enter Idle mode immediately, and set auto power down timeout
parameter(standby timer). And then the timer starts counting down.
When the Idle mode is entered, 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.
Output Parameters To The Device
Sector Count
Timeout Parameter.
If zero, then the automatic power down sequence is disabled.
If
non-zero,then
the
automatic
power
down
sequence
is
enabled,and
the
timeout
interval is shown blow:
Value
Timeout
-----------
---------------------------
0
Timer disabled
1 - 240
Value * 5
seconds
241 - 251
(Value-240) * 30 minutes
252
21 minutes
253
8 hours
254
21 minutes 10 seconds
255
21 minutes 15 seconds
110
OEM Specifications for DTTA-3xxxxx