National Instruments 6508 PCI-DIO-96 - Manual (Page 34)

Chapter 4 Theory of Operation
PCI-DIO-96 User Manual 4-2 © National Instruments Corporation
Figure 4-1. PCI-DIO-96 Block Diagram
PCI Interface Circuitry
The PCI-DIO-96 uses the MITE ASIC to communicate with the PCI
bus. The MITE ASIC was designed by National Instruments
specifically for data acquisition. The PCI-DIO-96 is fully compliant
with Local Bus Specification 2.0.
The base memory address and interrupt level for the board are stored
inside the MITE at power on. You do not need to set any switches or
jumpers.
I/O Connector
Interrupt
Control
Circuitry
Port A
Port B
Port C
Port A
Port B
Port C
Port A
Port B
Port C
Port A
Port B
Port C
8
8
8
8
8
8
8
8
8
8
8
8
MITE
PCI
Interface
Circuitry
Interrupt
1
Data
Bus
Interrupt
Bus
Interrupt
PCI
1 A Fuse
+5 VDC
System
2
Arbitration
2
Error Reporting
2
Interface Control
6
Data/Address
37
82C53
Timer
82C55A
PPI C
82C55A
PPI D
82C55A
PPI B
82C55A
PPI A