5.3 Host Commands

*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-E224

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Fujitsu MHV2040BH, MHV2120BH, MHV2100BH, MHV2080BH, MHV2060BH manual Automatic Acoustic Management AAM