Power Save; Power Save Mode; Address Translation (Example In Lba Mode) - Fujitsu MPD3XXXAT Product Manual

(2) LBA mode
Logical address assignment in the LBA mode starts from physical cylinder 0, physical head 0,
and physical sector 1. The logical address is advanced at the subsequent sector from the last
sector of the current track. The first physical sector of the subsequent physical track is the
consecutive logical sector from the last sector of the current physical track.
Figure 6.6 shows an example of (assuming there is no track skew).
Physical sector
1
Physical cylinder 0
LBA
Physical head 0
1
Physical cylinder 0
LBA
406
Physical head 1
ex: Zone 0
Physical parameter
- Physical sector: 1 to 406 (For the rest, 2 spare sectors)
Figure 6.6
6.3

Power Save

The host can change the power consumption state of the device by issuing a power command
to the device.
6.3.1

Power save mode

There are four types of power consumption state of the device including active mode where all
circuits are active.
In the power save mode, power supplying to the part of the circuit is turned off. There are
three types of power save modes:
Idle mode
Standby mode
Sleep mode
The drive moves from the Active mode to the idle mode by itself.
Regardless of whether the power down is enabled, the device enters the idle mode. The device
also enters the idle mode in the same way after power-on sequence is completed.
6 - 8
2 3
. . . . . . . . . . . . . . . . . . . . . .
LBA LBA
0 1 2
. . . . . . . . . . . . . . . . . . . . . .
2 3
. . . . . . . . . . . . . . . . . . . . . .
LBA LBA
407 408
. . . . . . . . . . . . . . . . . . . . . .

Address translation (example in LBA mode)

C141-E069-02EN
405 406 407 408
LBA LBA SP SP
404 405
405 406 407 408
LBA LBA SP SP
810 811