IBM DJSA-210 - Travelstar 10 GB Hard Drive, Specifications

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4.5.3 Operating modes
Operating mode Description
Spin-Up: Start up time period from spindle stop or power down.
Seek: Seek operation mode
Write: Write operation mode
Read: Read operation mode
Performance: The device is capable of responding immediately to idle media access requests.
All electronic components remain powered and the full frequency servo remains
operational.
Active idle: The device is capable of responding immediately to media access requests.
Some circuitry—including servo system and R/W electronics—is in power saving
mode. The head is parked near the mid-diameter the disk without servoing.
A device in Active idle mode may take longer to complete the execution of a
command because it must activate that circuitry.
Low power idle: The head is unloaded onto the ramp position.
The spindle motor is rotating at full speed.
Standby: The device interface is capable of accepting commands.
The spindle motor is stopped. All circuitry but the host interface is in power saving
mode.
The execution of commands is delayed until the spindle becomes ready.
Sleep: The device requires a soft reset or a hard reset to be activated.
All electronics, including spindle motor and host interface, are shut off.
Figure 12. Operating mode
4.5.3.1 Mode transition time
9.5 1.8 Idle Standby DJSA-210/205
9.5 2.0 Idle Standby DJSA-230/220
9.5 4.5 Idle Standby DJSA-232
Transition
Time (max.)
Transition
Time (typ) To From Model
Figure 13. Drive ready time
4.5.3.2 Operating mode at power on
The device goes into Idle mode after power on or hard reset as an initial state. Initial state may be
changed to Standby mode using pin C on the interface connector. Refer to section 7.10 on page 57,
"Drive address setting", for details.
Travelstar 33GH/30GT/20GN hard disk drive specifications
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