Kontron CP382 - Manual (Page 51)

CP382 Configuration
ID 24208, Rev. 01 © 2002 PEP Modular Computers GmbH Page 4 - 9
4.3.4 Generating Interrupts
A detected fail flag set in the register can trigger an interrupt.
1. Check if the board is the cause of the interrupt (General Interrupt Pending is set)
2. If yes, check the reason for the interrupt by reading the fail flag in the output status reg-
ister
3. Reset the corresponding Flag by writing a 1 to a set status bit (fail).
4. Reset the boards’ IRQ by resetting the General Interrupt Pending Bit by writing a 1 to that
status bit
5. Return from Interrupt
Note...
The board will continue issuing an interrupt until all interrupt sources are com-
pletely dealt with and no interrupt condition remains.
A set bit means that the boards’ interrupt is enabled.
Table 4-7: General Interrupt Enable Register, Bit Map
Bits Type Default Function
31 r/w 0 Board Interrupt Enable
29 - 0 r/w 0 Reserved
Table 4-8: General Interrupt Pending Register, Bit Map
Bits Type Default Function
31 r/w 0 Board Interrupt Pending
29 - 0 r/w 0 Reserved
Note...
A set bit means that the boards’ interrupt is pending. A board interrupt must be
cleared by writing a "1" to the corresponding output irqen event flag.
Table 4-9: Output Status Register, Bit Map
Bits Type Default Function
31 r 0 Fail
30 r 0 Diag
29 - 0 r 0 Reserved