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S3C2500B INTERRUPT CONTROLLER Table 16-2. S3C2500B External Interrupt Sources Index Values Interrupt Sources [6] IOM2 interrupt [5] External interrupt 5 [4] External interrupt 4 [3] External interrupt 3 [2] External interrupt 2 [1] External interrupt 1 [0] External interrupt 0 16.4 INTERRUPT CONTROLLER SPECIAL REGISTERS 16.4.1 INTERRUPT MODE REGISTERS Bit settings in the interrupt mode registers, INTMOD and EXTMOD, specify if an interrupt is to be serviced as a fast interrupt (FIQ) or a normal interrupt (IRQ). Table 16-3. INTMOD, EXTMOD Register Register Address R/W Description Reset Value INTMOD 0xF0140000 R/W Internal interrupt mode register 0x00000000 EXTMOD 0xF0140004 R/W External interrupt mode register 0x00000000 16-3
