82801FB Datasheet, PDF (287/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

LAN Controller Registers (B1:D8:F0)
8.1.11 CSR_MEM_BASE — CSR Memory-Mapped Base
Address Register (LAN Controller—B1:D8:F0)
Offset Address: 10–13h
Default Value: 00000008h
Attribute:
Size:
R/W, RO
32 bits
Note: The ICH6’s integrated LAN controller requires one BAR for memory mapping. Software
determines which BAR (memory or I/O) is used to access the LAN controller’s CSR registers.
Bit
Description
31:12
11:4
3
2:1
0
Base Address (MEM_ADDR) — R/W. This field contains the upper 20 bits of the base address
provides 4 KB of memory-Mapped space for the LAN controller’s Control/Status registers.
Reserved
Prefetchable (MEM_PF) — RO. Hardwired to 0 to indicate that this is not a pre-fetchable memory-
Mapped address range.
Type (MEM_TYPE) — RO. Hardwired to 00b to indicate the memory-Mapped address range may be
located anywhere in 32-bit address space.
Memory-Space Indicator (MEM_SPACE) — RO. Hardwired to 0 to indicate that this base address
maps to memory space.
8.1.12 CSR_IO_BASE — CSR I/O-Mapped Base Address Register
(LAN Controller—B1:D8:F0)
Offset Address: 14–17h
Default Value: 00000001h
Attribute:
Size:
R/W, RO
32 bits
Note: The ICH6’s integrated LAN controller requires one BAR for memory mapping. Software
determines which BAR (memory or I/O) is used to access the LAN controller’s CSR registers.
Bit
Description
31:16 Reserved
15:6
Base Address (IO_ADDR)— R/W. This field provides 64 bytes of I/O-Mapped address space for
the LAN controller’s Control/Status registers.
5:1 Reserved
0
I/O Space Indicator (IO_SPACE) — RO. Hardwired to 1 to indicate that this base address maps to
I/O space.
8.1.13
SVID — Subsystem Vendor Identification
(LAN Controller—B1:D8:F0)
Offset Address: 2C–2D
Default Value: 0000h
Attribute:
Size:
RO
16 bits
Bit
Description
15:0 Subsystem Vendor ID (SVID) — RO. See Section 8.1.14 for details.
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
287