Intel N2820 FH8065301616603 データシート
製品コード
FH8065301616603
PCU – iLB – IO APIC
1268
Datasheet
31
PCU – iLB – IO APIC
The IO Advanced Programmable Interrupt Controller (APIC) is used to support line
interrupts more flexibly than the 8259 PIC. Line interrupts are routed to it from
multiple sources, including legacy devices, using the interrupt decoder and serial IRQs,
or they are routed to it from the interrupt router in the iLB. These line based interrupts
are then used to generate interrupt messages targeting the local APIC in the processor.
interrupts more flexibly than the 8259 PIC. Line interrupts are routed to it from
multiple sources, including legacy devices, using the interrupt decoder and serial IRQs,
or they are routed to it from the interrupt router in the iLB. These line based interrupts
are then used to generate interrupt messages targeting the local APIC in the processor.
31.1
Features
•
87 interrupt lines
— IRQ0-86
•
Edge or level trigger mode per interrupt
•
Active low or high polarity per interrupt
•
Works with local APIC in processor via MSIs
•
MSIs can target specific processor core
•
Established APIC programming model
I
O
I
O
I
O
I
O
I
O
I
O
I
O
O
Platform Control Unit
UAR
T
LP
C
GPIO
RT
C
C
HP
ET
ET
82
59
59
APIC
82
54
54
SMB
iLB
SP
I
I
PMC