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*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)
02h (*2)
Device-initiated interface power state Transitions 03h (*3)
Guaranteed In-Order Data Delivery 04h (*1)
Asynchronous Notification 05h (*1)
Software Settings Preservation 06h (*4)
DMA Setup FIS Auto-Activate optimization
*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.
5-124 C141-E269