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National Instruments Corporation 3-1 AT-MIO-16X User Manual
Chapter
3
Theory of Operation
This chapter contains a functional overview of the AT-MIO-16X
and explains the operation of each functional unit making up the
AT-MIO-16X.
Functional Overview
The block diagram in Figure 3-1 is a functional overview of the
AT-MIO-16X board.
Figure 3-1.
AT-MIO-16X Block Diagram
I/O Connector
Mux Mode
Selection
Switches
ADC
FIFO
PGIA
+
-
16-Bit
Sampling
A/D
Conversion
Analog
Muxes
Voltage
Ref
Ground
REF
3
Data Acquisition
Conversion Control
5-Channel
Counter/Timer
Digital
Output
Digital
Input
DAC0
DAC1
DAC
Timing
Control
RTSI Bus
RTSI Bus
Interface
DMA
Interface
Interrupt
Interface
PC I/O Channel
PC AT
Bus
Interface
Circuitry
ADC Interrupt
Timer Interrupt
Timing
Data/Control
Calibration
DACs
Calibration
DACs
4
DAC
FIFO
Serial ADC Data
Serial DAC Data
2