User Manual

EP7309/11/12 User’s Manual - DS508UM4 4-5

Interrupt Controller

Interrupt Listing

Table 4-4, Table 4-5,andTable 4-6 show the names and allocation of interrupts in the

EP73xx.

Table 4-4: Interrupt Allocation in the First Interrupt Register

Interrupt

Bit in INTMR1

and INTSR1

Name Comment

FIQ 0 EXTFIQ External fast interrupt input (nEXTFIQ pin)

FIQ 1 BLINT Battery low interrupt

FIQ 2 WEINT Tick Watchdog expired interrupt

FIQ 3 MCINT Media changed interrupt

IRQ 4 CSINT CODEC sound interrupt

IRQ 5 EINT1 External interrupt input 1 (nEINT[1] pin)

IRQ 6 EINT2 External interrupt input 2 (nEINT[2] pin)

IRQ 7 EINT3 External interrupt input 3 (EINT[3] pin)

IRQ 8 TC1OI TC1 underflow interrupt

IRQ 9 TC2OI TC2 underflow interrupt

IRQ 10 RTCMI RTC compare match interrupt

IRQ 11 TINT 64 Hz tick interrupt

IRQ 12 UTXINT1 Internal UART1 transmit FIFO empty interrupt

IRQ 13 URXINT1 Internal UART1 receive FIFO full interrupt

IRQ 14 UMSINT Internal UART1 modem status changed interrupt

IRQ 15 SSEOTI Synchronous serial interface 1 end of transfer interrupt

Table 4-5: Interrupt Allocation in the Second Interrupt Register

Interrupt

Bit in INTMR2 and

INTSR2

Name Comment

IRQ 0 KBDINT Key press interrupt

IRQ 1 SS2RX Master / slave SSI 16 bytes received

IRQ 2 SS2TX Master / slave SSI 16 bytes transmitted

IRQ 12 UTXINT2 UART2 transmit FIFO empty interrupt

IRQ 13 URXINT2 UART2 receive FIFO full interrupt

Table 4-6: Interrupt Allocation in the Third Interrupt Register

Interrupt

Bit in INTMR3 and

INTSR3

Name Comment

FIQ 0 DAIINT DAI interface interrupt