
Interface
*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 Delivery
04h (*1)
05h (*1)
Software Settings Preservation
06h (*4)
Asynchronous Notification
*1 The device normally responds to the command but performs no
operation.
*2 This feature is disabled 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 feature is disabled when power is on. While this function is
enabled, the device perform interface power save.
*4: This feature is enabled when power is on. While this function is enabled,
the device preserves the software settings across COMRESET.
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Summary of Contents for MHW2040BS
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