307013-003 Datasheet, PDF (497/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

SATA Controller Registers (D31:F2) (Desktop and Mobile Only)
12.1.13 SCNL_BAR—Secondary Control Block Base Address
Register (IDE D31:F1)
Address Offset: 1Ch–1Fh
Default Value: 00000001h
Attribute:
Size:
R/W, RO
32 bits
Bit
Description
31:16 Reserved
15:2
Base Address — R/W. This field provides the base address of the I/O space (4
consecutive I/O locations).
1 Reserved
0
Resource Type Indicator (RTE) — RO. Hardwired to 1 to indicate a request for I/O
space.
NOTE: This 4-byte I/O space is used in native mode for the Secondary Controller’s Command
Block.
12.1.14 BAR — Legacy Bus Master Base Address Register
(SATA–D31:F2)
Address Offset: 20h–23h
Default Value: 00000001h
Attribute:
Size:
R/W, RO
32 bits
The Bus Master IDE interface function uses Base Address register 5 to request a 16-
byte IO space to provide a software interface to the Bus Master functions. Only 12
bytes are actually used (6 bytes for primary, 6 bytes for secondary). Only bits [15:4]
are used to decode the address.
Bit
Description
31:16 Reserved
15:4
Base Address — R/W. This field provides the base address of the I/O space (16
consecutive I/O locations).
3:1 Reserved
0
Resource Type Indicator (RTE) — RO. Hardwired to 1 to indicate a request for I/O
space.
12.1.15 ABAR — AHCI Base Address Register
(SATA–D31:F2)
12.1.15.1 Non AHCI Capable (Intel^® ICH7 Feature Supported Components Only)
Address Offset: 24h–27h
Default Value: 00000000h
Attribute:
Size:
RO
32 bits
Bit
31:0 Reserved
Description
Intel ^® ICH7 Family Datasheet
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