82801FB Datasheet, PDF (463/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

SATA Controller Registers (D31:F2)
12.1.15 ABAR — AHCI Base Address Register
(SATA–D31:F2)
12.1.15.1 Intel^® ICH6 Only
Address Offset: 24h–27h
Default Value: 00000000h
Attribute:
Size:
RO
32 bits
Bit
31:0 Reserved
Description
Note: For ICH6, this register is Reserved and Read Only, unless the SCRAE bit (offset 94h:bit 9) is
set, in which case the register follows the definition given in Section 12.1.15.2.
12.1.15.2 Intel^® ICH6R / ICH6-M Only
Address Offset: 24h–27h
Default Value: 00000000h
Attribute:
Size:
R/W, RO
32 bits
This register allocates space for the memory registers defined in Section 12.3.
Bit
Description
31:10 Base Address (BA) — R/W. Base address of register memory space (aligned to 1 KB)
9:4 Reserved
3 Prefetchable (PF) — RO. This bit indicates that this range is not pre-fetchable
2:1
Type (TP) — RO. This bit indicates that this range can be mapped anywhere in 32-bit address
space.
0
Resource Type Indicator (RTE) — RO. Hardwired to 0 to indicate a request for register memory
space.
NOTES:
1. When the MAP.MV register is programmed for combined mode (00b), this register is RO. Software is
responsible for clearing this bit before entering combined mode.
2. The ABAR register must be set to a value of 0001_0000h or greater.
12.1.16
SVID—Subsystem Vendor Identification Register
(SATA–D31:F2)
Address Offset:
Default Value:
Lockable:
2Ch–2Dh
0000h
No
Attribute: R/WO
Size:
16 bits
Power Well: Core
Bit
Description
15:0
Subsystem Vendor ID (SVID) — R/WO. Value is written by BIOS. No hardware action taken on this
value.
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
463