FW82801DBM S L6DN Intel, FW82801DBM S L6DN Datasheet - Page 347

• Manufacturer Part Number: FW82801DBM S L6DN
• Manufacturer: Intel

Specifications of FW82801DBM S L6DN

• Lead Free Status / RoHS Status: Not Compliant

9.5
9.5.1
Intel
®
Table 9-4. APIC Direct Registers
Table 9-5. APIC Indirect Registers
82801DBM ICH4-M Datasheet
Advanced Interrupt Controller (APIC)
APIC Register Map
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
registers are shown in
accessing these registers, accesses must be done a 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.
Table 9-5
3E
40
03
10
12–13h
FECO_0020h
FECO_0040h
FEC0_0000h
FEC0_0010h
Index
00h
01h
02h
03h
–
–
–
–
...
Address
0Fh
FFh
11h
3Fh
lists the registers which can be accessed within the APIC via the Index Register. When
ID
Version
Arbitration ID
Boot Configuration
Reserved
Redirection Table 0
Redirection Table 1
...
Redirection Table 23
Reserved
Index Register
Data Register
IRQ Pin Assertion Register
EOI Register
Table
9-4.
Register Name
Register Name
LPC Interface Bridge Registers (D31:F0)
32 bits
8 bits
8 bits
8 bits
32 bits
32 bits
32 bits
32 bits
64 bits
64 bits
64 bits
Size
Size
...
R/W, RO
R/W, RO
R/W, RO
Type
R/W
R/W
WO
WO
Type
R/W
R/W
RO
RO
RO
RO
...
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