Interface Capability For Power Modes; Table 10. Power Conditions - Hitachi Deskstar 7K500 Specifications

If the value of the SECTOR COUNT register on Idle command or Standby command is set to 00h, the standby timer
is disabled.

3.6.4 Interface capability for power modes

Each power mode affects the physical interface as defined in the following table:
Table 10: Power conditions
Mode BSY
Active x
Idle o
Standby o
Sleep x
Ready (RDY) is not a power condition. A device may post ready at the interface even though the media may not be
accessible.
RDY Interface active
x Yes
1 Yes
1 Yes
x No
Deskstar 7K500 Hard Disk Drive Serial ATA Addendum
Media
Active
Active
Inactive
Inactive
13