| Specifications |
| Digital input/output |
| Digital type | 82C55 |
| Number of I/O | 24 (Port A0 through Port C7) |
| Configuration | 2 banks of 8 and 2 banks of 4 or
3 banks of 8 or
2 banks of 8 with handshake |
| Input low voltage | 0.8 V max |
| Input high voltage | 2.2 V min |
| Output low voltage | (IOL = 2.5 mA) 0.5 V max |
| Output high voltage | (IOH = -2.5 mA) 2.4 V min |
| Absolute maximum input voltage | -0.5 V, +6 V |
| Power-up / reset state | Input mode (high impedance) |
| Pull-up/pull-down resistors | Dual footprint allows pull-up or pull-down configuration. |
| Interrupts |
| Interrupts | INTA# - mapped to IRQn via PCI BIOS at boot-time |
| Interrupt enable | External (IRQ_ENABLE) active low, disabled by default through internal resistor to TTL high and programmable through PLX9030 |
| Interrupt sources | External source (IRQ_INPUT)
Polarity programmable through PLX9030
Edge or level triggered programmable through PLX9030
Assertion time: 40 ns min |
| Power consumption |
| +5 V operating | 240 mA typical, 350 mA max. Does not include power consumed through the I/O connector. |
| +5 V available at I/O connector | 300 mA max, protected with a resettable fuse |
| Resettable fuse | Raychem type miniSMDC110.
Hold current: 1.1 A max
Series resistance 0.21 Ohms max. |
| Environmental |
| Operating temperature range | 0 to 70°C |
| Storage temperature range | -40 to 100°C |
| Humidity | 0 to 95% non-condensing |
| Mechanical |
| Card dimensions | PCI length: 131.8 mm (L) x 106.7 mm (W) x 18.4 mm (H) |
| Form factor | Universal PCI keying. Compatible with either 3.3 V or 5 V PCI signaling environments. |
