CDB5471 Datasheet, PDF (15/26 Pages) Cirrus Logic – Evaluation Board and Software

CDB5471
Figure 4. Start-Up Window
3.2.2 The Start-Up Window
When the software first executes, the user should
see the Start-Up Window appear on the user’s PC
monitor. This window is shown in Figure 4. From
this window, the user can navigate to three other
main windows: the Conversion Window, the Data
Collection Window, and CS5471 Pinout Diagram.
(The CS5451 Pinout Diagram is also included in a
fourth window.) To navigate to these windows, use
the mouse to click on the “Menu” item, which is lo-
cated towards the upper left corner of the Start-Up
Window. “Menu” is a pull-down menu which con-
tains four options. From this pull-down menu, the
user can select any of the three windows mentioned
above, and once this is done, the new window
should appear. A fourth option called “Exit”
should be selected when the user wants to terminate
execution of the evaluation board software pro-
gram.
If the user selects the “CS5471 Pinout Diagram”
option in the “Menu” pull-down, the software will
display a window which contains the pin diagram
of the CS5471. This pin diagram is included for the
user’s reference. Note that this window has no ac-
tual functionality.
The functionality of the Conversion Window and
the Data Collection Window is described next.
3.2.3 The Conversion Window
Refer to Figure 5. After the user presses on the
green-colored “START” button in this window, the
software will begin to collect data for both channels
of the CS5471. For each channel, a certain number
of instantaneous data samples from the CS5471 are
bundled together. The period over which each bun-
dle of samples is taken is called a “computation cy-
cle.” The user controls the number of
instantaneous data samples that will be taken (per
channel) during one computation cycle by adjust-
ing the number in the box labeled “Evaluation Soft-
ware Cycle Count:.” Note that the default value for
this is set to 4000. Thus during every computation
cycle, the PC software will acquire 4000 samples
DS480DB1
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