EVAL-AD5932EB
The next steps in the wizard require you to enter the values for
the numeric registers: the start frequency (F START ), frequency
increments ( Δ f), number of increments (N INCR ), time interval
(T INT ), and burst interval (T BURST ). Figure 4 shows the first screen
of this wizard where F START , Δ f, and N INCR are entered. This can
be done by entering the hexadecimal value directly or by entering
the values in MHz (the software then calculates the corresponding
hexadecimal value). Click Next to enter T INT and T BURST .
The final screen (Figure 6) displays the required write sequence
in hexadecimal, which is calculated based on the responses of
the earlier questions. Now click Write to Part , which is the first
communication with the board. This write programs the AD5932
registers. However, it is necessary to click Pulse CTRL Pin in
order to start the frequency sweep.
Figure 6. Final Screen
Figure 4. Numeric Registers Values
The SYNC and MSB outputs are also available from the
AD5932 evaluation board. The MSB output can be enabled in
the first window of the wizard, while both options for the
SYNCOP are available, as shown in Figure 5.
Figure 5. SYNCOP Pin Options
Rev. 0 | Page 6 of 12
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