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ADM5120
Register Description
4.2
System and Interrupt Registers
4.2.1 Interrupt Control Register Map
Offset Address
name
Base + 00
IRQ_status
Base + 04
IRQ_raw_status
Base + 08
IRQ_enable
Base + 0c
IRQ_enable_clear
Base + 10
Reserved
Base + 14
INT_mode
Base + 18
FIQ_status
Base + 1c
IRQ_test_source
Base + 20
IRQ_source_sel
Base + 24
INT_level
Note
: Base = 0x1220_0000
4.2.2. Interrupt Request Source Description
Bit
Name
Description
[9]
Sw_int
Switch interrupt, refer to B+B0, B+B4
[8]
PCI 2
PCI INT2
[7]
PCI 1
PCI INT1
[6]
PCI 0
PCI INT0
[5]
Intx_1
Internal interrupt 1, refer to GPIO[4] is the source
[4]
Intx_0
Internal interrupt 0, refer to GPIO[2] is the source
[3]
USB
USB interrupt source
[2]
UART1
UART1 interrupt source
[1]
UART0
UART0 interrupt source
[0]
timer
Timer interrupt, refer to B+F0 and B+F4
Note
: Only support level sensitive interrupts.
The external interrupt level, active high or low can be programmed
4.2.3 IRQ_status, offset: 0x00
ADMtek Inc.
4-1
Bits
Type Name
Description
Initial value
9:0
RO
IRQ_status[7:0]
The status of the interrupt sources
after
masking.
1: the corresponding IRQ is active, and
generate the interrupt to MIPS
0
31:10 RO Reserved
0