Premio-computer Apollo/Shadowhawk Manual do Utilizador descarregar pdf (Página 75)

Intel Desktop Board D845HV/D845WN Technical Product Specification

The ICH2 has eight programmable interrupt request (PIRQ) input signals. All PCI interrupt

sources either onboard or from a PCI add-in card connect to one of these PIRQ signals. Some PCI

interrupt sources are electrically tied together on the D845HV and D845WN boards and therefore

share the same interrupt. Table 17 shows an example of how the PIRQ signals are routed on the

D845HV and D845WN boards.

For example, using Table 17 as a reference, assume an add-in card using INTB is plugged into PCI

bus connector 3. In PCI bus connector 3, INTB is connected to PIRQB, which is already

connected to the SMBus. The add-in card in PCI bus connector 3 now shares interrupts with these

onboard interrupt sources.

Table 17. PCI Interrupt Routing Map

ICH2 PIRQ Signal Name

PCI Interrupt Source

PIRQF PIRQG PIRQH PIRQB Other

AGP connector INTB INTA to PIRQA

ICH2 USB controller #1 INTD to PIRQD

SMBus controller INTB

ICH2 USB controller INTC to PIRQH

ICH2 Audio / Modem INTB

ICH2 LAN INTA to PIRQE

PCI Bus Connector 1 INTA INTB INTC INTD

PCI Bus Connector 2 INTD INTA INTB INTC

PCI Bus Connector 3 INTC INTD INTA INTB

PCI Bus Connector 4

(Note)

INTB INTC INTD INTA

PCI Bus Connector 5

(Note)

INTA INTB INTC INTD

PCI Bus Connector 6

(Note)

INTB INTC INTD INTA

Note: D845WN board only.

✏

NOTE

The ICH2 can connect each PIRQ line internally to one of the IRQ signals (3, 4, 5, 6, 7, 9, 10, 11,

12, 14, and 15). Typically, a device that does not share a PIRQ line will have a unique interrupt.

However, in certain interrupt-constrained situations, it is possible for two or more of the PIRQ

lines to be connected to the same IRQ signal.

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 152 153

Sem comentários

Premio-computer Apollo/Shadowhawk Manual do Utilizador Página 75