Idle (E3H/97H) - IBM DTTA-351010 - Deskstar 10.1 GB Hard Drive Specifications

12.6 Idle (E3h/97h)

C o m m a n d B l o c k O u t p u t R e g i s t e r s
R e g i s t e r
D a t a
F e a t u r e
S e c t o r C o u n t
S e c t o r N u m b e r
C y l i n d e r L o w
C y l i n d e r H i g h
D e v i c e / H e a d
C o m m a n d
E r r o r R e g i s t e r
7 6 5
C R C U N C 0 I D N
0 0 0
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:
110
O E M Specifications for DTTA-3xxxxx
7 6 5 4 3 2 1 0
V V V V V V V V
1 1 D
1 1 1 0 0 0 1 1
4 3 2 1 0
0 A B T T 0 N A M N
0 0 V 0 0
C o m m a n d B l o c k I n p u t R e g i s t e r s
R e g i s t e r
D a t a
E r r o r
S e c t o r C o u n t
S e c t o r N u m b e r
C y l i n d e r L o w
C y l i n d e r H i g h
D e v i c e / H e a d
S t a t u s
S t a t u s R e g i s t e r
7 6 5 4
B S Y R D Y D F D S C D R Q C O R I D X E R R
0 V 0 V
Value Timeout
----------- ---------------------------
0 Timer disabled
1 - 240 Value * 5
241 - 251 (Value-240) * 30 minutes
252 21 minutes
253 8 hours
254 21 minutes 10 seconds
255 21 minutes 15 seconds
7 6 5 4 3 2 1 0
. . . S e e B e l o w . . .
. . . S e e B e l o w . . .
3 2 1 0
0 V
seconds