
SATA Technical Overview 71
Table 2.29 Host to Device FIS—Example
byte n+3 byte n+2 byte n+1 byte n
SOF D23.1 D23.1 D21.5 K28.3
Data dword 0 Features 7:0 Command c r r r PM Port FIS Type (27h)
Data dword 1
Device
[Dev/Head]
LBA 23:16
[Cyl High]
LBA 15:8
[Cyl Low]
LBA 7:0
[Sector Number]
Data dword 2 Features 15:8
LBA 47:40
[Cyl High (exp)]
LBA 39:32
[Cyl Low (exp)]
LBA 31:24
[Sector # (exp)]
Data dword 3 Control ICC
Count 15:8
[Sector Cnt (exp)]
Count 7:0
[Sector Count]
Data dword 4 Reserved Reserved Reserved Reserved
CRC Dxx.y Dxx.y Dxx.y Dxx.y
EOF D21.6 D21.6 D21.5 K28.3
Note: c = Command bit; r = reserved; ICC = Isochronous Command Completion.
Table 2.30 Device to ...