INTERRUPT CONTROLLER
S3C2416X RISC MICROPROCESSOR
10-12
2.2 INTERRUPT MODE (INTMOD) REGISTER
This register is composed of 32 bits each of which is related to an interrupt source. If a specific bit is set to 1, the
corresponding interrupt is processed in the FIQ (fast interrupt) mode. Otherwise, it is processed in the IRQ mode
(normal interrupt).
Note that only one interrupt source can be serviced in the FIQ mode in the interrupt controller (you should use the
FIQ mode only for the urgent interrupt). Thus, only one bit of INTMOD can be set to 1.
Register
Address
R/W
Description
Reset Value
INTMOD 1
0X4A000004
R/W
Interrupt mode regiseter for group 1.
0 = IRQ mode
1 = FIQ mode
0x00000000
INTMOD 2
0X4A000044
R/W
Interrupt mode regiseter for group 2.
0 = IRQ mode
1 = FIQ mode
0x00000000
NOTE:
If an interrupt mode is set to FIQ mode in the INTMOD register, FIQ interrupt will not affect both INTPND and
INTOFFSET registers. In this case, the two registers are valid only for IRQ mode interrupt source.
INTMOD1
Bit
Description
Initial State
INT_ADC
[31]
0 = IRQ, 1 = FIQ
0
INT_RTC
[30]
0 = IRQ, 1 = FIQ
0
Reserved
[29]
0 = IRQ, 1 = FIQ
0
INT_UART0
[28]
0 = IRQ, 1 = FIQ
0
INT_IIC0
[27]
0 = IRQ, 1 = FIQ
0
INT_USBH
[26]
0 = IRQ, 1 = FIQ
0
INT_USBD
[25]
0 = IRQ, 1 = FIQ
0
INT_NAND
[24]
0 = IRQ, 1 = FIQ
0
INT_UART1
[23]
0 = IRQ, 1 = FIQ
0
INT_SPI0
[22]
0 = IRQ, 1 = FIQ
0
INT_SDI0
[21]
0 = IRQ, 1 = FIQ
0
INT_SDI1
[20]
0 = IRQ, 1 = FIQ
0
Reserved
[19]
0 = IRQ, 1 = FIQ
0
INT_UART3
[18]
0 = IRQ, 1 = FIQ
0
INT_DMA
[17]
0 = IRQ, 1 = FIQ
0
INT_LCD
[16]
0 = IRQ, 1 = FIQ
0
INT_UART2
[15]
0 = IRQ, 1 = FIQ
0
INT_TIMER4
[14]
0 = IRQ, 1 = FIQ
0
INT_TIMER3
[13]
0 = IRQ, 1 = FIQ
0
INT_TIMER2
[12]
0 = IRQ, 1 = FIQ
0
INT_TIMER1
[11]
0 = IRQ, 1 = FIQ
0
INT_TIMER0
[10]
0 = IRQ, 1 = FIQ
0
Summary of Contents for S3C2416
Page 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Page 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Page 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Page 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Page 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Page 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Page 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Page 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Page 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Page 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Page 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...