NH82801HEM S LB9B Intel, NH82801HEM S LB9B Datasheet - Page 364
NH82801HEM S LB9B
Manufacturer Part Number
NH82801HEM S LB9B
Description
Manufacturer
Intel
Datasheet
1.NH82801HEM_S_LB9B.pdf
(890 pages)
Specifications of NH82801HEM S LB9B
Lead Free Status / RoHS Status
Compliant
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9.5
9.5.1
Table 108.
Table 109.
9.5.2
.
364
Advanced Programmable Interrupt Controller
(APIC)(D31:F0)
APIC Register Map (LPC I/F—D31:F0)
The APIC is accessed via an indirect addressing scheme. Two registers are visible by
software for manipulation of most of the APIC registers. These registers are mapped
into memory space. The address bits 15:12 of the address range are programmable
through bit 7:4 of OIC register (Chipset Configuration Register, offset 31FFh.) The
registers are shown in
APIC Direct Registers (LPC I/F—D31:F0)
Register. When accessing these registers, accesses must be done one dword at a time.
For example, software should never access byte 2 from the Data register before
accessing bytes 0 and 1. The hardware will not attempt to recover from a bad
programming model in this case.
APIC Indirect Registers (LPC I/F—D31:F0)
IND—Index Register (LPC I/F—D31:F0)
Memory Address FEC0_0000h
Default Value:
The Index Register will select which APIC indirect register to be manipulated by
software. The selector values for the indirect registers are listed in
will program this register to select the desired APIC internal register
Table 109
FECO_0040h
FEC0_0000h
FEC0_0010h
7:0
Bit
Address
Index
02–0F
10–11
12–13
3E–3F
40–FF
00
01
...
APIC Index — R/W. This is an 8-bit pointer into the I/O APIC register table.
lists the registers which can be accessed within the APIC via the Index
Mnemonic
REDIR_TBL23
REDIR_TBL0
REDIR_TBL1
Mnemonic
00h
EOIR
IND
DAT
VER
ID
...
—
—
Table
Index
Data
EOI
108.
Identification
Version
Reserved
Redirection Table 0
Redirection Table 1
...
Redirection Table 23
Reserved
Register Name
Register Name
Description
Attribute:
Size:
LPC Interface Bridge Registers (D31:F0)
R/W
8 bits
Intel
32 bits
32 bits
Table
8 bits
Size
®
32 bits
32 bits
64 bits
64 bits
64 bits
Size
ICH8 Family Datasheet
...
—
—
109. Software
R/W, RO
R/W, RO
R/W, RO
Type
R/W
R/W
WO
Type
R/W
RO
RO
RO
...
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