Idle (E3H/97H); Table 64 Idle Command (E3H/97H) - Hitachi HTS542516K9SA00 Specifications

14.9 Idle (E3h/97h)

Command Block Output Registers
Register
Data
Feature
Sector Count
LBA Low
LBA Mid
LBA High
Device
Command
Error Register
7 6 5 4
CRC UNC 0 IDN
0 0 0 0

Table 64 Idle Command (E3h/97h)

When the power save mode is Standby mode, the Idle command causes the device to enter
performance Idle mode immediately, and set auto power down timeout parameter(standby timer).
And then the timer starts counting down. When the device's power save mode is already any idle
mode, the device keep that mode.
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
Timeout Parameter. If zero, the timeout interval(Standby Timer) is
Sector Count
zero, the timeout interval is set for (Timeout Parameter x5) seconds.
The device will enter Standby mode automatically if the timeout interval expires with no
device access from the host. The timeout interval will be reinitialized if there is a device
access before the timeout interval expires.
7 6 5 4 3 2 1 0
- - - - - - - -
- - - - - - - -
V V V V V V V V
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
1 1 1 0 0 0 1 1
3 2 1 0
0 ABT T0N AM
N
0 V 0 0
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5K250 (SATA) OEM Specification
Command Block Input Registers
Register
Data
Error
Sector Count
LBA Low
LBA Mid
LBA High
Device
Status
Status Register
7 6 5 4
BSY RDY DF DSC DRQ COR IDX ERR
0 V 0 V
7 6 5 4 3 2 1 0
- - - - - - - -
...See Below...
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
...See Below...
3 2 1 0
- 0 0 V
disabled. If other than