Ravenmpic, Ravenmpic -3, Table 5-2. ravenmpic interrupt assignments -3 – Motorola MVME2300 Series User Manual
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Interrupt Handling
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5-3
5
RavenMPIC
The Raven ASIC has a built-in interrupt controller that meets the Multi-
Processor Interrupt Controller (MPIC) specification. This MPIC supports
up to two processors and 16 external interrupt sources. There are also six
other interrupt sources inside the MPIC: Two cross-processor interrupts
and four timer interrupts.
All ISA interrupts go through the 8259 pair in the PIB. The output of the
PIB then goes through the MPIC in the Raven. Refer to
for details on the RavenMPIC. The following table
shows the interrupt assignments for the RavenMPIC on MVME2300
series boards:
Table 5-2. RavenMPIC Interrupt Assignments
MPIC
IRQ
Edge/
Level
Polarity
Interrupt Source
Notes
IRQ0
Level
High
PIB (8259)
1
IRQ1
Edge
Low
Falcon-ECC Error
2
IRQ2
Level
Low
PCI-Ethernet
4
IRQ3
N/A
N/A
Not used
IRQ4
N/A
N/A
Not used
IRQ5
Level
Low
PCI-VME INT 0 (Universe LINT0#)
3, 4
IRQ6
Level
Low
PCI-VME INT 1 (Universe LINT1#)
3
IRQ7
Level
Low
PCI-VME INT 2 (Universe LINT2#)
3
IRQ8
Level
Low
PCI-VME INT 3 (Universe LINT3#)
3
IRQ9
Level
Low
PCI-PMC1 INTA#, PMC2 INTD#, PCIX INTA#
4
IRQ10
Level
Low
PCI-PMC1 INTB#, PMC2 INTA#, PCIX INTB#
IRQ11
Level
Low
PCI-PMC1 INTC#, PMC2 INTB#, PCIX INTC#
IRQ12
Level
Low
PCI-PMC1 INTD#, PMC2 INTC#, PCIX INTD#
IRQ13
Level
Low
LM/SIG Interrupt 0
4