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ZEUS Technical Manual Detailed hardware description
© 2007 Eurotech Ltd Issue D 28
Interrupt assignments
Internal interrupts
For details on the PXA270 interrupt controller and internal peripheral interrupts please
see the Intel PXA27x Processor Family Developer’s Manual on the Development Kit
CD.
External interrupts
The following table lists the PXA270 signal pins used for external interrupts:
PXA270 Pin Signal name Peripheral Wake-up Active
GPIO0 AC97_IRQ
Audio
3
GPIO1 GPIO_IRQ#
External GPIO
3
GPIO9 UART_INTA
UART 1
3
GPIO10 UART_INTB
UART 2
3
GPIO11 UART_INTD
UART 4
3
GPIO12 UART_INTC
UART 3
3
GPIO13 USER_LINK1
User defined
3 User defined
GPIO14 ETH0_IRQ#
Ethernet 0
3
GPIO17 ISA_IRQ
PC/104
3
GPIO20 ISA_RST#
PC/104
GPIO35 CF_CD#
CompactFlash
3
GPIO53 MMC_CD
SDIO
3
GPIO88 USB_OC1#
USB1
GPIO91 USER_LINK2
User defined
3 User defined
GPIO96 OVERTEMP Temperature sensor
GPIO99 CF_RDY CompactFlash Ready = Busy =
GPIO102 USER_LINK2
User defined
3 User defined
GPIO113 ETH1_IRQ#
Ethernet 1
3
GPIO114 USB_OC2#
USB2
GPIO115 IG_FAIL#
PSU (10-30V)
GPIO116 CAN_IRQ#
CAN Bus
3