INTERRUPT CONTROLLER
S3C2416X RISC MICROPROCESSOR
10-8
2 INTERRUPT CONTROLLER SPECIAL REGISTERS
There are following control registers in the interrupt controller: source pending register, interrupt mode register,
mask register, priority register, interrupt pending register, interrupt offset register, sub-source pending register and
sub-mask register.
All the interrupt requests from the interrupt sources are first registered in the source pending register. They are
divided into two groups including Fast Interrupt Request (FIQ) and Interrupt Request (IRQ), based on the interrupt
mode register. The arbitration procedure for multiple IRQs is based on the priority register.
Overall Register Map
Register
Address
R/W
Description
Reset Value
SRCPND 1
0X4A000000 R/W Indicate the interrupt request status for group 1.
0 = The interrupt has not been requested.
1 = The interrupt source has asserted the interrupt
request.
0x00000000
INTMOD 1
0X4A000004 R/W Interrupt mode regiseter for group 1.
0 = IRQ mode
1 = FIQ mode
0x00000000
INTMSK1
0X4A000008 R/W Determine which interrupt source of group 1is
masked. The masked interrupt source will not be
serviced.
0 = Interrupt service is available.
1 = Interrupt service is masked.
0xFFFFFFFF
0X4A00000C
INTPND1
0X4A000010 R/W Indicate the interrupt request status for group 1.
0 = The interrupt has not been requested.
1 = The interrupt source has asserted the interrupt
request.
0x00000000
INTOFFSET1
0X4A000014
R Indicate the IRQ interrupt request source for group
1
0x00000000
SUBSRCPND 0X4A000018
R/W
Indicate
the interrupt request status.
0 = The interrupt has not been requested.
1 = The interrupt source has asserted the interrupt
request.
0x00000000
INTSUBMSK 0X4A00001C
R/W
Determine
which interrupt source is masked.
The masked interrupt source will not be serviced.
0 = Interrupt service is available.
1 = Interrupt service is masked.
0xFFFFFFFF
PRIORITY_MODE1 0x4A000030
R/W IRQ priority mode register
0x00000000
PRIORITY_
UPDATE1
0x4A000034 R/W IRQ priority update register
0x7F
SRCPND 2
0X4A000040 R/W Indicate the interrupt request status for group 2..
0 = The interrupt has not been requested.
1 = The interrupt source has asserted the interrupt
0x00000000
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 ...