Intel E3815 FH8065301567411 Data Sheet
Product codes
FH8065301567411
PCU – iLB – IO APIC
Intel
®
Atom™ Processor E3800 Product Family
5284
Datasheet
41
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, via 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, via 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.
41.1
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
UART
LP
C
GPI
O
O
RTC
HPET
82
59
59
API
C
C
82
54
54
SMB
iLB
SPI
PMC