Motorola MVME2400 Series Wartungshandbuch Seite 293

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Interrupt Handling
http://www.mcg.mot.com/literature 5-3
5
Hawk MPIC
The Hawk 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 Hawk. Refer
to Chapter 2 for details on the MPIC. The following table shows the
interrupt assignments for the MPIC on the MVME2400 series:
Table 5-2. MPIC Interrupt Assignments
MPIC
IRQ
Edge/
Level
Polarity Interrupt Source Notes
IRQ0 Level High PIB (8259) 1
IRQ1 N/A N/A Not used
IRQ2 Level Low PCI-Ethernet 3
IRQ3 Level Low Hawk WDT1O_L (resistor population option)
IRQ4 Level Low Hawk WDT20_L (resistor population option)
IRQ5 Level Low PCI-VME INT 0 (Universe II LINT0#) 2,3
IRQ6 Level Low PCI-VME INT 1 (Universe II LINT1#) 2
IRQ7 Level Low PCI-VME INT 2 (Universe II LINT2#) 2
IRQ8 Level Low PCI-VME INT 3 (Universe II LINT3#) 2
IRQ9 Level Low PCI-PMC1 INTA#, PMC2 INTB#, PCIX INTA# 3
IRQ10 Level Low PCI-PMC1 INTB#, PMC2 INTC#, PCIX INTB#
IRQ11 Level Low PCI-PMC1 INTC#, PMC2 INTD#, PCIX INTC#
IRQ12 Level Low PCI-PMC1 INTD#, PMC2 INTA#, PCIX INTD#
IRQ13 Level Low LM/SIG Interrupt 0 3
IRQ14 Level Low LM/SIG Interrupt 1 3
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