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Preliminary
INTERRUPT CONTROLLER
S3C2451X RISC MICROPROCESSOR
10-14
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
INTERRUPT MASK (INTMSK) REGISTER
This register also has 32 bits each of which is related to an interrupt source. If a specific bit is set to 1, the CPU
does not service the interrupt request from the corresponding interrupt source (note that even in such a case, the
corresponding bit of SRCPND register is set to 1). If the mask bit is 0, the interrupt request can be serviced.
Register Address
R/W
Description
Reset
Value
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
INTMSK2
0X4A000048
R/W
Determine which interrupt source of group 2 is
masked. The masked interrupt source will not be
serviced.
0 = Interrupt service is available.
1 = Interrupt service is masked.
0xFFFFFFFF
INTMSK1 Bit
Description
Initial
State
INT_ADC
[31]
0 = Service available, 1 = Masked
1
INT_RTC
[30]
0 = Service available, 1 = Masked
1
INT_SPI1
[29]
0 = Service available, 1 = Masked
1
INT_UART0
[28]
0 = Service available, 1 = Masked
1
INT_IIC0
[27]
0 = Service available, 1 = Masked
1
INT_USBH
[26]
0 = Service available, 1 = Masked
1
INT_USBD
[25]
0 = Service available, 1 = Masked
1
INT_NAND
[24]
0 = Service available, 1 = Masked
1
INT_UART1
[23]
0 = Service available, 1 = Masked
1
INT_SPI0
[22]
0 = Service available, 1 = Masked
1
INT_SDI0
[21]
0 = Service available, 1 = Masked
1
INT_SDI1
[20]
0 = Service available, 1 = Masked
1
INT_CFCON
[19]
0 = Service available, 1 = Masked
1
INT_UART3
[18]
0 = Service available, 1 = Masked
1
INT_DMA
[17]
0 = Service available, 1 = Masked
1
INT_LCD
[16]
0 = Service available, 1 = Masked
1
INT_UART2
[15]
0 = Service available, 1 = Masked
1
INT_TIMER4
[14]
0 = Service available, 1 = Masked
1
INT_TIMER3
[13]
0 = Service available, 1 = Masked
1
INT_TIMER2
[12]
0 = Service available, 1 = Masked
1
INT_TIMER1
[11]
0 = Service available, 1 = Masked
1
INT_TIMER0
[10]
0 = Service available, 1 = Masked
1