Data Capture Board User’s Guide
Section I. Introduction
The CLC3790093 Data Capture Board enables simple evaluation
of National Semiconductor’s High Speed Analog to Digital Con-
verters (ADCs) and the Diversity Receiver Chip Set (DRCS). The
Data Capture Board interfaces the outputs of these devices to the
standard serial port available on the back of most Personal
Computers (PCs). We have provided PC software to control the
data capture function and Matlab® scripts for data analysis.
Table of Contents
II. Capturing Data from ADC
III. Capturing Data from the DRCS
IV. Data Analysis using Matlab
A block diagram of the evaluation test bed is shown below.
The Data Capture Board contains a ﬁeld-programmable gate
array (FPGA) that controls its operation. An EPROM conﬁgures
the FPGA after power is applied. The serial interface is provided
by a UART (Universal Asynchronous Receiver/Transmitter), an
oscillator, and a level translator IC. The captured data is stored in
either three 32K x 8 static RAMs (organized into 24-bit words) or
in a FIFO containing 32K 18-bit words. LEDs provide a visual
indication of activity. DIP switches and a jumper conﬁgure several
Section II. Capturing Data from ADC
To use the Data Capture board to capture data from a National
Semiconductor Analog to Digital converter, you will need the
following hardware, software, and documentation.
Evaluation Test Bed
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