Controlling the PGA450-Q1 Memory Spaces With the GUI
14
SLDU007C – March 2012 – Revised November 2015
Copyright © 2012–2015, Texas Instruments Incorporated
PGA450Q1EVM User’s Guide
8.7
FIFO/ECHO
8.7.1
FIFO
The PGA450-Q1 device has a FIFO RAM that contains the output of the digital data path. The contents of
the FIFO RAM can be displayed on the GUI and/or can be plotted in Excel.
The FIFO RAM is displayed in the form of a grid. The GUI grid contents can be updated either by clicking
on the READ ALL button or by clicking on the READ SELECTED button.
The FIFO RAM contents can be displayed on the GUI and plotted in Excel by clicking the
Read and Save
FIFO Data to File
button.
NOTE:
Note: Microsoft Office version 2007 or above is required for this function to work properly.
Figure 9. Echo Data Stored in FIFO RAM Plotted in Excel
8.7.2
EVAL Monitor
This tab graphs the output of the digital data path directly in the GUI. The 8051W microcontroller must be
in reset to use this tab.
8.7.2.1
No. of Loops
This option selects how many times the GUI will transmit a burst and plot the echo data.
8.7.2.2
Trigger
If "Auto" is displayed, the GUI will continue sending bursts and plotting the echo data until the "Loops
Complete" count matches the "No. of Loops." If "USER" is displayed, the GUI will stop and wait for the
user to press the green flashing "Trigger" button before continuing.
