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INTERRUPT CONTROLLER S3C2440A RISC MICROPROCESSOR
14-18
INTERRUPT SUB MASK (INTSUBMSK) REGISTER
This register has 11 bits each of which is related to an interrupt source. If a specific bit is set to 1, the interrupt
request from the corresponding interrupt source is not serviced by the CPU (note that even in such a case, the
corresponding bit of the SUBSRCPND register is set to 1). If the mask bit is 0, the interrupt request can be
serviced.
Register Address R/W Description Reset Value
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.
0xFFFF
INTSUBMSK Bit Description Initial State
Reserved [31:15] Not used 0
INT_AC97 [14] 0 = Service available, 1 = Masked 1
INT_WDT [13] 0 = Service available, 1 = Masked 1
INT_CAM_P [12] 0 = Service available, 1 = Masked 1
INT_CAM_C [11] 0 = Service available, 1 = Masked 1
INT_ADC_S [10] 0 = Service available, 1 = Masked 1
INT_TC [9] 0 = Service available, 1 = Masked 1
INT_ERR2 [8] 0 = Service available, 1 = Masked 1
INT_TXD2 [7] 0 = Service available, 1 = Masked 1
INT_RXD2 [6] 0 = Service available, 1 = Masked 1
INT_ERR1 [5] 0 = Service available, 1 = Masked 1
INT_TXD1 [4] 0 = Service available, 1 = Masked 1
INT_RXD1 [3] 0 = Service available, 1 = Masked 1
INT_ERR0 [2] 0 = Service available, 1 = Masked 1
INT_TXD0 [1] 0 = Service available, 1 = Masked 1
INT_RXD0 [0] 0 = Service available, 1 = Masked 1