Intel 6 SERIES CHIPSET - DATASHEET 01-2011 - Page 597

Datasheet 597
SATA Controller Registers (D31:F2)
14.4.1.8 CAP2—HBA Capabilities Extended
Address Offset: ABAR + 24h–27h Attribute: RO
Default Value: 00000004h Size: 32 bits
Function Level Reset:No
14.4.1.9 VSP—Vendor Specific (D31:F2)
Address Offset: ABAR + A0h–A3h Attribute: RO, R/WO
Default Value: 00000001h Size: 32 bits
Bit Description
31:3 Reserved
2
Automatic Partial to Slumber Transitions (APST)
0= Not supported
1= Supported
1:0 Reserved
Bit Description
31:1 Reserved
0
SATA Initalization Field — R/WO
BIOS must clear this bit by writing a 0 to this field.