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82801CA Datasheet, PDF (295/521 Pages) Intel Corporation – I/O Controller Hub 3-S (ICH3-S) | |||
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LPC I/F Bridge Registers (D31:F0)
9.1.32
9.1.33
GEN2_DECâLPC I/F Generic Decode Range 2 Register
(LPC I/FâD31:F0)
Offset Address:
Default Value:
Lockable:
EChâEDh
00h
Yes
Attribute:
Size:
Power Well:
R/W
16-bit
Core
Bit
Description
Generic I/O Decode Range 2 Base Address (GEN2_BASE)âR/W. This address is aligned on a
64-byte boundary, and must have address lines 31:16 as 0.
15:4
Note that this generic decode is for I/O addresses only, not memory addresses. The size of this
range is 16 bytes.
3:1 Reserved. Read as 0.
Generic I/O Decode Range 2 Enable (GEN2_EN)âR/W.
0 0 = Disable.
1 = Accesses to the GEN2 I/O range will be forwarded to the LPC I/F.
FWH_SEL2âFWH Select 2 Register (LPC I/FâD31:F0)
Offset Address: EEhâEFh
Default Value: 4567h
Attribute:
Size:
R/W
32 bits
Bit
Description
15:12
11:8
7:4
3:0
FWH_70_IDSELâR/W. IDSEL for two 1M FWH memory ranges.
The IDSEL programmed in this field addresses the following memory ranges:
FF70 0000hâFF7F FFFFh
FF30 0000hâFF3F FFFFh
FWH_60_IDSELâR/W. IDSEL for two 1M FWH memory ranges.
The IDSEL programmed in this field addresses the following memory ranges:
FF60 0000hâFF6F FFFFh
FF20 0000hâFF2F FFFFh
FWH_50_IDSELâR/W. IDSEL for two 1M FWH memory ranges.
The IDSEL programmed in this field addresses the following memory ranges:
FF50 0000hâFF5F FFFFh
FF10 0000hâFF1F FFFFh
FWH_40_IDSELâR/W. IDSEL for two 1M FWH memory ranges.
The IDSEL programmed in this field addresses the following memory ranges:
FF40 0000hâFF4F FFFFh
FF00 0000hâFF0F FFFFh
Intel® 82801CA ICH3-S Datasheet
295
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