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CPC309 Intel Atom D510-based SBC
Specification
3.7.3 Distribution of interrupt lines
Default interrupt requests are generated by devices, included into the module. The interrupt
sources are shown in the table below. StackPC, StackPC-PCI, PCI-104, PCIe/104, PCI/104-
Express extension modules may be used as alternative devices that form interrupt requests.
Table 3-17: Distribution of interrupt lines
Interrupt
Main purpose (default)
Alternative source
IRQ0
System timer
-
IRQ1
Keyboard
-
IRQ2
Interrupt 8259
-
IRQ3
COM2
IRQ3 line of extension module,
connected to LPC bus
IRQ4
COM1
IRQ3 line of extension module,
connected to LPC bus
IRQ5
Video/USB/Ethernet/PCI/PCIe
IRQ3 line of extension module,
connected to LPC bus
IRQ6
-
IRQ3 line of extension module,
connected to LPC bus
IRQ7
-
IRQ3 line of extension module,
connected to LPC bus
IRQ8
RTC
-
IRQ9
ACPI
IRQ3 line of extension module,
connected to LPC bus
IRQ10
USB/HD Audio/SATA/SMBus/PCI/PCIe
IRQ3 line of extension module,
connected to LPC bus
IRQ11
USB/PCI/PCIe
IRQ3 line of extension module,
connected to LPC bus
IRQ12
Mouse
-
IRQ13
Reserved for floating point unit
-
IRQ14
Compact Flash
-
IRQ15
-