Adlink PCI-8554 Manuel d'utilisateur Page 12

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Introduction
Figure 1: Functional Block diagram
1.1 Features
The cPCI/PCI-8554/R Counter / Timer and digital I/O Card provides the
following advanced features:
Four 8254 chips provide twelve 16 bits down counters
Multi-configurations of counters / timers:
Flexible setting for each independent counter, the clock
source could be external, internal or cascaded. The gate
signal is external controlled or internal enabled.
Provide debounce function with flexible setting to prevent
from bounce phenomenon when using external clocks.
8 digital output channels
8 digital input channels
Dual interrupt sources
3 From output of counter #12, or
3 From external source.
100-pin SCSI-II female connector.
PCI-Bus
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