1.3.5 Interrupt Channel
Interrupt: INTA (Automatically assigned by PCI-initiator).
Enable/Disable: Via PCI control register and add-on control register.
Interrupt source: (Selected by on-board control register)
1. A/D conversion interrupt.
2. Pacer 0 interrupt (Timer 0).
3. Pacer 1 interrupt (Timer 1).
4. External interrupt.
A/D busy
IRQ
End of Conversion
1.
Pacer 0
IRQ
Falling edge of Pacer 0
2.
Pacer 1
IRQ
Falling edge of Pacer 1
3.
External
Trigger
IRQ
Falling edge of
External trigger
4.
Figure 1-3: Programmable interrupt source.
1.3.6 Programmable Timer/Counter
Type: 82C54 -8 programmable timer/counter.
Timers: Timer 0 for Pacer triggers and interrupts.
Timer 1 for External trigger and interrupt.
Timer 2 for software machine independent timer.
PCI-1002 Series User Manual (Ver.2.8, Oct. 2011, PMH-015-28)
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