User`s manual

STX88831 STX Evaluation Platform Module Series User’s Manual
Hardware Description
22
3.5 Interrupt Controller
The STX88831 Series is a 100% PC compatible control board. It
consists of 16 interrupt request lines, and four out of them can be
programmable. The mapping list of the 16 interrupt request lines is
shown as the following table.
IRQ Parity check error
IRQ0 System timer output
IRQ1 Standard 101/102 Key or Microsoft Natural PS/2
Keyboard
IRQ3 Communication Port (COM2)
IRQ4 Communication Port (COM1)
IRQ8 System CMOS/Real time clock
IRQ9 Microsoft ACPI Controller
IRQ11 Intel® 82801G (ICH7 Family) SMBus Controller
IRQ12 Microsoft PS/2 Mouse
IRQ13 Numeric data processor
IRQ14 Primary IDE Channel
IRQ16 Intel® 82801G (ICH7 Family) PCI Express Root
Port
IRQ16 Mobile Intel® 945 Express Chipset Family
IRQ16 Realtek PCIe FE Family Controller
IRQ17 Vinyl AC’97 codec Combo Driver (WDM)
IRQ19 Intel® 82801GBM/GHM (ICH7-M Family) Serial
ATA Storage Controller
IRQ23 Intel® 82801G (ICH7 Family) USB Universal Host
Controller
IRQ23 Intel® 82801G (ICH7 Family) USB2 Enhanced
Host Controller