NH82801DB S L8DE Intel, NH82801DB S L8DE Datasheet - Page 116
NH82801DB S L8DE
Manufacturer Part Number
NH82801DB S L8DE
Description
Manufacturer
Intel
Datasheet
1.NH82801DB_S_L8DE.pdf
(587 pages)
Specifications of NH82801DB S L8DE
Lead Free Status / RoHS Status
Compliant
- Current page: 116 of 587
- Download datasheet (7Mb)
Functional Description
116
Table 5-20. EOI Message
EOI Message for Level Triggered Interrupts
EOI messages are used by local APICs to send an EOI cycle occurring for a level-triggered
interrupt to an I/O APIC. This message is needed so that the I/O APIC can differentiate between a
new interrupt on the interrupt line versus the same interrupt on the interrupt line. The target of the
EOI is given by the local APIC through the transmission of the priority vector (V7 through V0) of
the interrupt. Upon receiving this message, the I/O APIC resets the Remote IRR bit for that
interrupt. If the interrupt signal is still active after the IRR bit is reset, the I/O APIC will treat it as a
new interrupt.
Cycle
2–5
10
11
12
13
14
1
6
7
8
9
NOT(C1)
NOT(V7)
NOT(V5)
NOT(V3)
NOT(V1)
NOT(A1)
NOT(A)
ARBID
Bit 1
0
1
1
NOT(V6)
NOT(V4)
NOT(V2)
NOT(V0)
NOT(C0)
NOT(A1)
NOT(A)
Bit 0
0
1
1
1
EOI message
Arbitration ID
Interrupt vector bits V7 - V0 from redirection table
register
Check Sum from Cycles 6–9
Postamble
Status Cycle 0
Status Cycle 1
Idle
Intel
Comments
®
82801DB ICH4 Datasheet
Related parts for NH82801DB S L8DE
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Intel 82801DB I/O Controller Hub (ICH4), Pb-Free SLI
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Microprocessor: Intel Celeron M Processor 320 and Ultra Low Voltage Intel Celeron M Processor at 600MHz
Manufacturer:
Intel Corporation
Part Number:
Description:
Intel 82550 Fast Ethernet Multifunction PCI/CardBus Controller
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 120 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 120 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 64 Mbit. Access speed 150 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel StrataFlash memory 32 Mbit. Access speed 100 ns
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
DA28F640J5A-1505 Volt Intel StrataFlash Memory
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
5 Volt Intel StrataFlash?? Memory
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
5 Volt Intel StrataFlash?? Memory
Manufacturer:
Intel Corporation
Part Number:
Description:
Intel 6300ESB I/O Controller Hub
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel 82801FB I/O Controller Hub (ICH6)
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Intel Strataflash Memory28F128J3 28F640J3 28F320J3
Manufacturer:
Intel Corporation
Datasheet:
Part Number:
Description:
Controllers, Intel 430TX PCIset: 82439TX System Controller (MTXC)
Manufacturer:
Intel Corporation