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75
SOM-6868 User Manual
Appendix D
S
ystem
Assignments
D.2
DMA Channel Assignments
D.3
Interrupt Assignments
0A00-0A0F
Motherboard resources
0A10-0A1F
Motherboard resources
0D00-FFFF
PCI Express Root Complex
E000-EFFF
PCI Express standard Root Port
F000-F03F
Intel® HD Graphics
F040-F05F
Intel® Celeron®/Pentium® SM Bus Controller - 2292
F060-F07F
Standard SATA AHCI Controller
Table D.1: System I/O ports
Table D.2: DMA channel assignments
Channel
Function
3
Printer Port (LPT1)
Table D.3: Interrupt assignments
Interrupt#
Interrupt source
IRQ 0
System Timer
IRQ 3
Communications Port (COM2)
IRQ 4
Communications Port (COM1)
IRQ 6
Communications Port (COM4)
IRQ 10
Intel® Celeron®/Pentium® SM Bus Controller - 2292
IRQ 11
Communications Port (COM3)
IRQ 19
Standard SATA AHCI Controller
IRQ 22
High Definition Audio Controller
IRQ 47
Intel SD Host Controller
IRQ 48~50
Intel Serial IO GPIO Controller
IRQ 81~90
Microsoft ACPI-Compliant System
IRQ 91
Intel Serial IO GPIO Controller
IRQ 91~191
Microsoft ACPI-Compliant System
IRQ 256~511
Microsoft ACPI-Compliant System
IRQ 1024
Intel SD Host Controller
IRQ FFFFFFEF (-17)
Intel® I211 Gigabit Network Connection
IRQ FFFFFFF0 (-16)
Intel® I211 Gigabit Network Connection
IRQ FFFFFFF1 (-15)
Intel® I211 Gigabit Network Connection
IRQ FFFFFFF2 (-14)
Intel® I211 Gigabit Network Connection
IRQ FFFFFFF3 (-13)
Intel® I211 Gigabit Network Connection
IRQ FFFFFFF4 (-12)
Intel® I211 Gigabit Network Connection
IRQ FFFFFFF5 (-11)
Intel® Trusted Execution Engine Interface
IRQ FFFFFFF6 (-10)
Intel® USB 3.0 Host Controller Adaptation Driver
IRQ FFFFFFF7 (-9)
Intel® HD Graphics
IRQ FFFFFFF8 (-8)
PCI Express standard Downstream Switch Port
IRQ FFFFFFF9 (-7)
PCI Express standard Downstream Switch Port
IRQ FFFFFFFA (-6)
PCI Express standard Downstream Switch Port
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