
SATA Application Layer 181
WRITE DMA QUEUED
Command code
CCh
Feature set
Overlapped feature set
– Mandatory for devices implementing the Overlapped feature set and not implementing the
PACKET Command feature set.
– Use prohibited for devices implementing the PACKET Command feature set.
Protocol
DMA QUEUED
Inputs
Register 76543210
Features Sector Count
Sector Count Tag na
LBA Low LBA (7:0)
LBA Mid LBA (15:8)
LBA High LBA (23:16)
Device obs LBA obs DEV LBA (27:24)
Command CCh
Features –
Number of sectors to be transferred. A value of 00h specifies that 256 sectors are to be transferred.
Sector count –
If the device supports command queuing, bits (7:3) conta