Fujitsu MHT2040BH, MHT2060BH, MHT2080BH Serial ATA Functions, Automatic Acoustic Management AAM

Models: MHT2080BH MHT2060BH MHT2040BH

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5.3 Host Commands

*3) Serial ATA Functions

The host can enable and disable the following Serial ATA functions by issuing this command after setting X'10/90' in the Features field and an applicable value in the Sector Count field:

Serial ATA function

Sector Count field

 

 

Non-zero buffer offset in DMA Setup FIS

01h (*1)

DMA Setup FIS Auto-Activate optimization

02h (*2)

Device-initiated interface power state Transitions

03h (*3)

Guaranteed In-Order Data Deliverry

04h (*1)

Asynchronous Notification

05h (*1)

 

 

*1 The device normally responds to the command but performs no operation.

*2 This feature is prohibited when power is on. While this function is enabled, the device does not return the DMA Activate FIS for the first data sector after the WRITE FP DMA QUEUED command is issued.

*3 This specification is prohibited when power on. While this function is enabled, the device perform interface power save.

*4) Automatic Acoustic Management (AAM)

The host writes to the Sector Count filed with the requested acoustic management level and executes this command with subcommand code 42h, and then Automatic Acoustic Management is enabled. The AAM level setting is preserved by the drive across power on and COMRESET.

AAM Level

Sector Count Filed

 

 

Performance mode (Fast Seek)

C0h-FEh

Acoustic mode (Slow Seek)

80h-BFh

Abort

01h-7Fh

Non Operate

00h, FFh

 

 

High-speed seek to which gives priority to the performance operates as for "Performance mode", and low-speed seek by which the seek sound is suppressed operates as for "Acoustic mode".

Setting the seek mode by this command is applied to the seek operation in all command processing.

C141-E203-01EN

5-101

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Fujitsu MHT2040BH, MHT2060BH, MHT2080BH manual Serial ATA Functions, Automatic Acoustic Management AAM