Fujitsu MHY2160BS manual Automatic Acoustic Management AAM, Write-Read-Verify feature optional

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.

*5) Write-Read-Verify feature (optional)

SN	SC	Description
00h (Mode 0)	-	Enabled Always
01h (Mode 1)	-	The first 65,536 logical sectors written by the host
		after every spin-up (or reset) or after issuing this
		set features shall be verified.
02h (Mode 2)	-	Device may determine, for itself, how many logical
		sectors to do.
03h (Mode 3)	Verify count	The first (Verify Sector Count x 1024) logical
		sectors written by the host after every spin-up or
		after issuing this set features shall be verified.
04h-FFh	-	Reserved (Abort)

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