FW82801EB Intel, FW82801EB Datasheet - Page 134

• Manufacturer Part Number: FW82801EB
• Manufacturer: Intel

Specifications of FW82801EB

• Lead Free Status / RoHS Status: Not Compliant

Functional Description
:
134
Table 49. Interrupt Message Address Format
Table 50. Interrupt Message Data Format
31:16
13:12
31:20
19:12
10:8
11:4
Bit
7:0
Bit
1:0
15
14
11
3
2
Will always be 0000h.
Trigger Mode: 1 = Level, 0 = Edge. Same as the corresponding bit in the I/O Redirection Table
for that interrupt.
Delivery Status: 1 = Assert, 0 = Deassert.
If using edge-triggered interrupts, then bit is always 1, since only the assertion is sent.
If using level-triggered interrupts, then this bit indicates the state of the interrupt input.
Will always be 00
Destination Mode: 1 = Logical. 0 = Physical. Same as the corresponding bit in the I/O
Redirection Table for that interrupt.
Delivery Mode: This is the same as the corresponding bits in the I/O Redirection Table for that
interrupt.
000 = Fixed 100 = NMI
001 = Lowest Priority 101 = INIT
010 = SMI/PMI 110 = Reserved
011 = Reserved 111 = ExtINT
Vector: This is the same as the corresponding bits in the I/O Redirection Table for that interrupt.
Will always be FEEh
Destination ID: This is the same as bits 63:56 of the I/O Redirection Table entry for the interrupt
associated with this message.
Extended Destination ID: This is the same as bits 55:48 of the I/O Redirection Table entry for the
interrupt associated with this message.
Redirection Hint: This bit is used by the processor host bridge to allow the interrupt message to
be redirected.
0 = The message will be delivered to the agent (processor) listed in bits 19:12.
1 = The message will be delivered to an agent with a lower interrupt priority This can be derived
The Redirection Hint bit will be a 1 if bits 10:8 in the delivery mode field associated with
corresponding interrupt are encoded as 001 (Lowest Priority). Otherwise, the Redirection Hint bit
will be 0
Destination Mode: This bit is used only the Redirection Hint bit is set to 1. If the Redirection Hint
bit and the Destination Mode bit are both set to 1, then the logical destination mode is used, and
the redirection is limited only to those processors that are part of the logical group as based on the
logical ID.
Will always be 00.
from bits 10:8 in the Data Field (see below).
Intel
Description
Description
®
82801EB ICH5 / 82801ER ICH5R Datasheet