FW82801DBM S L6DN Intel, FW82801DBM S L6DN Datasheet - Page 350

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

Specifications of FW82801DBM S L6DN

• Lead Free Status / RoHS Status: Not Compliant

LPC Interface Bridge Registers (D31:F0)
9.5.7
9.5.8
a
9.5.9
a
350
VER—Version Register
Index Offset:
Default Value:
Each I/O APIC contains a hardwired Version Register that identifies different implementation of
APIC and their versions. The maximum redirection entry information also is in this register, to let
software know how many interrupt are supported by this APIC.
ARBID—Arbitration ID Register
Index Offset:
Default Value:
This register contains the bus arbitration priority for the APIC. If APIC Clock is running, this
register is loaded whenever the APIC ID register is loaded. A rotating priority scheme is used for
APIC bus arbitration. The winner of the arbitration becomes the lowest priority agent and assumes
an arbitration ID of 0.
BOOT_CONFIG—Boot Configuration Register
Index Offset:
Default Value:
This register is used to control the interrupt delivery mechanism for the APIC.
31:24
23:16
14:8
Bit
7:0
31:28
27:24
15
23:0
31:1
Bit
Bit
0
Reserved
Maximum Redirection Entries — RO. This is the entry number (0 being the lowest entry) of the
highest entry in the redirection table. It is equal to the number of interrupt input pins minus one and
is in the range 0 through 239. In the ICH4 this field is hardwired to 17h to indicate 24 interrupts.
PRQ — RO. This bit is set to 1 to indicate that this version of the I/O APIC implements the IRQ
Assertion register and allows PCI devices to write to it to cause interrupts.
Reserved
Version — RO. This is a version number that identifies the implementation version.
Reserved
I/O APIC Identification — RO. This 4-bit field contains the I/O APIC Arbitration ID.
Reserved
Reserved
Delivery Type (DT) — R/W.
0 = Interrupt delivery mechanism is via the APIC serial bus (default).
1 = Interrupt delivery mechanism is a Processor System Bus message.
01h
00170002h
02h
00000000h
03h
00000000h
Description
Description
Description
Attribute:
Size:
Attribute:
Size:
Attribute:
Size:
Intel
®
82801DBM ICH4-M Datasheet
RO
32 bits
RO
32 bits
R/W
32 bits