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S3C2416X RISC MICROPROCESSOR
INTERRUPT CONTROLLER
10-1
9
INTERRUPT CONTROLLER
1 OVERVIEW
The interrupt controller in the S3C2416 receives the request from 53 interrupt sources. These interrupt sources
are provided by internal peripherals such as the DMA controller, the UART, IIC, and others. In these interrupt
sources, the UARTn and EINTn interrupts are 'OR'ed to the interrupt controller.
When receiving multiple interrupt requests from internal peripherals and external interrupt request pins, the
interrupt controller requests FIQ or IRQ interrupt of the ARM926EJ core after the arbitration procedure.
The arbitration procedure depends on the hardware priority logic and the result is written to the interrupt pending
register, which helps users notify which interrupt is generated out of various interrupt sources.
Request sources
(with sub -register)
Request sources
(without sub -register)
SRCPND
INTPND
IRQ
FIQ
SUBSRCPND
SUBMASK
MASK
MODE
Priority
Figure 9-1. Interrupt Process Diagram
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 ...