Datasheet

12.6.4 Standby timer

The standby timer provides a method for the device to automatically enter standby mode from either

active or idle mode following a host programmed period of inactivity. If the device is in the active or idle

mode the device waits for the specified time period and if no command is received, the device automa-

tically enters the standby mode.

If the value of SECTOR COUNT register on IDLE command or STANDBY command is set to 00h, the

device will automatically set the standby timer to 109 minutes.

12.6.5 Status

In the active, idle, and standby modes, the device must have RDY bit of the status register set. If BSY bit

is not set, device must be ready to accept any command.

In sleep mode the device's interface is not active. A host must not attempt to read the device's status or

issue commands to the device.

12.6.6 Interface Capability for Power Modes

Each power mode affects the physical interface as defined in the following figure:

InactiveYes10Standb

ActiveYes10Idle

ActiveYesxxActive

MediaInterface activeRDYBSYMode

Figure 66. Power conditions

Ready (RDY) is not a power condition. A device may post ready at the interface even though the media

may not be accessible.

12.6.7 Initial Power Mode at Power On

After a power on or a hard reset the device goes to an IDLE mode or STANDBY mode depending on the

option.

Hard disk drive specification for DSCM-11000/-10512/-10340