82093AA Datasheet, PDF (4/20 Pages) Intel Corporation – I/O ADVANCED PROGRAMMABLE INTERRUPT CONTROLLER (IOAPIC)

82093AA (IOAPIC)
E
NMI
LINTIN1
LINTIN0
Processor
Local APIC
RESET
LINTIN0 LINTIN1 SMI#
Host-to-PCI
Bridge
API CACK 2#
PCI Bus
Processor
RESET
Local APIC
LINTIN0 LINTIN1 SMI#
SMI
RESET
APIC Bus
RESET
SMIOUT#
MIRQ[1:0]
PIIX3
CS#
APICREQ#
APICACK1#
INTIN23/SMI#
INTR
IRQ[1,2:7,8#,9:12,14,15]
I/O APIC Unit
INTIN[2,13,22]
MIRQ[1:0]
ISA Bus
Figure 2. I/O And Local APIC Units
APIC_SYS
4
PRELIMINARY