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Travelstar 5K160 (SATA) Hard Disk Drive Specification
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12.5.3 Standby/Sleep command completion timing
1. Confirm the completion of writing cached data in the buffer to media
2. Unload heads on the ramp
3. Set DRDY bit and DSC bit in Status Register
4. Activate the spindle break to stop the spindle motor
5. Wait until spindle motor is stopped
6. Perform post process
12.5.4 Status
In the active, idle and standby modes, the device shall have RDY bit of the status register set. If BSY
bit is not set, device shall be ready to accept any command.
In sleep mode, the device’s interface is not active. A host shall not attempt to read the device’s status
or issue commands to the device.
12.5.5 Interface Capability for Power Modes
Each power mode affects the physical interface as defined in the following table:
Mode BSY RDY Interface active Media
Active x x Yes Active
Idle 0 1 Yes Active
Standby 0 1 Yes Inactive
Sleep x x No Inactive
Figure 10 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.
12.5.6 Initial Power Mode at Power On
After power on the device goes to IDLE mode or STANDBY mode depending on the option. Refer
HTS5416XXJ9SA00 Final Functional Specification (P/N TBD) for the initial power mode selection.
12.6 Advanced Power Management (Adaptive
Battery Life Extender 3) Feature
This feature provides power saving without performance degradation. The Adaptive Battery Life
Extender 3 (ABLE-3) technology intelligently manages transition among power modes within the
device by monitoring access patterns of the host.
This technology has three idle modes; Performance Idle mode, Active Idle mode, and Low Power Idle
mode.
This feature allows the host to select an advanced power management level. The advanced power
management level is a scale from the lowest power consumption setting of 01h to the maximum
performance level of FEh. Device performance may increase with increasing advanced power
management levels. Device power consumption may increase with increasing advanced power
management levels. The advanced power management levels contain discrete bands, described in the
section of Set Feature command in detail.
This feature set uses the following functions:
A SET FEATURES subcommand to enable Advanced Power Management
A SET FEATURES subcommand to disable Advanced Power Management