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Appendix
ET875 Series
User’s Manual
45
B.
Interrupt Request Lines (IRQ)
Peripheral devices use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on board.
Level
Function
IRQ 25
High Definition Audio Controller
IRQ 39
Intel SD Host Controller
IRQ 8
High precision event timer
IRQ 27
Intel(R) Serial IO I2C Host Controller - 5AAC
IRQ 4
Communications Port (COM1)
IRQ 3
Communications Port (COM2)
IRQ 10
Communications Port (COM3)
IRQ 11
Communications Port (COM4)
IRQ 4294967281
Intel(R) USB 3.0 eXtensible Host Controller -
1.0 (Microsoft)
IRQ 1
Standard PS/2 Keyboard
IRQ 12
PS/2 Compatible Mouse
IRQ 4294967293
Intel(R) I210 Gigabit Network Connection
IRQ 4294967292
Intel(R) I210 Gigabit Network Connection
IRQ 4294967291
Intel(R) I210 Gigabit Network Connection
IRQ 4294967290
Intel(R) I210 Gigabit Network Connection
IRQ 4294967289
Intel(R) I210 Gigabit Network Connection
IRQ 4294967288
Intel(R) I210 Gigabit Network Connection
IRQ 42
Intel SD Host Controller
IRQ 54 ~ IRQ 204
Microsoft ACPI-Compliant System
IRQ 256 ~ IRQ 511
Microsoft ACPI-Compliant System
IRQ 4294967287
Intel(R) I210 Gigabit Network Connection #2
IRQ 4294967286
Intel(R) I210 Gigabit Network Connection #2
IRQ 4294967285
Intel(R) I210 Gigabit Network Connection #2
IRQ 4294967284
Intel(R) I210 Gigabit Network Connection #2
IRQ 4294967283
Intel(R) I210 Gigabit Network Connection #2
IRQ 4294967282
Intel(R) I210 Gigabit Network Connection #2
IRQ 4294967280
Intel(R) Trusted Execution Engine Interface
Summary of Contents for ET875 Series
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Page 13: ...General Information ET875 Series User s Manual 5 1 1 6 Block Diagram...
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Page 42: ...34 ET875 Series User s Manual 4 5 Chipset Settings...