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National Instruments Corporation 3-1 PCI-4451/4452 User Manual
3
Hardware Overview
This chapter presents an overview of the hardware functions on your
PCI-4451/4452 device. Figure 3-1 shows a block diagram of the digital
functions. Figure 3-2 shows a block diagram of the analog functions.
The two function blocks connect through the analog mezzanine bus.
Figure 3-1.
Digital Function Block Diagram
Direct Digital
Synthesis
Clock Generator
DAQ-STC
AI FIFO
MITE
PCI Controller
PCI Bus
AO FIFO
†
Parallel <-> Serial
Converter
FIFO and DMA
Control
General Control
Functions
Clock Control
RTSI Bus
Digital I/O Bus
Analog Mezzanine Bus (to Analog Section)
Analog Mezzanine Control
†
PCI-4451 only
User.book Page 1 Tuesday, April 14, 1998 10:20 AM