IBM DTLA-305040 Hard Drive Specifications - Page 134

Idle E3h/97h

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12.7 Idle (E3h/97h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count V V V V V V V V Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 0 0 0 1 1 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 93. Idle Command (E3h/97h) The Idle command causes the device to enter Idle mode immediately and to set the auto power down time-out parameter (standby timer). And the timer then 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 Time-out Parameter. If it is zero, the automatic power down sequence is disabled. If it is non-zero, the automatic power down sequence is enabled. The time-out interval is shown below: Value ------- 0 1-240 241-251 252 253 254 255 Time-out Timer disabled Value * 5 seconds (Value-240) * 30 minutes 21 minutes 8 hours 21 minutes 10 seconds 21 minutes 15 seconds Deskstar 40GV & 75GXP hard disk drive specifications 122

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12.7 Idle (E3h/97h)
see below
Status
1 1 1 0 0 0 1 1
Command
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Sector Count
V V V V V V V V
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 93. Idle Command (E3h/97h)
The Idle command causes the device to enter Idle mode immediately and to set the auto power down
time-out parameter (standby timer). And the timer then 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
Time-out Parameter. If it is zero, the automatic power down sequence is dis-
abled. If it is non-zero, the automatic power down sequence is enabled. The
time-out interval is shown below:
21 minutes 15 seconds
255
21 minutes 10 seconds
254
8 hours
253
21 minutes
252
(Value-240) * 30 minutes
241-251
Value * 5 seconds
1-240
Timer disabled
0
------------------------
-------
Time-out
Value
Deskstar 40GV & 75GXP hard disk drive specifications
122