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Interrupts
The interrupt control registers function with the four 82C55 devices and the
82C54 counter timer to provide interrupt sources.
Interrupt
PCI Interrupt enable
Interrupt polarity
Interrupt sources
Crystal Oscillator
Oscillator type
Frequency
Frequency stability
Environmental
Operating temperature range
Storage temperature range
Humidity
Mechanical
Card dimensions
INTA# - mapped to IRQn via PCI BIOS at boot-time
Programmable through PLX9052 INTCSR
High or low level. Programmable through PLX9052
Rising / falling edge. Programmable through PLX-9052
1. 82C55 in Mode 1 or Mode 2 Interrupt configuration:
First Port C0
First Port C3
Second Port C0
Second Port C3
Third Port C0
Third Port C3
Fourth Port C0
Fourth Port C3
Note: Any interrupt source above can be individually
enabled.
2. 82C54 Counter
Counter 1 OUT
Counter 2 OUT
Note: Counters 1 and 2 interrupts are exclusive. Only
one counter can be enabled as an interrupt source at any
given time.
AT-cut crystal
16 MHz
±100 ppm
0 to 70°C
40 to 70°C
0 to 95% non-condensing
PCI short card: 136.0mm(L) x 100.6mm(W) x11.00mm(H)
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