6.3 Power Save
(2) LBA mode
Logical address assignment in the LBA mode starts from physical cylinder 0, physical head 0, and physical sector 1. If the last sector of a physical track is used, the track is switched and the next LBA is assigned to the initial sector of the subsequent physical track.
Figure 6.6 shows an example of 4 heads configuration (assuming there is no track skew).
505229 230506
504228 505229
229505 23056
230506 | 231507 | 232508 | 1010458 | 1011459 |
6
5
506230
Figure 6.6 Address translation (example in LBA mode)
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
